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Typhoid Fever (Salmonella typhi)
1997 Case Definition
CSTE Position Statement Number: 09-ID-67.
Clinical description
An illness caused by Salmonella typhi that
is often characterized by insidious onset of sustained fever,
headache, malaise, anorexia, relative bradycardia, constipation
or diarrhea, and nonproductive cough. However, many mild and
atypical infections occur. Carriage of S. typhi may
be prolonged.
Laboratory criteria for diagnosis
Case classification
Probable: a clinically
compatible case that is epidemiologically linked to a confirmed
case in an outbreak
Confirmed: a clinically compatible case
that is laboratory confirmed
Comment
Isolation of the organism is required for confirmation. Serologic evidence alone is not sufficient for diagnosis. Asymptomatic carriage should not be reported as typhoid fever. Isolates of S. typhi are reported to the Foodborne and Diarrheal Diseases Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, CDC, through the Public Health Laboratory Information System (PHLIS).
The 1997 case definition appearing on this page was originally published in the 1990 MMWR and re-published in the 2009 CSTE position statement 09-ID-67.1,2 Thus, the 1990, 1997, and 2010 versions of the case definition are identical.
References
- CDC. (1990). Case Definitions for Public Health Surveillance. MMWR, 39(RR-13), 1-43. http://www.cdc.gov/mmwr/preview/mmwrhtml/00025629.htm
- CDC. (1997). Case Definitions for Infectious Conditions Under Public Health Surveillance. MMWR, 46(RR-10), 1-55. http://www.cdc.gov/mmwr/preview/mmwrhtml/00047449.htm
See also
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