Polio this week

Headlines

  • “One of my key priorities as your Regional Director is to strengthen our region’s public health capacities so that you have all the tools not only to end transmission of polio, but to ensure that polio can indeed never make a comeback,” – Dr Hanan Balhky in her address to Member States during the 10th meeting of the Regional Subcommittee on Polio Eradication and Outbreaks. Read more
  • On 27 March 2014, WHO’s South-East Asia Region (SEARO) was certified wild polio free – a massive undertaking in a region that is home to one-quarter of the world’s population. Now, a decade later, all 11 countries in the region are still free of the virus, thanks to continued commitments to vaccination and disease surveillance.

Summary of new poliovirus this week

  • Afghanistan: 10 WPV1-positive environmental samples
  • Pakistan: 15 WPV1-positive environmental samples
  • Algeria: one cVDPV2-positive environmental sample
  • Burkina Faso: one cVDPV2 case
  • Chad: one cVDPV2-positive environmental sample
  • Côte d’Ivoire: two cVDPV2-positive environmental samples
  • Liberia: one cVDPV2-positive environmental sample
  • Nigeria: five cVDPV2-positive environmental samples
  • South Sudan: two cVDPV2 cases

Country updates as of 27 March 2024

  • No WPV1 cases were reported this week. The total number of cases in 2023 remains six.
  • 10 WPV1-positive environmental samples were reported; four in Nangarhar, three in Kandahar, and one each in Ghazni, Kunar and Hilmand.  All samples were collected in January and are the first confirmed WPV1 isolates for the year.
  • No WPV1 cases were reported this week. There are two cases reported this year while the number of 2023 cases remains 6.
  • 15 WPV1-positive environmental samples were reported; six in Balochistan, five in Sindh and two each in Khyber Pakhtunkhwa and Punjab.
  • No cVDPV2 cases were reported this week. There were three cases reported in 2022.
  • One cVDPV2-positive environmental sample was reported in Tamanghasset.
  • No cVDPV2 cases have been reported since February 2020.
  • No cVDPV2-positive environmental sample was reported this week.
  • No cVDPV2 cases were reported this week. There are 3 cases reported in 2023.
  • No cVDPV2-positive environmental sample was reported this week.
  • No cVDPV2 positive environmental samples were reported this week.
  • One cVDPV2 case was reported in Ziniare bringing the number of 2023 cases to three.
  • No cVDPV2-positive environmental samples were reported this week.
  • No cVDPV2 cases were reported this week. There was one case reported in 2023 and one in 2022.
  • No cVDPV2 cases were reported this week.
  • No cVDPV2-positive environmental samples were reported this week.
  • In August 2022, cVDPV2 was isolated from two environmental samples from a large wastewater treatment plant and a target site in the city of Montreal, Quebec. This was after the country conducted retrospective analysis of wastewater samples. Genetic sequencing confirmed linkage to the cVDPV2 case from New York, USA.
  • No cVDPV2 cases were reported this week. There have been 14 cases reported in 2023 and six cases in 2022.
  • No cVDPV2 cases were reported this week. The number of 2023 cases remains 55.
  • One cVDPV2-positive environmental sample was reported in N’Djamena.
  • No cVDPV2-positive environmental samples were reported this week.
  • No cVDPV2 case was reported this week. There are 6 cases reported in 2023.
  • Two cVDPV2-positive environmental samples were reported; one each in Abidjan 1 and Abidjan 2.
  • There are no polio cases reported in the country.
  • No cVDPV2-positive environmental samples were reported this week.  
  • No cVDPV1 cases were reported this week. The number of 2023 cases remains 105.
  • No cVDPV2 cases were reported this week. The number of 2023 cases remains 118.
  • One cVDPV2-positive environmental sample was reported in Kinshasa.
  • There are no polio cases reported in the country.
  • No cVDPV2-positive environmental sample was reported this week.
  • No cVDPV2 cases were reported this week. There was one case reported in 2022.
  • No cVDPV2 case was reported this week. There was one case reported in 2022.
  • No cVDPV2 case was reported this week. There were three cases reported in 2022.
  • One cVDPV2 case was reported in Conakry making it the first case in 2024. The number of 2023 cases remain 47.
  • 11 cVDPV2-positive environmental samples were reported; eight in Conakry and three in Kankan.
  • No cVDPV2 cases were reported this week. The total number of 2023 cases remain 6.
  • No cVDPV2-positive environmental sample was reported this week.
  • No cVDPV2 cases were reported this week. There has been one cVDPV2 case reported last year.
  • No cVDPV2 cases were reported this week. There have been eight cases reported last year.
  • No cVDPV2-positive environmental samples were reported this week.
  • One cVDPV2-positive environmental sample was reported in Montserrado.
  • No virus was reported this week.  The total number of cVDPV1 cases for 2023 remains 24.
  • No cVDPV1 cases were reported this week. There were four cases reported in the country in 2022.
  • No WPV1 cases were reported in 2023.
  • One cVDPV2 case was reported in Sikasso making it the first case in 2024. The number of cVDPV2 cases in 2023 remains 15.
  • No cVDPV2 cases were reported this week. There has been one case reported in 2023.
  • One cVDPV2-positive environmental sample was reported in Nouakchott Ouest.
  • No cVDPV1 case was reported this week. The number of 2023 cases remains four.
  • No cVDPV2 case was reported this week. There was one case reported in 2023.
  • No cVDPV2 cases were reported this week. There were two cases reported in 2023.
  • No cVDPV2 cases were reported this week. There are four cases in 2024 and 87 cases in 2023.
  • Five cVDPV2-positive environmental samples were reported; three in Sokoto and one each in Kebbi and Niger.
  • No cVDPV2-positive environmental sample was reported this week.
  • The last cVDPV2 case in the country was in October 2021.
  • No cVDPV2-positive environmental sample was reported this week.
  • One cVDPV2 case was reported in Gedo making it the first case in 2024. There are eight cases from 2023.
  • Two cVDPV2 cases were reported in the Upper Nile. One had an onset of paralysis in December and the one in January, making it the first cVDPV2 case in the country this year. There were 3 cases reported last year.
  • No cVDPV2 cases were reported this week. There was one case reported in 2022.
  • No cVDPV2-positive environmental samples were reported this week.
  • No cVDPV2 cases were reported this week. The total number of cases for 2023 remains two.
  • No cVDPV2-positive environmental samples were reported this week.
  • In May 2022, six positive samples were reported following the isolation of vaccine-derived poliovirus type 2 (VDPV2) from environmental samples in London, UK. No cases of paralysis associated with this strain have been detected – virus has been isolated only from environmental (sewage) samples.
  • No cVDPV2 cases were reported this week. One case was reported in New York in September 2022.
  • No cVDPV2 positive environmental samples were reported this week. There were 30 positive samples reported in 2022.
  • Two cVDPV2 case were reported in Alhudaidah one being the first of 2024. There are now eight cases reported in 2023.
  • No cVDPV2 cases were reported this week. There was one case reported last year.
  • No cVDPV2 cases were reported this week. There is one case reported in 2023.
  • Four cVDPV2-positive environmental samples were reported in Harare.

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