1. Monthly Distribution of Wild Poliovirus Cases1, 2014-20182
WPV type 1
Number of Wild Poliovirus Cases
2014
2018
2016
2015
2017
1By date of onset of paralysis. Cases with onset in March 2018 will be reflected in the next update.
2No WPV2 nor WPV3 cases were reported in
Data in WHO HQ as of 17 April 2018

2. Ambiguous Vaccine-derived Poliovirus (aVDPV)1 Cases, 2008-2018
1For aVDPV definition see : Figure includes only aVDPV positives from AFP case reporting.
Data in WHO HQ as of 17 April 2018

3. Non-polio AFP Rate March 2016 – February 2017
< 0.5
> 1
No AFP Surveillance/data
The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement.
© WHO All rights reserved
Data in WHO HQ as of 17 April 2018

4. Adequate Stool Collection Percentage
March 2016 – February 2017
March 2017 – February 2018
< 60%
60% %
> 80%
No AFP Surveillance/data
The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement.
© WHO All rights reserved
Data in WHO HQ as of 20 March 2018

5. Surveillance Indicators, AFRO and EMRO
March – February 2018 (Rolling 12 months)
Non-polio AFP rate
< 1
1 – 1.99
>= 2
Adequate stool collection percentage
< 50%
50 – 79.99%
>= 80%
The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement.
© WHO All rights reserved
Data in WHO HQ as of 17 April 2018

6. Surveillance Indicators, AFRO and EMRO
October 2017 – March 2018 (Rolling 6 months)
Non-polio AFP rate
< 1
1 – 1.99
>= 2
Adequate stool collection percentage
< 50%
50 – 79.99%
>= 80%
The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement.
© WHO 2018 All rights reserved
Data in WHO HQ as of 17 April 2018