Seroprevalence of Immunoglobulin G against measles and rubella over a 12-year period (2009-2021) in Kilifi, Kenya and the impact of the Measles-Rubella (MR) vaccine campaign of 2016.

Distribution of log of concentration also showed an increasing trend ( Fig.2 ) Prior to the introduction of the rubella vaccine in 2016, total seroprevalence among children under 15 years old ranged from 34% to 48% ( Table 2a ).

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