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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 ...
Early symptoms may vary from mild to severe. [3] [4] Usually, there is a gradual onset of a high fever over several days; [3] weakness, abdominal pain, constipation, headaches, and mild vomiting. [4] [5]
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.
Signs and symptoms of scrub typhus usually start within 1 to 2 weeks after being infected. These symptoms include fever, headaches, chills, swollen lymph nodes, nausea/vomiting, and a rash at the site of infection called an eschar. More severe symptoms may damage the lungs, brain, kidney, meninges, and heart. [12]
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.
The Vi capsular polysaccharide vaccine (or ViCPS) is a typhoid vaccine recommended by the World Health Organization for the prevention of typhoid (another is Ty21a).The vaccine was first licensed in the US in 1994 and is made from the purified Vi capsular polysaccharide from the Ty2 Salmonella Typhi strain; it is a subunit vaccine.
Johannesburg — For weeks it was dubbed simply "Disease X." But the mysterious flu-like disease that has killed more than 143 people — mainly women and young children — in the Democratic ...