Salmonellosis: Typhoid Fever/Paratyphoid Fever

Infectious agent: :  Typhoid fever: Salmonella enterica serotype Typhi (Salmonella Typhi). Prathyroid fever : Salmonella enterica serotypes Paratyphi A. B [tatrate negative], and C [S. Paratyphi]

Description of illness: Symptoms of typhoid fever and parathyroid fever are different from other types of Salmonella infection and include sustained high fever, weakness, stomach pain, headache and loss of appetite.  Individuals with typhoid fever or parathyroid fever carry the bacteria in their bloodstream and intestinal tract.  Some recover from the illness but become carriers of the bacteria and continue to shed S. Typhi/paratyphi in their stool.  In the United States most cases are acquired while traveling internationally.