How is typhoid spread

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how is typhoid spread

Typhoid fever spreads through contaminated food and water or through close contact with someone who's infected. Signs and symptoms.

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It is usually spread through contaminated food or water. Urbanization and climate change have the potential to increase the global burden of typhoid. Salmonella Typhi lives only in humans. Persons with typhoid fever carry the bacteria in their bloodstream and intestinal tract. Symptoms include prolonged high fever, fatigue, headache, nausea, abdominal pain, and constipation or diarrhoea.

The typhoid bacillus Salmonella typhi , which infects humans only. Paratyphoid and enteric fevers are caused by other species of Salmonella , which infect domestic animals as well as humans. The typhoid bacillus is transmitted by consumption of contaminated food or water. Occasionally, direct faecal—oral transmission may occur. Shellfish taken from sewage-polluted areas are an important source of infection; transmission also occurs through eating raw fruit and vegetables fertilized by human excreta and through ingestion of contaminated milk and milk products. Flies may cause human infection through transfer of the infectious agents to foods. Pollution of water sources may produce epidemics of typhoid fever when large numbers of people use the same source of drinking-water.

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Typhoid fever is a life-threatening illness caused by the bacterium Salmonella Typhi.
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Typhoid fever , also known simply as typhoid , is a bacterial infection due to a specific type of Salmonella that causes symptoms. The cause is the bacterium Salmonella enterica subsp. In , Classically, the progression of untreated typhoid fever is divided into four distinct stages, each lasting about a week. Over the course of these stages, the patient becomes exhausted and emaciated. The Gram-negative bacterium that causes typhoid fever is Salmonella enterica subsp. Unlike other strains of Salmonella , no animal carriers of typhoid are known.

Back to Health A to Z. Typhoid fever is a bacterial infection that can spread throughout the body, affecting many organs. Without prompt treatment, it can cause serious complications and can be fatal. It's caused by a bacterium called Salmonella typhi, which is related to the bacteria that cause salmonella food poisoning. Typhoid fever is highly contagious. An infected person can pass the bacteria out of their body in their poo stools or, less commonly, in their pee urine.

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, especially for children. Typhoid fever spreads through contaminated food and water or through close contact with someone who's infected. Signs and symptoms usually include a high fever, headache, abdominal pain, and either constipation or diarrhea.



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