Antibody induced by immunization with the Jeryl Lynn mumps vaccine strain effectively neutralizes a heterologous wild-type mumps virus associated with a large outbreak.
Recent mumps outbreaks in older vaccinated populations were caused primarily by genotype G viruses, which are phylogenetically distinct from the genotype A vaccine strains used in the countries affected by the outbreaks. This finding suggests that genotype A vaccine strains could have reduced efficacy against heterologous mumps viruses. The remote history of vaccination also suggests that waning immunity could have contributed to susceptibility. To examine these issues, we obtained consecutive serum samples from children at different intervals after vaccination and assayed the ability of these samples to neutralize the genotype A Jeryl Lynn mumps virus vaccine strain and a genotype G wild-type virus obtained during the mumps outbreak that occurred in the United States in 2006. Although the geometric mean neutralizing antibody titers against the genotype G virus were approximately one-half the titers measured against the vaccine strain, and although titers to both viruses decreased with time after vaccination, antibody induced by immunization with the Jeryl Lynn mumps vaccine strain effectively neutralized the outbreak-associated virus at all time points tested.
Division of Viral Products, Center for Biologics Evaluation and Research, United States Food and Drug Administration, Bethesda, Maryland 20892, USA. steven.rubin@fda.hhs.gov
Steven A
SA
Rubin
Li
L
Qi
Susette A
SA
Audet
Bradley
B
Sullivan
Kathryn M
KM
Carbone
William J
WJ
Bellini
Paul A
PA
Rota
Lev
L
Sirota
Judy
J
Beeler
D000914:Antibodies, Viral / Q000276:immunology*; D000917:Antibody Formation; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D007114:Immunization; D022542:Measles-Mumps-Rubella Vaccine / Q000008:administration & dosage / Q000276:immunology / Q000592:standards; D009107:Mumps / Q000453:epidemiology / Q000276:immunology / Q000821:virology*; D009108:Mumps Vaccine / Q000008:administration & dosage* / Q000276:immunology* / Q000592:standards; D009109:Mumps virus / Q000145:classification / Q000276:immunology*; D009500:Neutralization Tests; D016896:Treatment Outcome; D017778:Vaccines, Combined / Q000276:immunology / Q000592:standards
D000914:Antibodies, Viral; D022542:Measles-Mumps-Rubella Vaccine; D009108:Mumps Vaccine; D017778:Vaccines, Combined