Leads From the Morbidity and Mortality Weekly Report Atlanta, Ga pected measles cases were reported from the countries. Of these, 27,635 (31%) have been confirmed, 33,120 (37%) have been discarded, and 27,730 (31%) are under investigation. Of the 27,635 confirmed cases in 1997, a total of 26,919 (97%) were confirmed by laboratory testing or linked epidemiologically to a laboratory-confirmed case, and 716 (3%) were confirmed clinically, without laboratory investigation. Brazil (26,348 confirmed cases) and Canada (570 confirmed cases) accounted for 97% of the total confirmed cases in the region. The United States (135 cases), Paraguay (198), Guadeloupe (116), Argentina (96), Chile (59), Venezuela (
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