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Winter vomiting disease in Florida students.

L P Levitt, V Wolfe, J O Bond

    The Journal of Hygiene
    |March 1, 1970
    PubMed
    Summary
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    An investigation into a widespread student illness at the University of South Florida identified Winter Vomiting Disease as the likely cause. This outbreak highlights how community illnesses can intensify in residential settings.

    Area of Science:

    • Epidemiology
    • Public Health
    • Infectious Disease

    Background:

    • An outbreak of acute gastrointestinal illness affected approximately 300 students at the University of South Florida in November 1967.
    • Initial suspected causes, including food poisoning and toxic exposure, were ruled out due to lack of common factors.

    Purpose of the Study:

    • To investigate the cause of a sudden increase in gastrointestinal illnesses among students.
    • To characterize the outbreak and determine the most probable diagnosis and transmission mode.

    Main Methods:

    • Epidemiological investigation involving data collection on student symptoms and potential exposures.
    • Analysis of illness patterns, incubation period, and transmission routes.

    Main Results:

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    • The symptoms and epidemic pattern were most consistent with Winter Vomiting Disease, a condition often linked to viral agents.
    • The estimated incubation period was 28 hours, with person-to-person contact identified as the most likely mode of transmission.
    • No common food, water, or toxic source was identified.

    Conclusions:

    • The University outbreak was likely caused by Winter Vomiting Disease, possibly due to a viral agent.
    • Contact transmission was the primary mode, and the outbreak demonstrated how community illnesses can be amplified in residential institutions.