A new study suggests that trench fever, a disease common during the First World War, has been reported among some Canadians experiencing homelessness.

The study, published Monday in the Canadian Medical Association Journal, found that trench fever was present in certain urban, homeless populations in Canada, with researchers warning that physicians should be aware of the potentially fatal disease.

Trench fever, which is caused by the bacteria Bartonella quintana, is transmitted through body lice. Researchers say the disease was first described during the First World War and was widespread among soldiers.
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Image: A new study suggests that trench fever has been reported among some Canadians experiencing homelessness. (Carl Boodman/ CMAJ — Informed patient consent obtained for publication of the case and pictures)