title: Seroprevalence of HIV-type 1 in a northern California health plan population: an unlinked survey.
abstract: We conducted an unlinked seroprevalence survey for human immunodeficiency virus-type 1 (HIV-1) of 9821 persons who had a routine personal health appraisal examination in 1989 while members of the Kaiser Permanente Medical Care Program in northern California. An outside laboratory performed enzyme immunoassay (EIA) analyses, and the California Viral and Rickettsial Diseases Laboratory confirmed EIA-reactive samples by immunofluorescent assay and Western blot assay. Only 20 specimens (0.2%) were confirmed as positive, and 18 were from men. These data suggest that, at the time of this survey, HIV-1 infection was not widespread in the northern California population represented by this health plan membership.
authors.affiliation: Division of Research, Kaiser Permanente Medical Care Program, Oakland, CA 94611-5463.
authors.forename: R A
authors.initials: RA
authors.lastname: Hiatt
authors.forename: F J
authors.initials: FJ
authors.lastname: Capell
authors.forename: M S
authors.initials: MS
authors.lastname: Ascher
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002140:California / Q000453:epidemiology; D003219:Confidentiality; D005260:Female; D015528:HIV Seroprevalence; D015497:HIV-1; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D006801:Humans; D007258:Informed Consent; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012111:Residence Characteristics; D012495:San Francisco / Q000453:epidemiology; D015983:Selection Bias; D016036:Seroepidemiologic Studies; D012737:Sex Factors; D016037:Single-Blind Method