Disease
Typhoid fever
Enteric fever from Salmonella Typhi
TY-foyd FEE-ver
High-yield clue
Rising stepwise fever with rose spots on the trunk and relative bradycardia is the classic typhoid picture.
Overview
A systemic febrile illness (enteric fever) caused by Salmonella enterica serotype Typhi, studied for its stepwise fever, rose spots, and chronic-carrier concept. It matters as a travel- and sanitation-linked syndrome distinct from ordinary Salmonella gastroenteritis.
Classification
- Systemic enteric syndrome
- Human-restricted reservoir
- Acute illness vs chronic carriage
- Sanitation-linked framing
Lab & identification clues
- Rose spots (blanching pink macules on trunk) vocabulary
- Relative bradycardia (pulse-temperature dissociation) term
- Blood culture higher-yield early; stool later concept
- Chronic gallbladder carriage and stool shedding vocabulary
Associations
- Fecal-oral spread via contaminated food and water
- Humans are the only reservoir; carriers sustain spread
- Travel to endemic regions as an at-risk framing
- Gallstones associated with chronic carrier state
Commonly confused with
- Nontyphoidal Salmonella gastroenteritis
- Malaria (febrile traveler)
Frequently asked questions
What is Typhoid fever?
A systemic febrile illness (enteric fever) caused by Salmonella enterica serotype Typhi, studied for its stepwise fever, rose spots, and chronic-carrier concept. It matters as a travel- and sanitation-linked syndrome distinct from ordinary Salmonella gastroenteritis.
What is the high-yield clue for Typhoid fever?
Rising stepwise fever with rose spots on the trunk and relative bradycardia is the classic typhoid picture.
What is Typhoid fever associated with?
Typhoid fever is associated with Fecal-oral spread via contaminated food and water, Humans are the only reservoir; carriers sustain spread, Travel to endemic regions as an at-risk framing, and Gallstones associated with chronic carrier state.
What is Typhoid fever commonly confused with?
Typhoid fever is commonly confused with Nontyphoidal Salmonella gastroenteritis and Malaria (febrile traveler).
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.