Polio this week

Headlines

  • “Where I work, people have poor understanding of health matters, especially around vaccines. They fear vaccines, they fear us, the polio workers. I explain to them: I’m here for you, for the health and safety of your children. I’m here despite the intense heat and the biting cold. When you refuse to vaccinate, it is the children who will suffer the most. My only motivation is that children and families are spared the suffering of polio,” Gulzar Ahmed Khan, a 28-year-old polio social mobilizer in Pakistan. Read more…

Summary of new polioviruses this week, cases and positive environmental isolates:

  • Cameroon: one cVDPV2-positive environmental sample
  • Central African Republic: one cVDPV2 case
  • Chad: two cVDPV2-positive environmental samples
  • DR Congo: one cVDPV1 case and three cVDPV2 cases
  • Kenya: two cVDPV2 cases
  • Nigeria: nine cVDPV2 cases and one positive environmental sample
  • Somalia: one cVDPV2 case

Country updates as of 01 November 2023

  • No WPV1 cases were reported this week.  The total number of cases in 2023 remains six.
  • No WPV1-positive environmental samples were reported this week.
  • No WPV1 cases were reported this week. The total number of cases this year remains four.
  • No WPV1 positive environmental samples were reported this week.
  • Intensified efforts continue to be implemented in the country, particularly in the southern area of Khyber Pakhtunkhwa, to urgently stop remaining WPV1 transmission. Permanently stopping transmission in this province, and in Afghanistan’s East region – the remaining endemic zones and the source of all WPV1 detected outside of these areas – is a top priority.
  • Any virus detection outside the endemic zones is treated as per the GPEI outbreak response guidelines, to prevent re-establishment of transmission.
  • No cVDPV2 cases were reported this week. There were three cases reported last year.
  • No cVDPV2 positive environmental sample was reported this week.
  • No cVDPV2 cases were reported this week. There were 13 cases reported in 2022 while the number of 2023 cases stands at 3.
  • No cVDPV2 positive environmental samples were reported this week.
  • No cVDPV2 cases were reported this week. There have been two cases reported this year.
  • No cVDPV2 case was reported this week. There is one case reported this year and one last year.
  • No cVDPV2 cases were reported this week. There were three cases reported in 2022.
  • One cVDPV2 positive environmental sample was reported in Centre.
  • In August 2022, a cVDPV2 had been isolated from two environmental samples from a large wastewater treatment plant and a target site in the city of Montreal, Quebec, after the country conducted retrospective analysis of wastewater samples. Genetic sequencing confirmed linkage to the cVDPV2 case from New York, USA.
  • One cVDPV2 case was reported in RS6. There have been 13 cases reported this year and six cases in 2022.
  • No cVDPV2 cases were reported this week. There have been 37 cases reported this year.
  • Two cVDPV2 positive environmental samples were reported in N’Djamena.
  • No cVDPV1 cases were reported this week. There was one case reported in 2022.
  • No cVDPV2 cases were reported this week. There have been five cases reported this year.
  • No cVDPV2 positive environmental samples were reported this week.
  • There are no polio cases reported in the country.
  • 11 cVDPV2 positive environmental samples have been collected, the most recent on 22 May 2022.  
  • One cVDPV1 case was reported in Haut Lomami, bringing the number of cases this year to 79.
  • Three cVDPV2 cases were reported; one each in Haut Katanga, Lomami and Haut Lomami. There have been 103 cases reported this year.
  • No cVDPV2-positive environmental samples were reported this week.
  • There are no polio cases reported in the country.
  • No cVDPV2 positive environmental samples were reported this week. There have been six cVDPV2 positive environmental samples collected in the country this year.
  • 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.
  • No cVDPV2 cases were reported this week. There have been seven cases reported this year.
  • No cVDPV2-positive environmental sample was reported this week.
  • No cVDPV2 case was reported this week. There have been three cases this year and one case in 2022.
  • No cVDPV2 case were reported this week. There has been one cVDPV2 case reported this year.
  • In 2022, one cVDPV3 case was reported, with onset of paralysis on 12 February 2022, linked to cVDPV3-positive environmental samples previously detected in the country (25 positive samples in total were reported in 2022, the most recent sample was collected on 15 March 2022).
  • Two cVDPV2 cases were reported in Garissa. There have been eight cases reported this year.
  • No cVDPV1 cases were reported this week. There have been 23 cases reported this year and 16 cases in 2022.
  • No cVDPV1 positive environmental samples were reported this week.
  • No cVDPV1 cases were reported this week. There were four cases reported in the country in 2022.
  • One WPV1 case from 2021 was detected in 2022.
  • No cVDPV2 cases were reported this week.  There have been nine cases reported this year and two cases reported last year.
  • No WPV1 case was reported this week. There were eight cases reported in 2022.
  • No cVDPV1 cases were reported this week. There have been three cases reported this year and 22 cases reported last year.
  • No cVDPV2 cases were reported this week. There were four cases reported in 2022.
  • No cVDPV2 case was reported this week. The number of 2022 cases remains 16.
  • Nine cVDPV2 cases were reported; four in Kebbi, one each in Kano and Jigawa and three in Zamfara. There have been 35 cases reported this year.
  • One cVDPV2-positive environmental sample was reported in Kano.
  • No cVDPV2 cases were reported this week. There have been no polio cases since 2021.
  • One cVDPV2 case was reported in Galgadud. There are four cases reported this year and five cases in 2022.
  • No cVDPV2 cases were reported this week. There was one case reported in 2022.
  • The current conflict has severely impacted the delivery of healthcare and the function of health infrastructure throughout the country, particularly in Khartoum, North Kordofan and Darfur states. The second round of the cVDPV2 outbreak response campaign has been paused until further notice.
  • AFP surveillance remains active nationwide and mitigation measures around sample collection and storage are being implemented.
  • No cVDPV2 cases were reported this week. There have been two cases reported in the country this year.
  • Since 2022, Tanzania has been actively participating in a multi-country outbreak response across south-east Africa, in response to detection of different strains of poliovirus in the sub-region, including by boosting immunity levels and strengthening subnational surveillance capacity.
  • No cVDPV2 cases were reported this week. There were two cases reported in 2022.
  • 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.
  • No cVDPV2 cases were reported this week. There have been three cases reported this year and 162 cases last year.
  • No cVDPV2 cases were reported this week. There is one case reported this year.
  • No cVDPV2 positive environmental samples were reported this week.

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