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Combined performance indicators for the quality of acute flaccid paralysis surveillance in subnational areas of 34 priority countries, World Health Organization African, Eastern Mediterranean, South-East Asia, and Western Pacific regions, 2022

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Abbreviations: AFP, acute flaccid paralysis; NPAFP, nonpolio acute flaccid paralysis; WHO, World Health Organization.

Notes:
(1) Targets: two or more NPAFP cases per 100,000 persons younger than 15 years of age per year and 80% or more of persons with AFP having two stool specimens collected within 14 or fewer days of paralysis onset and 24 or more hours apart and received in good condition (ie, without leakage or desiccation) by a WHO-accredited laboratory via reverse cold chain (storing and transporting samples at recommended temperatures from the point of collection to the laboratory).

(2) Priority countries by region in 2022 included the following: African Region (24): Angola, Benin, Burkina Faso, Cameroon, Central African Republic, Chad, Côte d’Ivoire, Democratic Republic of the Congo, Equatorial Guinea, Ethiopia, Guinea, Guinea-Bissau, Kenya, Madagascar, Malawi, Mali, Mozambique, Niger, Nigeria, South Sudan, Tanzania, Togo, Zambia, and Zimbabwe; Eastern Mediterranean Region (7): Afghanistan, Iraq, Pakistan, Somalia, Sudan, Syria, and Yemen; South-East Asia Region (1): Burma (Myanmar); and Western Pacific Region (2): Papua New Guinea and the Philippines.

(3) NPAFP rate is difficult to interpret when the population aged younger than 15 years is less than 100,000.

(Source: Stehling-Ariza T, Wilkinson AL, Diop OM, et al. Surveillance to track progress toward poliomyelitis eradication - worldwide, 2021-2022. MMWR Morb Mortal Wkly Rep 2023;72[23]:613-20. Public domain.)