Part 8 · Intestinal, Vector-Borne and Zoonotic Diseases

69. Cholera and Enteric Fever

~3 min read

Same concept, other depth: Foundation →

Dr. Amy

your study friend

Dear Doctor, shall we discuss & understand?

Sweet, clear and patient — like a friend who really wants you to get it. I believe in you — let's grow step by step.

Your tutor:

Voice chat works best in Chrome or Edge — you can also read, listen and type below.

Feature	Detail
Agent	V. cholerae O1 (biotypes classical and El Tor; serotypes Ogawa, Inaba, Hikojima), O139 (Bengal, 1992)
Reservoir	Humans (cases, convalescent and asymptomatic carriers); aquatic environment (copepods)
Transmission	Contaminated water (major), food, seafood
Incubation	A few hours to 5 days (usually 1–2 days)
Infectious dose	High (10⁶–10⁸), lower with hypochlorhydria
Clinical	Profuse painless rice‑water stools, vomiting, rapid severe dehydration, muscle cramps; most infections mild/asymptomatic (iceberg)
CFR	< 1% with proper treatment; up to 50% untreated

Loading the rest of this concept…

Talk it through with Dr. Amy

Dear Doctor, I'll teach a little, then listen to you — slowly, warmly, and at your pace.

Finished this one?

No test, no score — just a tick for you, kept on your own device.

Connected to this topic

Educational only — not a substitute for clinical judgement, supervision, or local guidelines.

Loading…

Feature

Detail

Agent

V. cholerae O1 (biotypes classical and El Tor; serotypes Ogawa, Inaba, Hikojima), O139 (Bengal, 1992)

Reservoir

Humans (cases, convalescent and asymptomatic carriers); aquatic environment (copepods)

Transmission

Contaminated water (major), food, seafood

Incubation

A few hours to 5 days (usually 1–2 days)

Infectious dose

High (10⁶–10⁸), lower with hypochlorhydria

Clinical

Profuse painless rice‑water stools, vomiting, rapid severe dehydration, muscle cramps; most infections mild/asymptomatic (iceberg)

CFR

< 1% with proper treatment; up to 50% untreated