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. 2011 Apr 19;8(4):e1001024. doi: 10.1371/journal.pmed.1001024

Figure 4. Impact of rotavirus vaccination on monthly events of diarrhea admissions in Brazil by region.

Figure 4

Each analysis compares the monthly observed events among children under 5 y after rotavirus vaccination (2007 to 2009) with expected events in the absence of vaccination, by region. Expected number of events and 95% CIs are based on predictions from regression models fitted to historic data from each region (2002 to 2005).