Abstract Title:

Laboratory characterization of measles virus infection in previously vaccinated and unvaccinated individuals.

Abstract Source:

J Infect Dis. 2011 Jul ;204 Suppl 1:S549-58. PMID: 21666212

Abstract Author(s):

Carole J Hickman, Terri B Hyde, Sun Bae Sowers, Sara Mercader, Marcia McGrew, Nobia J Williams, Judy A Beeler, Susette Audet, Bryan Kiehl, Robin Nandy, Azaibi Tamin, William J Bellini

Article Affiliation:

Carole J Hickman


Waning immunity or secondary vaccine failure (SVF) has been anticipated by some as a challenge to global measles elimination efforts. Although such cases are infrequent, measles virus (MeV) infection can occur in vaccinated individuals following intense and/or prolonged exposure to an infected individual and may present as a modified illness that is unrecognizable as measles outside of the context of a measles outbreak. The immunoglobulin M response in previously vaccinated individuals may be nominal or fleeting, and viral replication may be limited. As global elimination proceeds, additional methods for confirming modified measles cases may be needed to understand whether SVF cases contribute to continued measles virus (MeV) transmission. In this report, we describe clinical symptoms and laboratory results for unvaccinated individuals with acute measles and individuals with SVF identified during MeV outbreaks. SVF cases were characterized by the serological parameters of high-avidity antibodies and distinctively high levels of neutralizing antibody. These parameters may represent useful biomarkers for classification of SVF cases that previously could not be confirmed as such using routine laboratory diagnostic techniques.

Study Type : Human Study
Additional Links
Anti Therapeutic Actions : Vaccination: Measles : CK(631) : AC(73)

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Sayer Ji
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