Posted on Jun 30, 2018
Are we losing the battle?  Polio cases up 166 per cent over last year.
Polio is a crippling and potentially fatal infectious disease.
There is no cure, but there are safe and effective vaccines.
The strategy to eradicate polio is therefore based on preventing infection by immunising every child until transmission stops and the world is polio-free.
There is no cure for polio, only treatment to alleviate the symptoms.  Heat and physical therapy is used to stimulate the muscles and antispasmodic drugs are given to relax the muscles. While this can improve mobility, it cannot reverse permanent polio paralysis.Polio can be prevented through immunization. Polio vaccine, given multiple times, almost always protects a child for life.


Polio this week as of 28 August 2018

  • Summary of new viruses this week: Afghanistan – one new wild poliovirus type 1 (WPV1) case. Democratic Republic of the Congo ‒ Based on positive contacts, two negative AFP index cases classified as circulating vaccine-derived poliovirus type 2 (cVDPV2). Nigeria – three  new cases of cVDPV2. Papua New Guinea – two  new cases of circulating vaccine-derived poliovirus type 1 (cVDPV1). See country sections below for more details.
  • To assess if the 2016 trivalent-bivalent oral polio vaccine “switch” was successful, a group of researchers from Imperial College London, WHO and the Bill & Melinda Gates Foundation analysed stool and sewage samples from 112 countries collected in the first 15 months after the switch. Study results were published this week in The New England Journal of Medicine. Read more.

Wild poliovirus type 1 and Circulating vaccine-derived poliovirus cases

Total casesYear-to-date 2018Year-to-date 2017Total in 2017
—In Endemic Countries15890220
—In Non-Endemic Countries024047096

Case breakdown by country

CountriesYear-to-date 2018Year-to-date 2017Total in 2017Onset of paralysis of most recent case
Democratic Republic Of The Congo01308022NA22-Jul-2018
Papua New Guinea050000NA8-Jul-2018
Syrian Arab Republic00039074NA21-Sep-2017

NA: Onset of paralysis in most recent case is prior to 2017. Figures exclude non-AFP sources.  In 2018, cVDPV includes all three serotypes 1, 2 and 3.

For Somalia: 1 cVDPV2 and cVDPV3 isolated from one AFP case.

cVDPV definition: see document “Reporting and classification of vaccine-derived polioviruses” at [pdf].