An infectious disease caused by the bacterium Salmonella enterica serovar Typhi, usually acquired by consuming food or water contaminated with the bacterium.
Typhoid fever is a systemic infection rather than simply a gastrointestinal illness. The bacteria can enter the bloodstream and cause prolonged fever and other symptoms, including headache, weakness, abdominal discomfort, and changes in bowel habits. Transmission is strongly associated with inadequate sanitation, contaminated water, and poor food hygiene.
QUICK FACT
Typhoid is different from typhus. Despite their similar names, they are caused by different bacteria and are transmitted in different ways.
COMMONLY CONFUSED WITH
Food poisoning: a broad term for illness caused by contaminated food; typhoid is a specific systemic bacterial infection.
SEE ALSO