Typhoid Mary


A chronic carrier of the agent of typhoid fever, or the chronic carrier of the agent of any other disease. Named for Mary Mallon, an Irish cook who was found to be a healthy typhoid carrier in the US early in the 20th century.

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  • Typhus

    Brill-Zinsser disease; Epidemic typhus; Murine typhus; Scrub typhus.

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    One of the tick-borne rickettsial diseases of the eastern hemisphere, similar to Rocky Mountain spotted fever, but less severe, with fever, a small ulcer (tache noire) at the site of the tick bite, swollen glands nearby (satellite lymphadenopathy), and a red raised (maculopapular) rash. Also called fievre boutonneuse.

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    A severe acute disease with prolonged high fever up to 40° C (104° F), intractable headache, and a pink-to-purple raised rash, due to infection with a microorganism called Rickettsia prowazekii. Among the other signs and symptoms of the disease are cough, dyspnea (difficulty breathing), vomiting, splenomegaly (enlargement of the spleen), hypotension (low blood pressure), and […]

  • Typhus, murine

    An acute infectious disease with fever, headache, and rash, all quite similar to, but milder than, epidemic typhus, caused by a related microorganism, Rickettsia typhi (mooseri), transmitted to humans by rat fleas (Xenopsylla cheopis). The animal reservoir includes rats, mice and other rodents. Murine typhus occurs sporadically worldwide but is more prevalent in congested rat-infested […]


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