Which bacterium causes typhoid fever?
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Salmonella Typhi
It is a close relative of the food-poisoning salmonellae.
💡 Did you know? Humans are its only host.
10 questions · History
Typhoid fever (more precisely: typhoid) is a severe, feverish intestinal disease that raged for centuries above all where clean water was lacking: in crowded cities, army camps and on ships. It is caused by the bacterium Salmonella Typhi, which enters the body through contaminated drinking water and food. The name comes from the Greek „typhos“, meaning something like „fog“ or „stupor“, describing the clouded state of the severely ill. Typical are slowly rising high fever, headache and abdominal pain, and sometimes reddish spots on the skin. Untreated, typhoid can last for weeks and end fatally. The case of the cook Mary Mallon, „Typhoid Mary“, became famous: as a symptom-free chronic carrier she unknowingly infected dozens of people: the first documented example of a healthy carrier. The best protection against typhoid is still clean water and food hygiene; there is also a vaccine. Antibiotics make the disease easily treatable, but resistant strains are of growing concern. In poorer countries typhoid still claims tens of thousands of lives each year and remains a measure of the state of the drinking-water supply.
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Salmonella Typhi
It is a close relative of the food-poisoning salmonellae.
💡 Did you know? Humans are its only host.
Contaminated water and food
The pathogen enters the gut through the mouth.
💡 Did you know? Good hygiene is the most effective protection.
Fog or stupor
It describes the clouded state of patients.
💡 Did you know? The term comes from Greek.
High, lasting fever
It rises slowly over days.
💡 Did you know? Headache and abdominal pain add to it.
Typhoid Mary
She was a cook and infected many without being ill herself.
💡 Did you know? Her case coined the idea of the chronic carrier.
With antibiotics
Treated early, it is easily curable.
💡 Did you know? Resistant strains are, however, increasing.
Yes
Travellers to risk areas often get vaccinated.
💡 Did you know? Clean water still remains decisive.
Rose spots
They usually show on the abdomen.
💡 Did you know? They are a classic sign of the disease.
With typhus (spotted fever)
Typhus is spread by lice and is a different disease.
💡 Did you know? In English both names are confusingly similar.
With poor hygiene
Wars and disasters favour outbreaks.
💡 Did you know? Where sewers are lacking, the disease looms.
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