Lessons and Challenges for Measles Control from Unexpected Large Outbreak, Malawi
Figure 3. . Age distribution of children with measles reported in Malawi, 2010. Vaccine-induced immunity of children in age groups vaccinated mostly through a 2-dose vaccination strategy, whether they have been offered 1 dose of vaccine (2 years, 21–30 years of age) or 2 doses of vaccine (3–20 years of age) and natural immunity of children in age groups mostly immunized through natural infection (>31 years of age). Black bars, no vaccine offered; gray bars, 1 vaccine dose offered; white bars, 2 vaccine doses offered.