Key result
Polio immunization activities in Afghanistan are linked to a ~29% drop in wild poliovirus cases.
Why the study?
Progress toward poliomyelitis eradication in Afghanistan required monitoring of vaccination coverage and challenges such as security-related inaccessibility.
Comparison
Oral poliovirus vaccine administered through routine immunization and supplementary immunization activities
Design
Observational study
Follow-up
January 2015 to August 2016
Authors
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Supports intensified SIAs in insecure areas; leaves open whether current strategies suffice for eradication.
Observational
Absolute Event Rate: 20% vs 28%
While wild poliovirus type 1 cases in Afghanistan declined from 2014 to 2015, eradication efforts remain challenged by security issues, inaccessible areas, and cross-border transmission.
Mbaeyi et al. (2016) conducted an observational in Poliomyelitis. Polio immunization activities vs. Historical data (2014) was evaluated on Reported cases of wild poliovirus type 1 (WPV1). Polio immunization activities in Afghanistan were associated with a decline in wild poliovirus type 1 cases from 28 in 2014 to 20 in 2015, though endemic transmission continues in some regions.
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