This Week

Polio this week as of 22 June 2022

Headlines

  • The Global Polio Laboratory Network (GPLN) has confirmed the isolation of type 2 vaccine-derived poliovirus (VDPV2) from environmental samples in London, United Kingdom (UK), which were detected as part of ongoing disease surveillance.  It is important to note that the virus has been isolated from environmental samples only – no associated cases of paralysis have been detected.  Recent coverage for the primary course of DTaP/IPV/Hib/HepB vaccination, which protects a 25_Polio_Global_update_22Jun2022gainst several diseases including polio, in London suggests immunization coverage of 86.6%. Read more
  • The GPEI has released the 2021 Annual expenditure report which contains details of the programme expenditure for both WHO and UNICEF, broken down by category.
  • Summary of new polioviruses this week:
    Pakistan: two WPV1 cases
    – Burkina Faso: one cVDPV2 positive environmental sample
    – DR Congo: 15 cVDPV2 cases
    – Madagascar: two cVDPV1 positive environmental samples
    – Yemen: five cVDPV2 cases

Weekly country updates as of 22 June 2022

  • No new WPV1 or cVDPV2 viruses were reported this week. There is one WPV1 case reported in 2022 and four in 2021.  The total number of cVDPV2 cases remains 43.
  • Two WPV1 cases were reported in Khyber Pakhtunkhwa bringing the number of 2022 cases to 10. There was one WPV1 case in 2021. The total number of cVDPV2 cases remains eight.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were three cases reported in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were two cases reported in 2021.
  • One cVDPV2 positive environmental sample was reported in Ouagadougou.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were three cases reported in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were no cases reported in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. The number of 2022 cases remains five.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were two cases reported in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were no cases reported in 2021.
  • No cVDPV2 positive environmental samples were reported this week. There are 14 positive environmental samples reported in the country, all linked to the virus circulating in Yemen.
  • 15 cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported; 12 in Maniema, two in Sud-Kivu and one in Tanganyika. The number of 2022 cases now stands at 63. There were 28 cases in 2021.
  • The outbreak is affecting primarily the east of the country, and the risk of further expansion of the outbreak is compounded by a significant number of zero-dose children in the area.
  • No cVDPV2 positive environmental samples were reported this week. There are 16 positive samples reported in the country.
  • An internal surveillance review is scheduled for this month, as part of preparations for the expected Outbreak Response Assessment.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were ten cases reported in 2021.
  • No cVDPV2 was reported this week.  There is one case reported in 2021.
  • No cVDPV2 positive environmental samples were reported this week. There were nine positive samples in 2021.
  • No cVDPV2 positive environmental samples were reported this week. There are four positive samples reported in 2022.  
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are six cases in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are three cases in the country which are linked to the Jigawa outbreak in Nigeria in 2021.
  • No case of circulating vaccine-derived poliovirus type 3 (cVDPV3) was reported this week. There is one case reported in the country in 2022.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were three cVDPV2 cases in 2021.
  • No cases of circulating vaccine-derived poliovirus type 1 (cVDPV1) were reported this week. The number of 2022 cases remains five. There were 13 cases in 2021.
  • Two cVDPV1 positive environmental samples were reported; one each in Analamanga and Diana.
  • No case of WPV1 was reported this week. One case was reported for 2021.
  • Following the first two of a series of multi-country outbreak response campaigns implemented in March and April/May, preparations are ongoing in both Malawi and neighbouring countries for the subsequent campaigns.
  • In total, at least four, multi-country campaigns will be implemented.
  • No cVDPV2 positive environmental sample was reported this week. There were seven positive samples linked to the Jigawa outbreak in 2021.
  • No WPV1 cases were reported this week.  In 2022, one WPV1 case has been reported.
  • The Government of Mozambique continues to respond to both WPV1 and cVDPV2 in the country.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are two cases in 2022 so far. There were 17 cases reported in 2021.
  • No cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported this week. The number of 2022 cases remains 26. There were 415 cases reported in 2021.
  • No cVDPV3 positive environmental samples were reported this week.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were 17 cases reported in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were five cases reported in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There are two cases reported in 2022. There was one case reported in 2021.
  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were 9 cVDPV2 cases reported in 2021.
  • No cVDPV2 positive environmental sample was reported this week. There was one sample reported last week, the first in the country.
  • No cVDPV2 positive environmental sample was reported this week. There were two positive samples linked to the N’Djamena outbreak in Chad reported in 2021.

 

  • No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were two cases reported in 2021.
  • Five cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported; two in Saadah and one each in Dhamar, Sanaa City and Hajjah. The number of cVDPV2 cases in 2022 now stands at 45. There were 66 cVDPV2 cases and three cVDPV1 cases in 2021.
  • Almost two-thirds of the areas reporting the bulk of cVDPV2 cases have not implemented any type 2-containing polio vaccination campaign, underscoring the risk both to local children and to neighbouring countries.
  • Intensive efforts are ongoing to access Yemen’s northern governorates with polio vaccine.

For more country information, please visit the respective pages within the Outbreak and Endemic country sections of the GPEI website.