Infectious Disease Nursing

Infectious diseases are disorders caused by pathogenic microorganisms including bacteria, viruses, fungi, parasites, and prions that invade the body, disrupt normal physiologic function, trigger inflammatory and immune responses, and may spread through direct contact, droplets, airborne transmission, contaminated food/water, vectors, blood exposure, or vertical transmission. The severity of infection depends on pathogen virulence, portal of entry, immune status, vaccination history, environmental exposure, nutritional status, comorbid conditions, and timeliness of diagnosis and treatment. Effective infectious disease management requires understanding the chain of infection, standard and transmission-based precautions, isolation protocols, vaccination schedules, epidemiology, pathophysiology, diagnostics, antimicrobial therapy, supportive care, outbreak prevention, and public-health interventions. Nurses play a major role in infection prevention and control, early recognition of sepsis and complications, specimen collection, medication administration, surveillance, health teaching, vaccination promotion, isolation implementation, community education, and interdisciplinary collaboration to reduce morbidity, mortality, transmission, and emerging infectious threats locally and globally.

1️⃣ 🦠 Infection Prevention and Control

🧬 Core Concepts & Risk Factors

🔷 Pathogen enters host, multiplies, damages tissues

🔷 High-risk: elderly, infants, pregnant, immunocompromised

🔷 Devices ↑ risk, IV line / Foley / ventilator

🔷 Open wounds, burns, surgery = entry portals

🔷 Poor hygiene, crowding, unsafe water ↑ spread

🔷 Antibiotic misuse → resistance, MDRO risk

🔎 Assessment & Diagnostics

🔷 Fever ≥38°C, chills, malaise, body weakness

🔷 WBC normal 4,500–11,000/mm³, ↑ suggests infection

🔷 Neutrophils ↑ bacterial, lymphocytes ↑ viral pattern

🔷 CRP ↑, ESR ↑ = inflammation markers

🔷 Blood culture x2 before antibiotics if septic

🔷 Lactate >2 mmol/L suggests hypoperfusion / sepsis

💊 Prevention / Medical Management

🔷 Hand hygiene, soap-water or alcohol rub

🔷 Antibiotics: culture-guided, correct dose + duration

🔷 Antisepsis before invasive procedures

🔷 Disinfection for surfaces, sterilization for instruments

🔷 Vaccination reduces outbreak severity + mortality

🔷 Source control, drain abscess / remove infected line

🩺 Nursing & Collaborative Management

🔷 Standard precautions for all patients always

🔷 Apply isolation based on transmission route

🔷 Monitor vitals, drainage, labs, mental status

🔷 Teach cough etiquette, hygiene, wound care

🔷 Report notifiable diseases promptly

🔷 Coordinate infection-control team during outbreaks

2️⃣ 🦠 Chain of Infection

🧬 Core Concepts & Risk Factors

🔷 Agent = bacteria, virus, fungi, parasite

🔷 Reservoir = human, animal, water, soil

🔷 Portal exit = blood, sputum, feces, wounds

🔷 Transmission = contact, droplet, airborne, vector

🔷 Portal entry = mucosa, skin break, airway

🔷 Susceptible host = low immunity / unvaccinated

🔎 Assessment & Diagnostics

🔷 Ask exposure, travel, food, water, animal contact

🔷 Identify symptoms by likely transmission pattern

🔷 Culture source: blood, urine, sputum, stool, wound

🔷 PCR detects viral / bacterial genetic material

🔷 Serology IgM = acute, IgG = past/immunity

🔷 Contact tracing identifies exposed high-risk persons

💊 Prevention / Medical Management

🔷 Agent control, antimicrobials when indicated

🔷 Reservoir control, sanitation + disinfection

🔷 Exit control, masks / dressings / hygiene

🔷 Transmission control, PPE + isolation

🔷 Entry control, aseptic technique + skin care

🔷 Host protection, vaccines + nutrition + prophylaxis

🩺 Nursing & Collaborative Management

🔷 Break chain at multiple points

🔷 Teach patient how infection spreads

🔷 Screen contacts when disease requires

🔷 Document isolation start and discontinuation

🔷 Monitor healthcare-associated infection trends

🔷 Collaborate public health for community spread

3️⃣ 🧤 Types of Isolation

🧬 Core Concepts & Risk Factors

🔷 Standard precautions = every patient, every encounter

🔷 Contact = direct touch / contaminated surfaces

🔷 Droplet = large respiratory particles, close range

🔷 Airborne = tiny particles, remain suspended

🔷 Protective = shields severely immunocompromised patient

🔷 Aerosol procedures ↑ risk, intubation / suctioning

🔎 Assessment & Indications

🔷 Contact: diarrhea, draining wounds, MDRO, scabies

🔷 Droplet: pertussis, diphtheria, meningitis, influenza

🔷 Airborne: TB, measles, varicella, disseminated zoster

🔷 Protective: ANC <500/mm³, transplant, chemotherapy

🔷 Negative pressure room for airborne diseases

🔷 Private room preferred for contagious infections

💊 Prevention / Equipment

🔷 Contact: gloves + gown before room entry

🔷 Droplet: surgical mask within close contact

🔷 Airborne: fit-tested N95 / respirator required

🔷 Eye shield if splash / spray risk

🔷 Dedicated BP cuff, stethoscope if possible

🔷 Proper signage outside patient room

🩺 Nursing & Collaborative Management

🔷 Explain isolation, reduce fear / stigma

🔷 Cluster care, limit unnecessary exposure

🔷 Teach visitors PPE use + hand hygiene

🔷 Remove PPE safely, avoid self-contamination

🔷 Maintain patient dignity and communication

🔷 Coordinate room cleaning after discharge

4️⃣ 🧤 PPE / Personal Protective Equipment

🧬 Core Concepts & Risk Factors

🔷 PPE = barrier against blood, droplets, aerosols

🔷 Gloves ≠ substitute for hand hygiene

🔷 Wrong doffing ↑ contamination risk

🔷 N95 requires seal check each use

🔷 Gown protects uniform / exposed skin

🔷 Eye protection prevents mucosal exposure

🔎 Assessment & Selection

🔷 Blood/body fluids → gloves + gown

🔷 Splash risk → mask + goggles / face shield

🔷 Airborne risk → N95 / respirator

🔷 Contact isolation → gloves + gown

🔷 Droplet isolation → surgical mask

🔷 Aerosol procedure → N95 + eye protection

💊 Prevention / Correct Use

🔷 Donning: gown, mask, goggles, gloves

🔷 Doffing: gloves, goggles, gown, mask

🔷 Hand hygiene before and after PPE

🔷 Replace torn / wet / contaminated PPE

🔷 Dispose PPE in infectious waste if indicated

🔷 Never reuse single-use PPE improperly

🩺 Nursing & Collaborative Management

🔷 Check PPE availability before care

🔷 Teach visitors correct PPE sequence

🔷 Monitor staff compliance discreetly

🔷 Report PPE breach immediately

🔷 Document exposure incidents accurately

🔷 Coordinate occupational health if exposed

5️⃣ 💉 Vaccinations

🧬 Core Concepts & Risk Factors

🔷 Vaccines stimulate active immunity

🔷 Live vaccines avoided in severe immunosuppression

🔷 Inactivated vaccines safer for immunocompromised patients

🔷 Herd immunity protects vulnerable populations

🔷 Missed doses ↑ outbreak susceptibility

🔷 Cold-chain failure ↓ vaccine effectiveness

🔎 Assessment Before Vaccination

🔷 Check age, pregnancy, allergy, immune status

🔷 Ask previous severe reaction / anaphylaxis

🔷 Review vaccine card / immunization registry

🔷 Fever mild illness usually not contraindication

🔷 Screen immunocompromised before live vaccines

🔷 Observe 15–30 min after injection

💊 Key Vaccines & Timing

🔷 BCG: at birth, TB protection, PH EPI

🔷 Hepatitis B: birth dose within 24 hours

🔷 DTaP/Penta: 6, 10, 14 weeks infant series

🔷 MMR: 9 months + 12 months / per program

🔷 Varicella: 12–15 months, booster 4–6 years

🔷 Tdap: adolescent/adult booster, pregnancy each pregnancy

🩺 Nursing & Collaborative Management

🔷 Educate mild fever, soreness, fatigue expected

🔷 Teach return schedule, complete series required

🔷 Document vaccine name, lot, site, date

🔷 Report severe adverse events promptly

🔷 Address hesitancy using respectful counseling

🔷 Coordinate catch-up vaccination if delayed

6️⃣ 🦠 Measles / Rubeola

🧬 Pathophysiology & Risk Factors

🔷 Paramyxovirus, airborne transmission, highly contagious R₀ ↑

🔷 Virus replicates nasopharynx → lymphatics → viremia

🔷 Unvaccinated children highest risk population

🔷 Vitamin A deficiency ↑ severe complications

🔷 Crowded schools / evacuation centers ↑ outbreaks

🔷 Incubation ~7–14 days before rash appears

🔎 Clinical Manifestations & Diagnostics

🔷 3 C’s = cough, coryza, conjunctivitis

🔷 Koplik spots = bluish-white buccal lesions pathognomonic

🔷 Fever often >40°C before rash eruption

🔷 Maculopapular rash starts face → downward spread

🔷 CBC: leukopenia common viral pattern

🔷 Measles IgM / PCR confirms diagnosis

💊 Medical / Preventive Management

🔷 Supportive care, hydration, rest, nutrition

🔷 Vitamin A supplementation reduces mortality risk

🔷 Acetaminophen for fever control, avoid aspirin

🔷 Ribavirin rare severe immunocompromised cases

🔷 MMR vaccine: 9 months + booster 12 months

🔷 Post-exposure MMR within 72 hrs may help

🩺 Nursing & Collaborative Management

🔷 Airborne precautions, negative-pressure room if available

🔷 N95 respirator required during care

🔷 Monitor pneumonia, encephalitis, otitis complications

🔷 Encourage oral fluids, monitor dehydration signs

🔷 Isolate until 4 days after rash onset

🔷 Report immediately to infection-control/public health

7️⃣ 🦠 German Measles / Rubella

🧬 Pathophysiology & Risk Factors

🔷 Rubella virus, droplet transmission respiratory route

🔷 Mild childhood illness but teratogenic in pregnancy

🔷 Virus crosses placenta during maternal viremia

🔷 Congenital rubella syndrome risk ↑ 1st trimester

🔷 Unvaccinated adolescents/adults susceptible

🔷 Incubation ~14–21 days

🔎 Clinical Manifestations & Diagnostics

🔷 Low-grade fever + mild URI symptoms

🔷 Pink maculopapular rash face → trunk spread

🔷 Postauricular + occipital lymphadenopathy hallmark

🔷 Forchheimer spots = petechiae soft palate

🔷 Rubella IgM positive acute infection

🔷 Congenital cases: cataracts, PDA, hearing loss

💊 Medical / Preventive Management

🔷 Supportive treatment only, no specific antiviral

🔷 Acetaminophen for fever/discomfort

🔷 MMR vaccine primary prevention strategy

🔷 Avoid pregnancy ≥1 month after live vaccine

🔷 Pregnant exposure requires immediate OB referral

🔷 Isolation during infectious phase

🩺 Nursing & Collaborative Management

🔷 Droplet precautions for 7 days after rash

🔷 Screen pregnancy status in exposed contacts

🔷 Educate congenital fetal complication risks

🔷 Encourage MMR vaccination before conception

🔷 Monitor hydration and fever progression

🔷 Coordinate public health reporting during outbreaks

8️⃣ 🦠 Chickenpox / Varicella

🧬 Pathophysiology & Risk Factors

🔷 Varicella-zoster virus, airborne + contact spread

🔷 Primary infection → latent dorsal root ganglia

🔷 Unvaccinated children/adults highest susceptibility

🔷 Immunocompromised risk severe disseminated disease

🔷 Pregnancy infection ↑ fetal complications

🔷 Incubation ~10–21 days after exposure

🔎 Clinical Manifestations & Diagnostics

🔷 Vesicles in different stages simultaneously

🔷 “Dew drop on rose petal” lesions

🔷 Rash starts trunk → face/extremities spread

🔷 Fever malaise precede vesicular eruption

🔷 Secondary bacterial skin infection possible

🔷 PCR from lesion fluid confirms diagnosis

💊 Medical / Preventive Management

🔷 Acyclovir for severe/high-risk patients

🔷 Antihistamines reduce intense pruritus

🔷 Acetaminophen for fever, avoid aspirin

🔷 Calamine lotion / oatmeal bath comfort measures

🔷 Varicella vaccine: 12–15 mos + 4–6 yrs

🔷 VZIG post-exposure high-risk immunocompromised cases

🩺 Nursing & Collaborative Management

🔷 Airborne + contact precautions implemented

🔷 Isolate until all lesions crusted over

🔷 Trim nails, prevent scratching/scarring

🔷 Monitor encephalitis, pneumonia complications

🔷 Encourage hydration and skin hygiene

🔷 Avoid exposing pregnant/immunocompromised individuals

9️⃣ 🦠 Tetanus

🧬 Pathophysiology & Risk Factors

🔷 Clostridium tetani spores enter contaminated wounds

🔷 Anaerobic wounds promote toxin production

🔷 Tetanospasmin blocks inhibitory neurotransmitters GABA/glycine

🔷 Muscle rigidity + autonomic instability develop

🔷 Puncture wounds, burns, crush injuries high-risk

🔷 Incomplete vaccination major predisposing factor

🔎 Clinical Manifestations & Diagnostics

🔷 Trismus / lockjaw earliest classic manifestation

🔷 Risus sardonicus = grimacing facial spasm

🔷 Opisthotonos = severe back arching rigidity

🔷 Painful generalized spasms triggered by stimuli

🔷 Dysphagia, laryngospasm, respiratory compromise possible

🔷 Diagnosis clinical, no definitive rapid lab test

💊 Medical / Preventive Management

🔷 Human tetanus immune globulin neutralizes toxin

🔷 Metronidazole treats bacterial source infection

🔷 Diazepam/midazolam reduces spasms + agitation

🔷 Mechanical ventilation severe respiratory compromise

🔷 Wound debridement removes necrotic tissue

🔷 Tdap booster every 10 years recommended

🩺 Nursing & Collaborative Management

🔷 Maintain dark quiet low-stimulation environment

🔷 Airway equipment always readily available

🔷 Monitor BP/HR autonomic instability changes

🔷 Implement seizure/spasm precautions immediately

🔷 Monitor oxygenation and respiratory fatigue

🔷 Educate wound care + immunization importance

🔟 🦠 Meningitis

🧬 Pathophysiology & Risk Factors

🔷 Inflammation meninges surrounding brain/spinal cord

🔷 Bacterial causes more severe than viral forms

🔷 Neisseria meningitidis spread via respiratory droplets

🔷 Crowded dormitories ↑ meningococcal transmission risk

🔷 Skull fracture / CSF leak predisposes infection

🔷 Immunocompromised patients higher mortality risk

🔎 Clinical Manifestations & Diagnostics

🔷 Fever, headache, neck stiffness classic triad

🔷 Positive Kernig’s + Brudzinski’s signs

🔷 Photophobia, nausea, vomiting common findings

🔷 Altered LOC suggests ↑ ICP/severe disease

🔷 CSF bacterial: ↑ protein, ↓ glucose, ↑ neutrophils

🔷 CT brain before LP if ↑ICP suspected

💊 Medical / Preventive Management

🔷 Ceftriaxone + vancomycin empiric antibiotics initially

🔷 Dexamethasone ↓ cerebral inflammation complications

🔷 Acyclovir if HSV encephalitis concern present

🔷 Rifampicin/ciprofloxacin prophylaxis close contacts

🔷 Meningococcal vaccine recommended adolescents/high-risk groups

🔷 IV fluids + vasopressors if septic shock

🩺 Nursing & Collaborative Management

🔷 Droplet precautions first 24 hrs antibiotics

🔷 Frequent neuro checks + GCS monitoring

🔷 Seizure precautions implemented immediately

🔷 Monitor ICP signs, unequal pupils, bradycardia

🔷 Reduce environmental stimuli, dim quiet room

🔷 Monitor for septic shock/DIC progression

1️⃣1️⃣ 🦠 Diphtheria

🧬 Pathophysiology & Risk Factors

🔷 Corynebacterium diphtheriae toxin damages respiratory mucosa

🔷 Droplet/contact spread, unvaccinated children highest risk

🔷 Toxin may cause myocarditis + neuritis

🔷 Crowding, poor immunization ↑ outbreak probability

🔷 Incubation usually 2–5 days after exposure

🔷 Airway obstruction risk from thick pseudomembrane

🔎 Clinical Manifestations & Diagnostics

🔷 Thick gray pseudomembrane throat = pathognomonic

🔷 Bull neck swelling suggests severe toxin effect

🔷 Sore throat, low fever, malaise early

🔷 Hoarseness, stridor, dysphagia indicate obstruction

🔷 Throat culture confirms Corynebacterium diphtheriae

🔷 ECG monitoring needed, myocarditis possible

💊 Medical / Preventive Management

🔷 Diphtheria antitoxin neutralizes circulating toxin

🔷 Erythromycin or penicillin G eradicates organism

🔷 Airway support, intubation/tracheostomy if obstruction

🔷 DTaP: 6, 10, 14 weeks primary series

🔷 Tdap booster adolescence/adulthood, then Td/Tdap q10 yrs

🔷 Treat close contacts + update immunization

🩺 Nursing & Collaborative Management

🔷 Droplet precautions until cultures negative

🔷 Do not scrape pseudomembrane, bleeding/obstruction risk

🔷 Monitor airway, stridor, oxygen saturation closely

🔷 Continuous ECG, assess myocarditis warning signs

🔷 Maintain bed rest during acute toxic phase

🔷 Notify public health, trace household contacts

1️⃣2️⃣ 🦠 Pertussis

🧬 Pathophysiology & Risk Factors

🔷 Bordetella pertussis damages ciliated respiratory epithelium

🔷 Droplet spread, infants highest mortality risk

🔷 Toxin causes mucus retention + coughing paroxysms

🔷 Incomplete DTaP/Tdap vaccination ↑ susceptibility

🔷 Incubation usually 5–10 days

🔷 Adults may transmit with mild chronic cough

🔎 Clinical Manifestations & Diagnostics

🔷 Paroxysmal cough + inspiratory whoop hallmark

🔷 Post-tussive vomiting common after coughing fits

🔷 Apnea may replace whoop in infants

🔷 Catarrhal stage resembles mild URI

🔷 CBC may show lymphocytosis ↑

🔷 Nasopharyngeal PCR/culture confirms diagnosis

💊 Medical / Preventive Management

🔷 Azithromycin first-line antibiotic therapy

🔷 Clarithromycin or erythromycin alternatives

🔷 Supportive oxygen, suction, hydration for infants

🔷 DTaP: 6, 10, 14 weeks primary series

🔷 Tdap: adolescence + every pregnancy 27–36 weeks

🔷 Macrolide prophylaxis for close contacts

🩺 Nursing & Collaborative Management

🔷 Droplet precautions until 5 days antibiotics

🔷 Monitor apnea, cyanosis, feeding intolerance infants

🔷 Keep airway clear, suction PRN

🔷 Provide small frequent feeds, prevent exhaustion

🔷 Educate family prolonged cough may persist weeks

🔷 Report cases, assist contact tracing

1️⃣3️⃣ 🦠 Pulmonary Tuberculosis (PTB)

🧬 Pathophysiology & Risk Factors

🔷 Mycobacterium tuberculosis, acid-fast aerobic bacillus

🔷 Airborne droplet nuclei transmission, prolonged exposure risk

🔷 Bacilli lodge alveoli → granuloma/tubercle formation

🔷 Latent TB may reactivate if immunity ↓

🔷 HIV, diabetes, malnutrition, smoking ↑ susceptibility

🔷 Overcrowding, poor ventilation ↑ transmission risk

🔎 Clinical Manifestations & Diagnostics

🔷 Cough >2 weeks, hemoptysis, night sweats

🔷 Weight loss, fatigue, low-grade afternoon fever

🔷 Chest x-ray: upper-lobe infiltrates/cavitary lesions

🔷 Sputum AFB smear ×3 early morning samples

🔷 GeneXpert/NAAT detects TB + rifampicin resistance

🔷 TST ≥10 mm positive high-risk individuals

💊 Medical / Preventive Management

🔷 RIPE: rifampicin, isoniazid, pyrazinamide, ethambutol

🔷 Pyridoxine (vit B6) prevents INH neuropathy

🔷 Intensive phase 2 mos → continuation phase 4 mos

🔷 Monitor AST/ALT, jaundice, optic neuritis signs

🔷 DOTS improves adherence + prevents resistance

🔷 BCG vaccine at birth per EPI

🩺 Nursing & Collaborative Management

🔷 Airborne isolation, N95 respirator required

🔷 Negative-pressure room if available

🔷 Teach cough etiquette + proper sputum disposal

🔷 Monitor medication adherence + adverse effects

🔷 Encourage nutrition high-protein high-calorie diet

🔷 Screen household contacts + report public health

1️⃣4️⃣ 🦠 MERS-CoV

🧬 Pathophysiology & Risk Factors

🔷 Middle East Respiratory Syndrome coronavirus infection

🔷 Zoonotic association with camels/dromedaries

🔷 Droplet/contact spread, aerosols during procedures

🔷 Severe inflammation → pneumonia + ARDS

🔷 Elderly, diabetes, CKD ↑ severe disease risk

🔷 Incubation approximately 2–14 days

🔎 Clinical Manifestations & Diagnostics

🔷 Fever, cough, dyspnea progressive respiratory distress

🔷 GI symptoms: diarrhea, vomiting may occur

🔷 Chest CT/x-ray: bilateral infiltrates/ground-glass opacities

🔷 RT-PCR respiratory specimen confirms diagnosis

🔷 CBC: lymphopenia, thrombocytopenia possible

🔷 ABG may show hypoxemia respiratory failure

💊 Medical / Preventive Management

🔷 Supportive care main treatment strategy

🔷 Oxygen therapy, IV fluids, vasopressors if needed

🔷 Mechanical ventilation severe ARDS cases

🔷 ECMO considered refractory hypoxemia situations

🔷 No standard proven antiviral routinely recommended

🔷 Infection-control measures prevent healthcare outbreaks

🩺 Nursing & Collaborative Management

🔷 Contact + droplet precautions routinely

🔷 N95 during aerosol-generating procedures

🔷 Monitor SpO₂, RR, lung sounds frequently

🔷 Strict hand hygiene + dedicated equipment

🔷 Screen travel/exposure history immediately

🔷 Notify infection-control/public health rapidly

1️⃣5️⃣ 🦠 SARS

🧬 Pathophysiology & Risk Factors

🔷 Severe Acute Respiratory Syndrome coronavirus infection

🔷 Droplet/contact spread, aerosol risk procedures

🔷 Viral replication triggers diffuse alveolar damage

🔷 Healthcare workers high-risk during outbreaks

🔷 Elderly/comorbidities ↑ mortality risk

🔷 Incubation approximately 2–10 days

🔎 Clinical Manifestations & Diagnostics

🔷 High fever, dry cough, malaise initially

🔷 Progressive dyspnea after several days

🔷 Chest x-ray: patchy infiltrates/pneumonia changes

🔷 RT-PCR confirms SARS coronavirus infection

🔷 CBC: lymphopenia common finding

🔷 Severe cases → ARDS, respiratory failure

💊 Medical / Preventive Management

🔷 Supportive care primary treatment approach

🔷 Oxygen therapy + mechanical ventilation PRN

🔷 Antipyretics + IV fluids supportive measures

🔷 No routine proven antiviral standard therapy

🔷 Strict quarantine limits outbreak spread

🔷 Infection-control protocols critical prevention strategy

🩺 Nursing & Collaborative Management

🔷 Contact + droplet precautions implemented immediately

🔷 N95 respirator during aerosol procedures

🔷 Frequent respiratory assessment + ABG monitoring

🔷 Limit transport/visitors during isolation

🔷 Reinforce PPE compliance among healthcare workers

🔷 Report suspected outbreaks immediately

1️⃣6️⃣ 🦠 Anthrax

🧬 Pathophysiology & Risk Factors

🔷 Bacillus anthracis spore-forming gram-positive bacillus

🔷 Exposure via animals, hides, wool, bioterrorism

🔷 Cutaneous, inhalational, gastrointestinal forms possible

🔷 Inhaled spores → hemorrhagic mediastinitis severe disease

🔷 Farmers, veterinarians, lab workers ↑ risk

🔷 Spores survive environment for prolonged periods

🔎 Clinical Manifestations & Diagnostics

🔷 Cutaneous: painless black eschar pathognomonic

🔷 Inhalational: fever, dyspnea, chest pain rapidly worsening

🔷 Chest x-ray: widened mediastinum hallmark finding

🔷 GI anthrax: bloody diarrhea, severe abdominal pain

🔷 Blood culture/PCR confirms Bacillus anthracis

🔷 Severe cases → septic shock, meningitis

💊 Medical / Preventive Management

🔷 Ciprofloxacin first-line treatment option

🔷 Doxycycline alternative antimicrobial therapy

🔷 Anthrax antitoxin severe systemic disease

🔷 Combination IV antibiotics severe inhalational cases

🔷 Post-exposure prophylaxis prolonged antibiotic course

🔷 Anthrax vaccine high-risk occupational exposure

🩺 Nursing & Collaborative Management

🔷 Standard precautions usually sufficient cutaneous cases

🔷 Monitor respiratory deterioration closely inhalational disease

🔷 Assess shock signs, hemodynamic instability rapidly

🔷 Handle contaminated materials carefully

🔷 Coordinate bioterrorism/public health response immediately

🔷 Educate occupational exposure prevention strategies

1️⃣7️⃣ 🦠 COVID-19

🧬 Pathophysiology & Risk Factors

🔷 SARS-CoV-2 infects ACE2 receptor cells

🔷 Droplet, airborne, contact transmission possible

🔷 Severe inflammation → pneumonia + ARDS

🔷 Elderly, obesity, diabetes, HTN ↑ severe risk

🔷 Hypercoagulability → thrombosis/embolism complications

🔷 Incubation approximately 2–14 days

🔎 Clinical Manifestations & Diagnostics

🔷 Fever, cough, fatigue, myalgia common symptoms

🔷 Anosmia/ageusia hallmark early manifestations

🔷 Dyspnea, hypoxemia severe pulmonary involvement

🔷 RT-PCR positive confirms active infection

🔷 Chest CT: bilateral ground-glass opacities

🔷 D-dimer ↑, CRP ↑, ferritin ↑ inflammatory markers

💊 Medical / Preventive Management

🔷 Oxygen therapy titrate SpO₂ ≥94%

🔷 Dexamethasone severe oxygen-requiring disease

🔷 Remdesivir antiviral selected hospitalized patients

🔷 Nirmatrelvir/ritonavir outpatient high-risk therapy

🔷 Anticoagulants prevent thromboembolic complications

🔷 COVID vaccines primary prevention strategy

🩺 Nursing & Collaborative Management

🔷 Airborne/contact precautions, N95 during care

🔷 Frequent SpO₂ + respiratory monitoring

🔷 Encourage proning if tolerated hypoxemia

🔷 Monitor cytokine storm/thrombotic complications

🔷 Educate isolation, masking, vaccination importance

🔷 Provide psychosocial support during isolation

1️⃣8️⃣ 🦠 Dengue Hemorrhagic Fever

🧬 Pathophysiology & Risk Factors

🔷 Dengue virus, Aedes aegypti mosquito vector

🔷 Plasma leakage → hemoconcentration + shock risk

🔷 Secondary infection ↑ severe dengue probability

🔷 Thrombocytopenia increases bleeding tendency

🔷 Rainy season, stagnant water ↑ mosquito breeding

🔷 Critical phase occurs during defervescence

🔎 Clinical Manifestations & Diagnostics

🔷 High fever, severe headache, retro-orbital pain

🔷 Severe myalgia/arthralgia = “breakbone fever”

🔷 Warning signs: abdominal pain, vomiting, bleeding

🔷 Platelets ↓ often <100,000/mm³

🔷 Hematocrit ↑ suggests plasma leakage

🔷 Dengue NS1 antigen / IgM confirms infection

💊 Medical / Preventive Management

🔷 Careful isotonic fluids, avoid fluid overload

🔷 Acetaminophen for fever, avoid NSAIDs/aspirin

🔷 Platelet transfusion only severe bleeding cases

🔷 No routine antibiotic or antiviral therapy

🔷 Dengue vaccine depends on eligibility/local guidance

🔷 Mosquito control, repellents, remove stagnant water

🩺 Nursing & Collaborative Management

🔷 Monitor BP, pulse pressure, capillary refill

🔷 Strict I&O, daily weight, urine output

🔷 Watch bleeding: gums, stool, urine, petechiae

🔷 Monitor Hct/platelets serially during critical phase

🔷 Educate no ibuprofen, naproxen, aspirin

🔷 Prepare shock management if pulse pressure narrows

1️⃣9️⃣ 🦠 Malaria

🧬 Pathophysiology & Risk Factors

🔷 Plasmodium parasite, Anopheles mosquito transmission

🔷 Parasites invade RBCs → hemolysis cycles

🔷 P. falciparum causes severe cerebral malaria

🔷 Travel/residence endemic areas ↑ exposure risk

🔷 Pregnancy, children, immunocompromised ↑ severe disease

🔷 Stagnant water increases mosquito breeding

🔎 Clinical Manifestations & Diagnostics

🔷 Cyclic fever, chills, sweating paroxysms

🔷 Headache, myalgia, fatigue, pallor

🔷 Splenomegaly may occur with chronic infection

🔷 Severe: seizures, coma, jaundice, acidosis

🔷 Thick/thin blood smear confirms parasites

🔷 Rapid diagnostic test detects malaria antigens

💊 Medical / Preventive Management

🔷 Artemether/lumefantrine common uncomplicated treatment

🔷 Chloroquine only if strain sensitive

🔷 IV artesunate for severe malaria

🔷 Primaquine clears liver forms, check G6PD

🔷 Chemoprophylaxis travel: atovaquone/proguanil or doxycycline

🔷 Mosquito nets, repellents, indoor spraying prevention

🩺 Nursing & Collaborative Management

🔷 Monitor temperature pattern, hydration, mental status

🔷 Assess anemia, jaundice, dark urine

🔷 Monitor glucose, hypoglycemia risk severe malaria

🔷 Monitor renal function, urine output closely

🔷 Educate complete antimalarial course

🔷 Coordinate public health/vector control education

2️⃣0️⃣ 🦠 Rabies

🧬 Pathophysiology & Risk Factors

🔷 Lyssavirus transmitted via infected animal saliva

🔷 Virus travels peripheral nerves → CNS

🔷 Once symptomatic, disease almost always fatal

🔷 Dog bites common source in endemic areas

🔷 Bats, cats, wild mammals possible reservoirs

🔷 Unwashed wound + delayed PEP ↑ mortality

🔎 Clinical Manifestations & Diagnostics

🔷 Local tingling/pain at bite site early

🔷 Hydrophobia, aerophobia pathognomonic neurologic signs

🔷 Hypersalivation, agitation, confusion, spasms

🔷 Paralytic rabies presents ascending weakness

🔷 Diagnosis often clinical after symptom onset

🔷 Exposure history guides urgent PEP decision

💊 Medical / Preventive Management

🔷 Immediate wound washing soap-water 15 minutes

🔷 Rabies vaccine post-exposure series as scheduled

🔷 Rabies immunoglobulin infiltrated around wound

🔷 Tetanus prophylaxis if wound indication present

🔷 Antibiotics such as amoxicillin/clavulanate for bite wounds

🔷 Pre-exposure vaccine for high-risk occupations

🩺 Nursing & Collaborative Management

🔷 Treat every suspected rabies exposure urgently

🔷 Document animal type, behavior, vaccination status

🔷 Coordinate animal observation/testing per protocol

🔷 Educate patient complete vaccine schedule

🔷 Provide wound care, infection monitoring

🔷 Report bite/exposure to proper authorities

2️⃣1️⃣ 🦠 Leptospirosis

🧬 Pathophysiology & Risk Factors

🔷 Leptospira bacteria from animal urine contamination

🔷 Enters through skin breaks/mucous membranes

🔷 Floodwater exposure major Philippine risk

🔷 Rats common reservoir in urban flooding

🔷 Can cause kidney, liver, lung involvement

🔷 Farmers, sewer workers, rescuers ↑ exposure

🔎 Clinical Manifestations & Diagnostics

🔷 Fever, headache, severe calf muscle pain

🔷 Conjunctival suffusion important clinical clue

🔷 Jaundice + renal failure = Weil disease

🔷 Hemoptysis/dyspnea suggests pulmonary hemorrhage

🔷 Creatinine ↑, bilirubin ↑, platelets ↓ possible

🔷 Leptospira MAT / PCR / serology confirms

💊 Medical / Preventive Management

🔷 Doxycycline mild disease or prophylaxis use

🔷 Penicillin G severe leptospirosis treatment

🔷 Ceftriaxone alternative severe disease therapy

🔷 IV fluids, electrolyte correction supportive care

🔷 Dialysis if severe acute kidney injury

🔷 Avoid floodwater, boots/gloves protective prevention

🩺 Nursing & Collaborative Management

🔷 Monitor urine output, creatinine, potassium

🔷 Assess jaundice, bleeding, respiratory distress

🔷 Strict I&O, daily weight, hydration status

🔷 Educate avoid wading through floodwater

🔷 Encourage early consult after exposure/fever

🔷 Coordinate renal/ICU care if severe

2️⃣2️⃣ 🦠 Schistosomiasis

🧬 Pathophysiology & Risk Factors

🔷 Schistosoma parasite penetrates skin in freshwater

🔷 Adult worms deposit eggs → inflammation/fibrosis

🔷 Exposure to rivers, irrigation, contaminated freshwater

🔷 Poor sanitation sustains snail-host lifecycle

🔷 Chronic disease affects liver, intestines, bladder

🔷 Endemic rural farming communities at risk

🔎 Clinical Manifestations & Diagnostics

🔷 Itchy rash after freshwater exposure possible

🔷 Fever, abdominal pain, diarrhea in acute phase

🔷 Chronic hepatosplenomegaly, portal hypertension possible

🔷 Hematuria suggests urinary schistosomiasis species

🔷 Stool/urine microscopy detects ova

🔷 Eosinophilia may appear on CBC

💊 Medical / Preventive Management

🔷 Praziquantel is treatment of choice

🔷 Treat anemia/nutrition deficits if present

🔷 Manage portal hypertension complications if severe

🔷 Safe water, sanitation, snail control prevention

🔷 Avoid swimming/wading contaminated freshwater

🔷 Community mass drug administration in endemic areas

🩺 Nursing & Collaborative Management

🔷 Assess exposure history to freshwater sources

🔷 Monitor abdominal distention, bleeding, anemia

🔷 Educate footwear/water avoidance strategies

🔷 Encourage completion of praziquantel regimen

🔷 Coordinate stool/urine follow-up testing

🔷 Collaborate community health sanitation programs

2️⃣3️⃣ 🦠 Amoebiasis

🧬 Pathophysiology & Risk Factors

🔷 Entamoeba histolytica, fecal-oral transmission

🔷 Contaminated food/water ↑ infection risk

🔷 Trophozoites invade colonic mucosa → ulcers

🔷 Flask-shaped intestinal ulcers classic pathology

🔷 Poor sanitation, unsafe water major risks

🔷 Severe cases spread to liver abscess

🔎 Clinical Manifestations & Diagnostics

🔷 Bloody diarrhea, abdominal cramps, tenesmus

🔷 Stool may contain mucus + blood

🔷 Fever usually mild unless invasive disease

🔷 Liver abscess: RUQ pain, fever, hepatomegaly

🔷 Stool ova/parasite exam detects cysts/trophozoites

🔷 Serology/ultrasound useful if liver abscess suspected

💊 Medical / Preventive Management

🔷 Metronidazole treats invasive amoebiasis

🔷 Paromomycin clears intestinal luminal cysts

🔷 Oral rehydration prevents dehydration

🔷 Avoid antimotility drugs in severe dysentery

🔷 Safe water, sanitation, handwashing prevention

🔷 Drain liver abscess if rupture/high-risk

🩺 Nursing & Collaborative Management

🔷 Monitor stool frequency, blood, hydration status

🔷 Strict enteric precautions, hand hygiene emphasized

🔷 Encourage ORS, monitor electrolytes if severe

🔷 Educate food safety, boiled/treated water

🔷 Assess RUQ pain suggesting liver abscess

🔷 Collaborate GI/infectious disease for complications

2️⃣4️⃣ 🦠 Typhoid Fever

🧬 Pathophysiology & Risk Factors

🔷 Salmonella Typhi, fecal-oral transmission

🔷 Contaminated food/water common source

🔷 Invades intestinal lymphoid tissue → bacteremia

🔷 Chronic carriers shed organism in stool

🔷 Poor sanitation, unsafe water ↑ outbreaks

🔷 Incubation usually 6–30 days

🔎 Clinical Manifestations & Diagnostics

🔷 Sustained fever, malaise, headache, anorexia

🔷 Step-ladder fever pattern may occur

🔷 Rose spots on trunk classic finding

🔷 Abdominal pain, constipation or diarrhea

🔷 Blood culture positive early disease

🔷 Widal test supportive, less definitive

💊 Medical / Preventive Management

🔷 Ceftriaxone common severe/hospitalized treatment

🔷 Azithromycin alternative uncomplicated disease

🔷 Rehydration + nutrition supportive care

🔷 Avoid aspirin if bleeding risk present

🔷 Typhoid vaccine for travelers/high-risk areas

🔷 Safe water, sanitation, food hygiene prevention

🩺 Nursing & Collaborative Management

🔷 Enteric precautions, careful stool handling

🔷 Monitor fever curve, abdominal distention

🔷 Watch intestinal bleeding/perforation signs

🔷 Encourage fluids, small frequent meals

🔷 Educate complete antibiotics, avoid food handling

🔷 Report outbreaks to public health authorities

2️⃣5️⃣ 🦠 Cholera

🧬 Pathophysiology & Risk Factors

🔷 Vibrio cholerae toxin causes secretory diarrhea

🔷 Contaminated water/food main transmission route

🔷 Toxin ↑ chloride secretion → massive water loss

🔷 Poor sanitation/disasters ↑ outbreak risk

🔷 Rapid dehydration can cause shock/death

🔷 Incubation usually hours to 5 days

🔎 Clinical Manifestations & Diagnostics

🔷 Profuse “rice-water” stool pathognomonic

🔷 Severe dehydration, thirst, sunken eyes

🔷 Muscle cramps from electrolyte loss

🔷 Tachycardia, hypotension, weak pulse shock

🔷 Stool culture confirms Vibrio cholerae

🔷 Labs: hypokalemia, metabolic acidosis possible

💊 Medical / Preventive Management

🔷 Oral rehydration salts first-line if able

🔷 IV Ringer’s lactate for severe dehydration

🔷 Azithromycin shortens diarrhea duration

🔷 Zinc supplementation useful in children

🔷 Oral cholera vaccine for high-risk settings

🔷 Safe water, sanitation, food hygiene prevention

🩺 Nursing & Collaborative Management

🔷 Assess dehydration severity repeatedly

🔷 Strict I&O, stool volume measurement

🔷 Start rehydration immediately, do not delay

🔷 Monitor potassium, bicarbonate, mental status

🔷 Teach ORS preparation and safe storage

🔷 Coordinate outbreak reporting and community sanitation

2️⃣6️⃣ 🦠 Hepatitis

🧬 Pathophysiology & Risk Factors

🔷 Liver inflammation from viral infection/toxins

🔷 HAV fecal-oral, contaminated food/water

🔷 HBV blood, sexual, perinatal transmission

🔷 HCV bloodborne, chronic disease common

🔷 Hepatocyte injury → impaired metabolism/clotting

🔷 Alcohol, unsafe injections ↑ liver damage risk

🔎 Clinical Manifestations & Diagnostics

🔷 Fatigue, anorexia, nausea, RUQ discomfort

🔷 Jaundice, dark urine, pale stools

🔷 AST/ALT ↑ often > normal range

🔷 Bilirubin ↑ causes yellow sclera/skin

🔷 PT/INR ↑ suggests impaired clotting

🔷 Serology: HBsAg, anti-HAV IgM, anti-HCV

💊 Medical / Preventive Management

🔷 HAV supportive care, hydration, rest

🔷 HBV antivirals: tenofovir, entecavir

🔷 HCV direct antivirals: sofosbuvir-based regimens

🔷 Avoid alcohol, acetaminophen excess, hepatotoxins

🔷 HAV vaccine: 2-dose series

🔷 HBV vaccine: birth dose within 24 hrs

🩺 Nursing & Collaborative Management

🔷 Monitor jaundice, bleeding, mental status

🔷 Implement standard precautions; enteric for HAV hygiene

🔷 Educate no alcohol, safe sex, no needle sharing

🔷 Monitor AST/ALT, bilirubin, PT/INR trends

🔷 Encourage small frequent meals, rest periods

🔷 Coordinate contact vaccination/post-exposure prophylaxis

2️⃣7️⃣ 🦠 HIV/AIDS

🧬 Pathophysiology & Risk Factors

🔷 HIV targets CD4 T-lymphocytes

🔷 Progressive immune destruction → opportunistic infections

🔷 Transmission: sexual, blood, perinatal, needle sharing

🔷 High viral load ↑ transmission probability

🔷 AIDS usually CD4 <200 cells/mm³

🔷 Untreated infection progresses over years

🔎 Clinical Manifestations & Diagnostics

🔷 Acute HIV: fever, rash, sore throat

🔷 Chronic: weight loss, lymphadenopathy, recurrent infections

🔷 Opportunistic infections: PCP, TB, candidiasis

🔷 HIV Ag/Ab test screening standard

🔷 Viral load measures replication/activity

🔷 CD4 count monitors immune function

💊 Medical / Preventive Management

🔷 ART lifelong, start as soon as diagnosed

🔷 Common ART: tenofovir + lamivudine + dolutegravir

🔷 TMP-sulfamethoxazole prevents PCP when CD4 low

🔷 PEP within 72 hrs after exposure

🔷 PrEP for high-risk HIV-negative persons

🔷 Vaccines indicated; avoid live vaccines if severe immunosuppression

🩺 Nursing & Collaborative Management

🔷 Promote strict ART adherence daily

🔷 Monitor side effects, renal/liver labs

🔷 Provide stigma-free confidential counseling

🔷 Educate condom use, U=U concept

🔷 Screen for TB, STIs, hepatitis co-infection

🔷 Coordinate HIV clinic, social support, nutrition care

2️⃣8️⃣ 🦠 Mpox

🧬 Pathophysiology & Risk Factors

🔷 Orthopoxvirus infection, close skin-to-skin transmission

🔷 Spread via lesions, body fluids, contaminated materials

🔷 Animal exposure possible in endemic settings

🔷 Pregnancy, children, immunocompromised ↑ severe disease risk

🔷 HIV with low CD4 ↑ complications

🔷 Incubation commonly 3–17 days

🔎 Clinical Manifestations & Diagnostics

🔷 Fever, headache, myalgia, lymphadenopathy early

🔷 Rash progresses macules → papules → vesicles → pustules

🔷 Painful lymphadenopathy helps differentiate from smallpox

🔷 Lesions may be genital, anal, oral, disseminated

🔷 PCR from lesion swab confirms mpox

🔷 Monitor secondary infection, dehydration, ocular involvement

💊 Medical / Preventive Management

🔷 Supportive care, hydration, nutrition, skin care

🔷 Analgesics: acetaminophen, ibuprofen if appropriate

🔷 Tecovirimat considered severe/high-risk cases, not routine

🔷 Treat bacterial superinfection with indicated antibiotics

🔷 JYNNEOS vaccine: 2 doses, 4 weeks apart

🔷 Post-exposure vaccine ideally ≤4 days, up to 14 days

🩺 Nursing & Collaborative Management

🔷 Standard + contact precautions, lesion covering

🔷 N95 if aerosol-generating procedures performed

🔷 Avoid direct contact with rash/linens

🔷 Educate no sharing towels, bedding, utensils

🔷 Isolate until lesions crusted, scabs gone, new skin

🔷 Coordinate contact tracing + public health reporting

2️⃣9️⃣ 🦠 Chikungunya

🧬 Pathophysiology & Risk Factors

🔷 Alphavirus infection, Aedes mosquito vector

🔷 Virus causes systemic inflammation + joint involvement

🔷 Risk ↑ in tropical/rainy mosquito-prone areas

🔷 Newborns, elderly, comorbid patients ↑ severe disease

🔷 Prior dengue-like illness complicates diagnosis

🔷 Stagnant water ↑ mosquito breeding sites

🔎 Clinical Manifestations & Diagnostics

🔷 Sudden fever + severe symmetric polyarthralgia

🔷 Joint pain often hands, wrists, ankles

🔷 Rash, headache, myalgia commonly occur

🔷 Platelets usually less low than dengue

🔷 RT-PCR early phase, IgM after first week

🔷 Rule out dengue before NSAID use

💊 Medical / Preventive Management

🔷 Supportive care, rest, oral fluids

🔷 Acetaminophen first-line fever/pain control

🔷 Avoid aspirin/NSAIDs until dengue excluded

🔷 NSAIDs may help persistent arthritis later

🔷 No routine specific antiviral therapy

🔷 Mosquito control, repellents, long sleeves prevention

🩺 Nursing & Collaborative Management

🔷 Assess pain score + mobility limitation

🔷 Monitor hydration, fever, bleeding warning signs

🔷 Teach remove stagnant water breeding sites

🔷 Encourage assistive devices if severe arthralgia

🔷 Educate illness may cause prolonged joint pain

🔷 Coordinate community vector-control education

3️⃣0️⃣ 🦠 Zika Virus

🧬 Pathophysiology & Risk Factors

🔷 Flavivirus infection, Aedes mosquito transmission

🔷 Sexual and perinatal transmission possible

🔷 Pregnancy infection → congenital Zika syndrome

🔷 Risk ↑ travel/residence endemic outbreak areas

🔷 Virus affects fetal neurodevelopment

🔷 Many infections asymptomatic or mild

🔎 Clinical Manifestations & Diagnostics

🔷 Low-grade fever, maculopapular rash, conjunctivitis

🔷 Arthralgia, myalgia, headache usually mild

🔷 Congenital cases: microcephaly, brain abnormalities

🔷 RT-PCR serum/urine early infection

🔷 IgM serology later, cross-reactivity with dengue possible

🔷 Ultrasound monitors fetal growth/brain findings

💊 Medical / Preventive Management

🔷 Supportive care, rest, hydration

🔷 Acetaminophen for fever/pain

🔷 Avoid NSAIDs until dengue ruled out

🔷 No routine specific antiviral therapy

🔷 No routine licensed vaccine currently available

🔷 Mosquito bite prevention + condom use

🩺 Nursing & Collaborative Management

🔷 Screen travel and pregnancy exposure history

🔷 Counsel pregnant patients urgently after exposure

🔷 Educate mosquito control + repellents

🔷 Encourage safer sex after exposure/travel

🔷 Monitor for neurologic complications, Guillain-Barré signs

🔷 Coordinate OB, infectious disease, public health referral

3️⃣1️⃣ 🦠 Influenza

🧬 Pathophysiology & Risk Factors

🔷 Influenza virus infects respiratory epithelium

🔷 Droplet spread, seasonal outbreaks common

🔷 Elderly, pregnant, infants ↑ severe disease risk

🔷 Chronic lung/heart disease ↑ complications

🔷 Viral antigenic drift requires yearly vaccine updates

🔷 Secondary bacterial pneumonia possible complication

🔎 Clinical Manifestations & Diagnostics

🔷 Abrupt fever, chills, myalgia, headache

🔷 Dry cough, sore throat, profound fatigue

🔷 High fever often 38–40°C

🔷 Rapid antigen test less sensitive than PCR

🔷 RT-PCR confirms influenza type/subtype

🔷 Chest x-ray if pneumonia suspected, infiltrates possible

💊 Medical / Preventive Management

🔷 Oseltamivir best within 48 hours

🔷 Zanamivir alternative inhaled antiviral

🔷 Acetaminophen for fever/body pain

🔷 Fluids, rest, oxygen if hypoxemic

🔷 Annual influenza vaccine recommended

🔷 Antibiotics only if bacterial coinfection suspected

🩺 Nursing & Collaborative Management

🔷 Droplet precautions during acute illness

🔷 Monitor SpO₂, breath sounds, pneumonia signs

🔷 Encourage fluids, rest, cough etiquette

🔷 Teach stay home until fever-free 24 hrs

🔷 Prioritize vaccination for high-risk groups

🔷 Watch elderly for atypical confusion/weakness

3️⃣2️⃣ 🦠 Meningococcemia

🧬 Pathophysiology & Risk Factors

🔷 Neisseria meningitidis bloodstream invasion

🔷 Endotoxin release → septic shock/DIC

🔷 Droplet transmission from nasopharyngeal carriers

🔷 Crowding, dormitories, barracks ↑ risk

🔷 Asplenia/complement deficiency ↑ severe infection

🔷 Rapid progression within hours possible

🔎 Clinical Manifestations & Diagnostics

🔷 Fever, toxic appearance, severe malaise

🔷 Petechial/purpuric rash = major warning sign

🔷 Hypotension, tachycardia, shock progression

🔷 Neck stiffness may occur with meningitis

🔷 Blood culture confirms organism

🔷 Labs: platelets ↓, PT/PTT ↑, lactate ↑

💊 Medical / Preventive Management

🔷 Ceftriaxone immediate empiric treatment

🔷 IV fluids aggressive sepsis resuscitation

🔷 Vasopressors: norepinephrine if shock persists

🔷 Manage DIC with blood products PRN

🔷 Rifampicin/ciprofloxacin prophylaxis close contacts

🔷 Meningococcal vaccination for prevention/high-risk groups

🩺 Nursing & Collaborative Management

🔷 Droplet precautions until 24 hrs antibiotics

🔷 Activate sepsis protocol immediately

🔷 Monitor skin rash progression/necrosis

🔷 Continuous BP, SpO₂, mental status monitoring

🔷 Prepare ICU transfer if unstable

🔷 Coordinate public health contact tracing

Management of infectious diseases requires integration of microbiology, immunology, epidemiology, pharmacology, infection-control principles, and evidence-based nursing interventions to reduce transmission, complications, outbreaks, and mortality. Nurses are essential in implementing standard and transmission-based precautions, monitoring disease progression, recognizing sepsis and organ dysfunction early, administering antimicrobials safely, promoting vaccination, educating patients and communities, and supporting public-health surveillance and outbreak response. Mastery of infectious diseases strengthens clinical judgment in identifying pathognomonic manifestations, interpreting laboratory and diagnostic findings, prioritizing isolation and emergency interventions, preventing healthcare-associated infections, and promoting patient safety across acute care, community, and global health settings.