epidemiology
noun/ˌepɪˌdiːmiˈɒlədʒi/
/ˌepɪˌdiːmiˈɑːlədʒi/
[uncountable]- the scientific study of the spread and control of diseasesWord Originlate 19th cent.: from Greek epidēmia ‘prevalence of disease’ + -logy.
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epidemiology