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Typhoid fever, also known simply as typhoid, is a disease caused by Salmonella enterica serotype Typhi bacteria, also called Salmonella typhi. [ 2 ] [ 3 ] Symptoms vary from mild to severe, and usually begin six to 30 days after exposure.
Typhoid vaccines are vaccines that prevent typhoid fever. [1] [2] [3] Several types are widely available: typhoid conjugate vaccine (TCV), Ty21a (a live oral vaccine) and Vi capsular polysaccharide vaccine (ViPS) (an injectable subunit vaccine). They are about 30 to 70% effective in the first two years, depending on the specific vaccine in ...
1924 – First vaccine for scarlet fever by George F. Dick and Gladys Dick; 1924 – First inactive vaccine for tetanus (tetanus toxoid, TT) by Gaston Ramon, C. Zoeller and P. Descombey; 1926 – First vaccine for pertussis (whooping cough) by Leila Denmark; 1932 – First vaccine for yellow fever by Max Theiler and Jean Laigret
Salmonellosis is a symptomatic infection caused by bacteria of the Salmonella type. [1] It is the most common disease to be known as food poisoning (though the name refers to food-borne illness in general), these are defined as diseases, usually either infectious or toxic in nature, caused by agents that enter the body through the ingestion of food.
Ty21a is a live attenuated bacterial vaccine that protects against typhoid.First licensed in Europe in 1983 and in the United States in 1989, it is an orally administered, live-attenuated Ty2 strain of S. Typhi in which multiple genes, including the genes responsible for the production of Vi, have been deleted so as to render it harmless but nevertheless immunogenic.
The CDC e stimates that salmonella causes 1.35 million infections in the United States each year. Contaminated food is the source of most of the illnesses. Contaminated food is the source of most ...
Enteric fever is a medical term encompassing two types of salmonellosis, which, specifically, are typhoid fever and paratyphoid fever. [1] Enteric fever is a potentially life-threatening acute febrile systemic infection and is diagnosed by isolating a pathogen on culture.
In 2000, typhoid fever caused an estimated 21.7 million illnesses and 217,000 deaths. [1] It occurs most often in children and young adults between 5 and 19 years old. [2] In 2013, it resulted in about 161,000 deaths – down from 181,000 in 1990. [3]