Seroprevalence of IgG Antibodies to Measles, Mumps, Rubella and Varicella in Adolescents with Documented Two-Dose MMR Vaccination: Cross-Sectional Study
Background: Measles, mumps, and rubella outbreaks continue to occur despite high vaccination coverage, raising concerns about long-term vaccine-induced immunity. This study assessed serological protection against measles, mumps, rubella, and varicella in fully vaccinated Russian adolescents to identify immunity gaps an...