title: Pseudo-outbreak of infectious mononucleosis--Puerto Rico, 1990.
abstract: From September 11 through October 7, 1990, 57 persons (including outpatients, inpatients, and staff) at a community hospital in Puerto Rico had laboratory-confirmed infectious mononucleosis; however, investigation determined that test results may have been misinterpreted. This report describes the investigation of this pseudo-outbreak by the Puerto Rico Department of Health (PRDH) in October 1990.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007244:Infectious Mononucleosis / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D011647:Puerto Rico / Q000453:epidemiology