Abstract
An epidemiologic study of measles occurring in Rhode Island since the institution of an eradication program revealed that statewide elimination of the disease had been very nearly accomplished within only two years. During a 15-month period of intensive surveillance, 106 suspected cases were investigated, but only 49 were ultimately classified as measles. Cases occurred sporadically as solitary events or in self-limited family outbreaks, usually secondary to infections imported from out of state. Military dependents accounted for more than half the cases. Clinical features, including the presence of Koplik's spots, were less reliable than the epidemiologic history in diagnosis. Of 32 "clinically compatible" illnesses studied in detail serologically, only 10 could be confirmed as recent measles infections. One of these was considered a second natural infection with wild measles virus. Other agents, presumably viral, appeared to mimic the measles syndrome.
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