(2020) [15] show a decreasing trend in two dose vaccine effectiveness as time since the first dose of measles-containing vaccines increases in eliminating settings.
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Identifying immunity gaps for measles using Belgian serial serology data.
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The estimated exposure rates exhibit an increasing trend towards the younger birth cohorts, an evolution which is also observed in the standardized number of measles cases (per 100 susceptible individuals; gray bars in Fig. 3 ).