This Week

Polio this week as of 11 December 2019

  • In the run up to the WPV certification of the African region next year, the Africa Regional Certification Commission is currently conducting a visit in Nigeria to analyze and verify the accuracy of the certification documents prepared by the Nigerian Government. Read more.
  • “It is important that the Nigerian government and partners avoid any complacency that could jeopardize Nigeria’s removal from the list of polio-endemic countries and certification of wild polio virus interruption for the African Region”, said Dr Pascal Mkanda, Coordinator at Polio Eradication Program, WHO Africa Regional Office  during the 37th session of Expert Review Committee (ERC) on Polio Eradication and Routine Immunization (RI) in Nigeria which took place recently. Read more on the meeting.
  • Summary of new viruses this week (AFP cases and ES positives): Pakistan — three WPV1 cases, nine WPV1 positive environmental samples and nine cVDPV2 positive environmental samples; Democratic Republic of the Congo (DR Congo) — three cVDPV2 cases; Angola — 12 cVDPV2 cases and two cVDPV2 positive environmental samples; Ethiopia — two cVDPV2 cases; Malaysia — one cVDPV1 case; Philippines — one cVDPV1 case and three cVDPV2 cases

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 11 December 2019

  • No wild poliovirus type 1 (WPV1) case was reported this week. There are 22 WPV1 cases reported in 2019. There were 21 WPV1 cases reported in 2018.
  • Read the latest polio snapshot from Afghanistan 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 18 cVDPV2 cases reported in 2019. There were 34 cVDPV2 cases in 2018.
  • Read our Nigeria country page country page for more information.
  • Three wild poliovirus type 1 (WPV1) cases were reported this week: one from Sindh province and two from Khyber Pakhtunkhwa province. The onsets of paralysis were between 09 and 16 November 2019. There are 94 WPV1 cases reported in 2019. There were 12 WPV1 cases in 2018.
  • Nine WPV1 positive environmental samples were reported: 4 each from Sindh and Balochistan provinces and one from Punjab province. The samples were collected between 13 and 20 November 2019.
  • Nine cVDPV2 positive environmental samples were reported: two each from Punjab and Sindh provinces, one each from Gilgit Baltistan and Islamabad provinces and three from Khyber Pakhtunkhwa province. The samples were collected between 25 October and 12 November 2019.
  • Read the latest polio snapshot from Pakistan to see information on cases, surveillance and vaccination campaigns.
  • 12 cVDPV2 cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported this week; four from Benguela province, one each from Cuanza Sul, Bie, Luanda, Bengo, Uige and Huambo provinces and two from Moxico province. The onsets of paralysis were between 10 September and 18 October 2019. There are 71 cVDPV2 cases from seven outbreaks reported in 2019.
  • Two cVDPV2 positive environmental samples were reported; one each from Luanda and Benguela provinces. The samples were collected on 25 October 2019.
  • Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
  • Read our Angola country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are six cVDPV2 cases in 2019 linked to the Jigawa outbreak in Nigeria.
  • The risk of further cVDPV2 spread across West Africa remains high.
  • Read our Benin country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are 16 reported cases in 2019 from six 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 is one cVDPV2 case in the country linked to the Jigawa outbreak in Nigeria.
  • The risk of further cVDPV2 spread across the Lake Chad subregion remains high.
  • Read our Chad country page for more information.
  • 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 case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week.
  • Read our Côte d’Ivoire country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week.    There are nine cVDPV2 cases in 2019 linked to the Jigawa outbreak in Nigeria.
  • The risk of further cVDPV2 spread across West Africa remains high.
  • Read our Ghana country page for more information.
  • Two cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported in Ethiopia this week: one each from Somali and Oromiya provinces. The onsets of paralysis were between 24 July and 09 September 2019. There are total five cVDPV2 cases reported in Ethiopia in 2019, four of them are linked to the outbreak in neighbouring Somalia and fifth case is part of a newly reported Ethiopian outbreak this week.
  • 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.
  • Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
  • 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.
  • One case of circulating vaccine-derived poliovirus type 1 (cVDPV1) was reported this week from Sabah province. The onset of paralysis was 30 October 2019. This is the first reported cases of cVDPV1 in 2019 and it is linked to an ongoing cVDPV1 outbreak in Philippines The last polio case (WPV) in the country was reported in 1992.
  • Read our Malaysia country page for more information.
  • 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. 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.
  • One case of circulating vaccine-derived poliovirus type 1 (cVDPV1) was reported this week from the West Mindanao province. The onset of paralysis was 28 October 2019. This is the first reported cases of cVDPV1 in 2019.
  • Three cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported this week from the Autonomous Region in Muslim Mindanao province. The onsets of paralysis were between 02 and 25 October 2019.
  • Read our Philippines country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are three cVDPV2 cases in 2019 in the country linked to Jigawa outbreak in Nigeria.
  • Read our Togo country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There is one cVDPV2 case from the first outbreak in the country.
  • Read our Zambia country page for more information.