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November 1995

Measles Outbreak—Guam, 1994

Arch Dermatol. 1995;131(11):1251-1252. doi:10.1001/archderm.1995.01690230029002

ONE OF the largest outbreaks of measles in the United States and its territories since 1992 occurred in Guam during 1994. From February 8 through June 25, 1994, a total of 280 suspected, probable, or confirmed cases of measles were reported to the Guam Department of Public Health and Social Services (GDPH). Of these cases, 228 were considered confirmed, including 47 serologically confirmed cases. This report summarizes findings from the investigation of these 228 cases.*

The index case occurred in an 8-month-old child who developed a rash on February 7,1994. This case could not be epidemiologically linked to a previous measles outbreak in Guam (22 cases) that occurred during October 20-December 26, 1993; that outbreak was initiated by an imported case from the Republic of Palau. In addition, genetic sequencing of viral isolates indicated that viruses that had circulated in Palau and in Guam were different. The outbreak peaked in

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