This Week

Polio this week as of 16 October 2019

  • Preparations for World Polio Day taking place next week on 24 October are in full swing. On that day, the Global Commission for the Certification of Poliomyelitis Eradication (GCC) is expected to declare poliovirus type 3 (WPV3) as globally eradicated. The event will be broadcast on the internet. Viewers are welcome to follow the proceedings through a WebEx broadcast that will be available here.
  • The Polio Oversight board (POB) met on 6 September 2019 for its third meeting of the year to discuss the current status of work within the programme. The meeting summary is now available.
  • Summary of new viruses (AFP cases and ES positives) this week: Pakistan — two WPV1-positive environmental samples; Philippines— two cVDPV1-positive environmental samples.

See country sections below for more details.

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].

Weekly country updates as of 16 October 2019

  • No wild poliovirus type 1 (WPV1) case was reported. There are 16 WPV1 cases reported in 2019. There were 21 WPV1 cases reported in 2018.
  • Read the latest polio update from Afghanistan to see information on cases, surveillance and vaccination campaigns.
  • No cases of wild poliovirus type 1 (WPV1) were reported this week. There are 72 WPV1 cases reported in 2019. In 2018, there were 12 WPV1 cases.
  • Two WPV1-positive environmental samples were reported: one each from Karachi Orangi and Karachi Landhi in Sindh province. The samples were collected on 24 and 25 September 2019.
  • Read the latest polio update from Pakistan to see information on cases, surveillance and vaccination campaigns.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are 16 cVDPV2 cases reported in 2019. There were 34 cVDPV2 cases in 2018.
  • Read our Nigeria country page to see information on surveillance and vaccination campaigns.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week.
  • In the Lake Chad region, cVDPV2 linked to the outbreak originating in Nigeria has been detected in Niger (one case in 2019 and ten cases in 2018 and in Cameroon (one positive environmental sample, collected on 20 April 2019 in Extreme Nord).
  • The risk of further cVDPV2 spread across the Lake Chad subregion remains high.
  • Read our Niger country page to see information on surveillance and vaccination campaigns.
  • No case of cVDPV2 was reported this week. There is one cVDPV2 case in 2019 linked to Jigawa outbreak in Nigeria
  • The risk of further cVDPV2 spread across West Africa remains high.
  • Read our Benin country page to see information on surveillance and vaccination campaigns.
  • No case of cVDPV2 was reported this week. There is one cVDPV2 case in 2019 linked to Jigawa outbreak in Nigeria.
  • Surveillance is being strengthened in neighbouring Togo, Côte d’Ivoire and Burkina Faso.
  • The risk of further cVDPV2 spread across West Africa remains high.
  • Read our Ghana country page for more information.
  • No case of cVDPV2 was reported this week. There are 10 reported cases in 2019 from five different outbreaks of cVDPV2 in 2019.
  • Read our Central African Republic country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are three cVDPV2 cases reported in 2019.
  • Somalia has reported a total of 15 cVDPV cases (eight type 2, six type 3 and one coinfection of both type 2 and type 3) since the beginning of the outbreaks.  The most recent cVDPV3 virus was from an AFP case from Runingod district, Middle Shabelle province with an onset date of paralysis on 7 September 2018.  Circulating VDPV2 has also been detected during 2018 in one environmental sample in Kenya collected on 21 March 2018.There are also two reported cases of cVDPV2 in Ethiopia, linked to Somalia in 2019.
  • Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) outbreak has been reported this week.  There was one case reported in 2018.
  • Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video
  • Read our Mozambique country page to see information on cases, surveillance and response to the developing outbreak.
  • No circulating vaccine-derived poliovirus type 1 (cVDPV1) cases were reported this week.  One cVDPV1 case was reported in 2018 from Papua province with onset of paralysis on 28 November 2018.
  • This outbreak is not linked to the cVDPV1 in neighbouring Papua New Guinea.
  • Learn more about Indonesia polio outbreak response through weekly situational report
  • No new WPV1-positive environmental samples were reported this week.  In total, three WPV1-positive environmental samples have been reported in 2019, all from Sistan and Balochistan province.  The isolated viruses have been detected in environmental samples only, and genetic sequencing confirms they are linked to WPV1 circulating in Karachi, Pakistan.
  • Read our Iran country page to see information on surveillance and latest travel advisory.
  • No cVDPV2 case was reported in the past week.  The total number of cVDPV2 cases in the country remains one.
  • Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
  • Read our China country page to see information on cases, surveillance and response to the developing outbreak.
  • No circulating vaccine-derived poliovirus type 1 (cVDPV1) cases were reported this week. There are six reported cases of cVDPV1 in 2019.
  • Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
  • Read our Myanmar country page to see information on cases, surveillance and response to the developing outbreak.
  • Two positive cVDPV1 environmental samples were reported from Manila in the National Capital Region. They were collected on 23 September 2019.
  • Read our Philippines country page for more information.