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This Week

Polio this week as of 02 September 2021

  • Summary of new WPV and cVDPV viruses this week (AFP cases and ES positives):
    • Pakistan: one WPV1 positive environmental sample
    • Ethiopia: two cVDPV2 cases
    • Gambia: four cVDPV2 positive environmental samples
    • Liberia: one cVDPV2 positive environmental sample
    • Mali: one cVDPV2 case
    • Mauritania: two cVDPV2 positive environmental samples
    • Niger: one cVDPV2 positive environmental sample
    • Nigeria: twenty-three cVDPV2 cases and fifteen cVDPV2 positive environmental samples
    • Senegal: two cVDPV2 positive environmental samples
    • Sierra Leone: one cVDPV2 case
    • Tajikistan: one cVDPV2 case

Weekly country updates as of 02 September 2021

  • No wild poliovirus type 1 (WPV1) case was reported this week. There is one case reported in 2021 while the total number of 2020 cases remains at 56.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. The number of 2021 cases remains 43. There were 308 cVDPV2 cases reported in 2020.
  • Read the latest polio snapshot from Afghanistan to see information on cases, surveillance and vaccination campaigns.
  • No wild poliovirus type 1 (WPV1) case was reported this week. There is one case reported in 2021. The total number of 2020 cases remains at 84.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. The number of 2021 cases remains at eight. There were 135 cases reported in 2020.
  • Read the latest polio snapshot 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 were three cVDPV2 cases reported in 2020.
  • Read our Angola country pagefor more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are two cases reported in 2021 so far. There were three cVDPV2 cases reported in 2020. These cases are all linked to the Jigawa outbreak in Nigeria.
  • Read our Benin country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are two cases reported in 2021 so far. The number of 2020 cases remains at 65. The country is affected by different outbreaks, one linked to the Jigawa outbreak in Nigeria and one to the Savanes outbreak in Togo.
  • Read our Burkina Faso country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were seven cVDPV2 cases reported in 2020.
  • Read our Cameroon country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were four cVDPV2 cases reported in 2020.
  • 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 were 99 cVDPV2 cases reported in 2020 from three different outbreaks.
  • The risk of further cVDPV2 spread across the Lake Chad subregion remains high.
  • Read our Chad country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are two cases reported in 2021. There were two cases reported in 2020.
  • Read our Congo country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. The number of 2020 cases remains at 61.
  • 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 ten cases reported in 2021 so far. The total number of 2020 cases remains at 81.
  • Read our Democratic Republic of the Congocountry page for more information.
  • No cVDPV2 positive environmental sample was reported this week. There are 10 positive samples reported in 2021. There was one positive sample reported in 2020.
  • Read our Egypt country page for more information.
  • Two cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported in Oromiya. There are nine cases reported in 2021 so far. The total number of 2020 cases remains at 36.
  • Read our Ethiopia country page for more information.
  • Four cVDPV2 positive environmental samples were reported in Western Region 1. Six cVDPV2 positive samples linked to the Jigawa outbreak in Nigeria are reported in 2021 so far.
  • Read our Gambia country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were 12 cases reported in 2020.
  • Read our Ghana country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are six cases in 2021 so far. The total number of 2020 cases remains at 44.
  • Read our Guinea country page for more information.
  • No cVDPV2 positive environmental sample was reported this week. There was one cVDPV2 positive environmental sample reported in 2020 and one in 2021. The virus is linked to the Banadir outbreak in Somalia.
  • Read our Kenya country page 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 the country.
  • One environmental positive sample was reported in Montserrado from 2020.
  • Read our Liberia country page country page for more information.
  • No case of circulating vaccine-derived poliovirus type 1 (cVDPV1) was reported this week. There are six cases in 2021 and two from 2020.
  • Read our Madagascar country page country page for more information.
  • No case of circulating vaccine-derived poliovirus type 1 (cVDPV1) was reported this week. There was one case in 2020.
  • Read our Malaysia country page for more information.
  • One case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported in Koulikoro. The number of 2020 cases is now 51.
  • Read our Mali country page country page for more information.
  • Two cVDPV2 positive environmental samples were reported in Trarza. Two positive samples linked to the Jigawa outbreak in Nigeria are reported in 2021 so far.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. The number of 2020 cases remains at 10.
  • One environmental positive sample was reported in Maradi from 2020.
  • Read our Niger country page for more information.

 

  • 23 cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported: five in Borno, two in Jigawa, three each in Kaduna and Kebbi, six in Kano, one each in Nasarawa, Sokoto, Taraba and Zamfara. There are 123 cases reported in 2021 so far. There were eight cases reported in 2020.
  • 15 environmental positive samples were reported: one each in Benue, Borno, Gombe, Katsina, Nasarawa, Niger, Oyo, Sokoto and Zamfara, two each in Jigawa, Kano and Yobe.
  • Read our Nigeria country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. The number of 2021 cases remains at 13.
  • Two cVDPV2 positive environmental samples were reported in Dakar.
  • Read our Senegal page for more information.
  • One case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported in Northern. There are five cases in 2021 while the number of 2020 cases remains at 10.
  • Read our Sierra Leone page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were 14 cVDPV2 cases reported in 2020.
  • Read our Somalia country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are 59 cVDPV2 cases in the country; 9 in 2021 and 50 in 2020.
  • Read our South Sudan country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. The number of 2020 cases remains at 58. The initial viruses were linked to the ongoing outbreak in Chad followed by local transmission.
  • Read our Sudan country page for more information.
  • One case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported in Khatlon. There are 32 cases reported in 2021 so far. There was one case reported in 2020.
  • Read our Tajikistan country page for more information.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were nine cases reported in 2020.
  • Read our Togo country page for more information.
  • No cVDPV2 positive environmental sample was reported this week. Two positive samples linked to the N’Djamena outbreak in Chad are reported in 2021 so far.
  • Read our Uganda country page for more information.
  • No case of circulating vaccine-derived poliovirus type 1 (cVDPV1) was reported this week. There are three cases reported in 2021 so far and a total of 35 altogether.
  • Read our Yemen country page for more information.