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Evidence for a Recent Decrease in Measles Susceptibility among Young American Adults

As part of an ongoing evaluation of US Army immunization policies, two serologic surveys were conducted at an army basic training center. Antibody status to measles, mumps, and rubella were determined by an ELISA in 969 soldiers in 1989 and 992 soldiers in 1990. Measles seronegativity rates, directl...

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Bibliographic Details
Published in:The Journal of infectious diseases 1994-07, Vol.170 (1), p.216-219
Main Authors: Smoak, Bonnie L., Novakoski, William L., Mason, Carl J., Erickson, Ralph L.
Format: Article
Language:English
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Summary:As part of an ongoing evaluation of US Army immunization policies, two serologic surveys were conducted at an army basic training center. Antibody status to measles, mumps, and rubella were determined by an ELISA in 969 soldiers in 1989 and 992 soldiers in 1990. Measles seronegativity rates, directly adjusted to the 15- to 24-year-old US population in 1980, decreased from 21.3% in 1989 to 12.5% in 1990 (P < .001). Decreases also were observed in mumps (16.2% to 14.7%) and rubella seronegativity rates (18.4% to 14.3%) from 1989 to 1990 but were not statistically significant. In subgroup analyses, significant decreases in measles seronegativity were observed in younger, white, male, and female cohorts. There is evidence that susceptibility among young adults had declined, although it remains unclear if this is due to increased immunization or exposure to natural disease.
ISSN:0022-1899
1537-6613
DOI:10.1093/infdis/170.1.216