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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. [4] [5] Often there is a gradual onset of a high fever over several days. [4]
The name comes from the Greek tûphos (τῦφος), meaning 'hazy' or 'smoky' and commonly used as a word for delusion, describing the state of mind of those infected. [7] While typhoid means 'typhus-like', typhus and typhoid fever are distinct diseases caused by different types of bacteria, the latter by specific strains of Salmonella typhi. [8]
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]
Typhoid fever causes 11 million infections and more than 100,000 deaths per year, and is most prevalent in south Asia – which accounts for 70% of the global disease burden.
Typhoid fever is caused by Salmonella serotypes which are strictly adapted to humans or higher primates—these include Salmonella Typhi, Paratyphi A, Paratyphi B, and Paratyphi C. In the systemic form of the disease, salmonellae pass through the lymphatic system of the intestine into the blood of the patients (typhoid form) and are carried to ...
Typhoid is contracted by drinking or eating contaminated matter and symptoms include nausea, fever, abdominal pain and pink spots on the chest. Drug-resistant 'superbug' strain of typhoid spreads ...
Complications of the disease often appear as anemia or septicaemia, and the mortality rate is 15% once these symptoms arise. [ 14 ] The serogroup S. Typhi is the cause of typhoid fever .
Cases of tularemia, also known as "rabbit fever," are on the rise in the U.S., according to a new report from the Centers for Disease Control and Prevention (CDC). Caused by the bacteria ...