County of Los Angeles
Department of Public Health
Acute Communicable Disease Control
313 N. Figueroa Street, Room 212
Los Angeles, CA 90012
Phone: (213) 240-7941
Fax: (213) 482-4856
E-Mail:acdc2@ph.lacounty.gov
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Acute Communicable Disease Control
Typhoid Fever, Carrier
The chronic typhoid carrier state can occur following symptomatic or subclinical infections of
Salmonella typhi. Among untreated cases, 10% will shed bacteria for three months after
initial onset of symptoms and 2-5% will become chronic carriers. The chronic carrier state
occurs most commonly among middle-aged women.