FIGURE 2.

Serious AEFI (hospitalization and all-cause deaths) incidence rates (per 100,000 person-days with exact 95% CI as shaded area) by age (independent of vaccination windows). Incidence per 100,000 person-days (with exact 95% CI as shaded area); Week defined as 6-days period, starting on day-0; Person-time starts from age at first dose of vaccination and duration until the first and last day of the age period or until the Serious AEFI (hospitalization/death) events (succeeding vaccinations not considered). The hospitalization incidence presented in the figure is between 42 and 153 days of age, where 98.6% [(3,402,860/3,451,027)*100] of follow-up calls/visits were made.