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In order to assess the immunity to rubella infection in Dongguan, China, we conducted a seroprevalence survey on rubella and used ELISA to measure rubella-specific IgG in serum samples. A total of 1,017 individuals aged 0-59 years were selected by multistage cluster sampling. Among them, 904 (88.9%) were seropositive for rubella. Two groups (20-29 and ≥40 years) had seropositivity rates of &lt;90%. In comparison with participants aged ≥20 years, rubella immunization rates were higher in those aged &lt;20 years (83.2% vs. 93.7%, respectively; χ(2) = 28.063, P &lt; 0.001). Among women aged 20-29 years, only 63.8% had antibodies above the protective level. Multivariate analysis revealed that only sex and age were significantly associated with rubella-protective antibody levels. Our results suggest that in the study area, women of childbearing age had a greater serological susceptibility to rubella. Additional vaccinations for rubella of susceptible young adults should be considered, particularly in women of childbearing age.

Rubella Seroprevalence among the General Population in Dongguan, China