Progress toward measles preelimination--African Region, 2011-2012.

Area of Science:

• Public Health
• Epidemiology
• Vaccinology

Background:

• The World Health Organization (WHO) African Region (AFR) adopted measles preelimination goals in 2008, targeting significant reductions in mortality and incidence by 2012.
• Key targets included high measles-containing vaccine (MCV1) coverage nationally and in districts, alongside robust surveillance performance.

Purpose of the Study:

• To report on the progress made toward the measles preelimination goal in the WHO African Region during 2011-2012.
• To assess the achievement of specific vaccination coverage and surveillance performance targets.

Main Methods:

• Analysis of vaccination coverage data (MCV1 and supplementary immunization activities - SIAs) from member states.
• Evaluation of measles incidence rates and surveillance performance indicators.

Main Results:

• In 2012, only 28% of member states achieved >90% MCV1 coverage, with only 7% meeting both national and district coverage targets.
• Less than 15% of SIAs met the >95% coverage target during 2011-2012.
• In 2012, 37% of member states met the incidence target, and 44% met both surveillance performance targets.

Conclusions:

• Significant gaps remain in achieving measles preelimination targets within the WHO African Region.
• Intensified efforts are required to close immunity gaps, enhance surveillance, and secure leadership and resources for the 2020 measles elimination goal.