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Table 2 AFP performance indicators for Sokoto State, Nigeria, 2012–2019

From: Evaluation of acute flaccid paralysis surveillance indicators in Sokoto state, Nigeria, 2012–2019: a secondary data analysis

Performance indicator Target State performance
2012 2013 2014 2015 2016 2017 2018 2019
Annualized non-polio AFP rate /100,000 < 15 years population ≥3 13.5 15 20.1 23.5 19.1 21.7 11.8 9.1
Proportion of AFP cases with two adequate stool specimens ≥80% 92.5 97 99.3 100 100 99.7 96.7 96.1
Timeliness of monthly reporting ≥80% 100 100 89 100 96 100 100 96
completeness of monthly reporting ≥90% 100 100 99 100 97 100 100 97
Proportion of AFP cases investigated within 48 h of notification ≥80% 98.3 100 100 99.4 100 100 100 100
Reported AFP cases with follow-up exam at least 60 days after paralysis onset. ≥80% 80.8 100 100 100 100 100 100 100
The proportion of specimens that arrived at a WHO accredited laboratory < 3 days of being sent ≥80% 100 100 100 100 100 100 100 100
Proportion of stool specimens arriving at the laboratory in good condition ≥80% 99.3 99.5 100 99.8 99 99 100 100
Proportion of stool specimens from which Non-Polio Enterovirus (NPENT) was isolated ≥10% 14.9 11.1 11.4 9.5 14 13 14 13
AFP surveillance index ≥1.6 12.5 14.6 20.0 23.5 19.1 21.6 11.4 8.7