Progress Toward Polio Eradication — Worldwide, 2013–2014

Edna K. Moturi, MBChB; Kimberly A. Porter, PhD; Steven G.F. Wassilak, MD; Rudolf H. Tangermann, MD; Ousmane M. Diop, PhD; Cara C. Burns, PhD; Hamid Jafari, MD


Morbidity and Mortality Weekly Report. 2014;63(21):468-472. 

In This Article

Poliovirus Surveillance

Polio cases caused by WPV or by cVDPV are detected through surveillance for acute flaccid paralysis (AFP) cases and testing of stool specimens at WHO-accredited laboratories of the Global Polio Laboratory Network.[8] Of the 12 countries reporting WPV and/or cVDPV cases during 2012–2013, the two main AFP surveillance performance indicators* were met at the national level in five countries (42%). All EMR countries met surveillance performance indicators, except Syria. Surveillance quality indicators in several high-risk countries with recent outbreaks deteriorated during 2013, compared with 2012. In only four (33%) of the 12 countries polio-affected during 2012–2013 was ≥80% of the population living in sub-national areas where both indicators were met during 2013 (Afghanistan, Nigeria, Pakistan, and Somalia). Despite this, virologic evidence showed surveillance gaps in each of these four countries.[8]

* Standard performance indicators include 1) the rate of nonpolio AFP cases (target = ≥1 case per 100,000 population aged <15 years for countries in WHO regions certified as polio-free; all other countries should achieve annual rates of ≥2), and 2) the proportion of AFP cases with adequate stool specimens (target = ≥80%).