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*Health Issues>>>Infectious Diseases issues>>>What is the incubation period for Typhoid Fever? |
Issue What is the incubation period for Typhoid Fever? Best Tip Typhoid fever presents as a febrile illness 5 to 21 days after ingestion of the causative microorganism in contaminated food or water. The incubation period and inoculum needed to cause disease vary depending upon host factors such as age, gastric acidity, and immunologic status. Patients with typhoid fever classically present with sustained fever, abdominal tenderness, and hepatosplenomegaly. However, the clinical manifestations of enteric fever are varied and may include diarrhea or constipation, rash (rose spots), and neuropsychiatric symptoms. Data on the numbers of Salmonella typhi organisms required to cause disease have been obtained from human volunteer studies and from epidemiologic investigations. In general, the greater the dose, the higher the attack rate and the shorter the incubation period. In one report, 10(5) colony forming units of the Quailes strain of S. typhi was administered orally to 116 adults: 32 (28 percent) developed typhoid fever Others 5 to 40 days, usually 10 to 20 days. 1 - 3 weeks |
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