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Typhoid fever

Introduction

Typhoid fever is caused by Salmonella typhi bacteria. Typhoid fever is rare in industrialized countries. However, it remains a serious health threat in the developing world. Typhoid fever spreads through contaminated food and water or through close contact with someone who's infected. Signs and symptoms usually include high fever, headache, abdominal pain, and either constipation or diarrhea.

When treated with antibiotics, most people with typhoid fever feel better within a few days, although a small percentage may die of complications.

Vaccines against typhoid fever are available, but they're only partially effective. Vaccines are usually reserved for those who may be exposed to the disease or are traveling to areas where typhoid fever is common.


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INFECTIOUS DISEASE


May 11, 2008