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Administratively reported coverage with the third dose of diphtheria-tetanus-pertussis (DTP3) vaccine in local government areas (LGAs) in 12 Nigerian states at high risk for polio, 2010–2013 (n = 286). The solid line represents 0 change in annual coverage, while the dashed line represents the indicator for a 10% relative annual increase in coverage. One LGA in Borno state reported a DTP3 coverage of 80% in 2012 and 244% in 2013 (data not shown).
