Tropical and monsoon fevers

Enteric fever (typhoid and paratyphoid)

Reviewed Nov 2026·2 references
New· views rounded down, updated weekly

Complicated enteric fever (encephalopathy, shock, perforation, GI bleeding) needs IV ceftriaxone (or azithromycin combination), blood cultures before antibiotics, and early surgical review for perforation. Fluoroquinolone resistance is high in India.

At the bedside

Timed steps
  1. 1

    Cultures

    Diagnose

    Blood culture (best in week 1, ~40-80% sensitive); bone marrow culture more sensitive; Widal is unreliable.

  2. 2

    Uncomplicated

    Treat

    Azithromycin 500 mg-1 g daily for 7 days or cefixime orally; fluoroquinolones only if susceptible.

  3. 3

    Severe

    Treat

    Ceftriaxone 2 g IV daily (some use 2 g 12-hourly or 4 g/day in severe cases) for 10-14 days ± azithromycin; adjust to susceptibility. XDR typhoid (travel from Pakistan): meropenem + azithromycin.

  4. 4

    Week 2-3

    Complications

    Perforation (abdominal pain, guarding, free gas): resuscitate, add anaerobic cover, urgent laparotomy. GI bleed: transfusion, endoscopy. Encephalopathy/shock: consider high-dose dexamethasone (3 mg/kg then 1 mg/kg 6-hourly × 8 doses).

Complicated enteric fever

Ceftriaxone

IV
Dose
2 g once daily for 10-14 days
Red flag · call your senior now
New abdominal pain and tachycardia in the second week: perforation.
Pitfall
Diagnosing typhoid on a single Widal titre.
Pitfall
Ciprofloxacin as empirical therapy in India (high resistance).
Pearl
Fever often takes 4-7 days to settle even on effective therapy; do not switch antibiotics too early.

Test yourself

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Educational reference for trained clinicians. Check doses against your hospital protocol and the patient in front of you.