This Week
Polio this week as of 24 May 2023
Headlines:
- The 76th WHO World Health Assembly (WHA) is taking place in Geneva this week where global Health leaders have come together to discuss how to better tackle priority health issues. In his welcoming speech, Dr Tedros Adhanom Ghebreyesus, WHO’s Director General referenced polio eradication and how far we’ve come. Read more…
- G7 Health Ministers commend polio value for broader public health emergencies and call for strengthened support to achieve polio-free world. Read more…
Summary of new polioviruses this week:
- Afghanistan: one WPV1 positive environmental sample
- Algeria: one cVDPV2 positive environmental sample
- DR Congo: three cVDPV1 cases and nine cVDPV2 cases
- Madagascar: three cVDPV1 positive environmental samples
Weekly country updates as of 24 May 2023
- No WPV1 case was reported this week. There have been two cases reported this year and two last year.
- One WPV1 positive environmental sample is reported in Nangarhar. There have been 23 WPV1 positive environmental samples reported this year.
- No WPV1 case was reported this week. There has been one WPV1 case in 2023 reported from Bannu, part of the seven polio-endemic districts located in the southern area of Khyber Pakhtunkhwa.
- One WPV1 positive environmental sample was reported in Khyber Pahktunkhwa.
- Intensified efforts continue to be implemented in the country, particularly in the southern area of Khyber Pakhtunkhwa, to urgently eradicate the remaining endemic WPV1 transmission. Since January 2021, all reported cases have been from seven polio-endemic districts in the southern area of Khyber Pahktunkhwa (out of a total of 171 districts nationwide).
- No cVDPV2 case was reported this week. There were three cases reported last year.
- One cVDPV2 positive environmental sample was reported in Tamanghasset. There are 12 cVDPV2 positive environmental samples reported in the country this year.
- No cVDPV2 case was reported this week. There have been two cases reported this year.
- There are no reported polio cases in the country however, four positive environmental samples were collected last year and one was reported in February.
- No cVDPV2 case was reported this week. There have been no cases reported since 2021.
- No cVDPV2 case was reported this week. There was one cVDPV2 case reported in the country in 2022.
- No cVDPV2 case was reported this week. There were three cases reported in 2022.
- No cVDPV2 was reported this week. 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.
- Two cVDPV2 cases were reported this week; one each in RS1 and RS3 provinces. There have been seven cases reported in the country this year.
- One cVDPV2 case was reported in Tandjile. There have been six cases reported this year.
- No cVDPV1 case was reported this week. There was one case reported in 2022.
- No cVDPV2 case was reported this week. There has been one case this year.
- Three cVDPV2 positive environmental samples have been reported in the country with the most recent sample collected in July 2022.
- There are no polio cases reported in the country. However, 12 cVDPV2 positive environmental samples were collected in 2022.
- Three cVDPV1 cases were reported; two in in Haut Lomami and one in Haut Katanga bringing the number of 2023 cases to 14 and 2022 cases to 146.
- Nine cVDPV2 cases were reported; four in Haut Lomami, one each in Haut Katanga, Bas Uele and Mongala, and two in Kasai Oriental bringing the number of 2023 cases to 30 and 363 for 2022.
- There are no polio cases reported in the country. However, six cVDPV2 positive environmental samples were collected in 2022, with the most recent one in August 2022.
- No cVDPV2 case was 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 case was reported this week. There have been three cases this year and one case in 2022.
- No cVDPV2 case was reported this week. There has been one cVDPV2 case reported this year.
- In 2022, one cVDPV3 case had been reported, with onset of paralysis on 12 February 2022, linked to cVDPV3-positive environmental samples previously detected in the country (25 samples in total were reported in 2022, the most recent sample had been collected on 15 March 2022).
- No cVDPV1 cases were reported this week. There have been nine cases reported this year. Last year, there were 14 cVDPV1 cases.
- Three cVDPV1 positive environmental samples were reported; two in Boeni and one in Anosy.
- No WPV1 case was reported this week. One case from 2021 was reported in 2022.
- No cVDPV1 was reported this week. There were four cases reported in the country in 2022.
- No cVDPV2 case was reported this week. There were two cases reported in 2022.
- 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 case of cVDPV2 was reported this week. There were four cases reported in 2022.
- No cVDPV2 case was reported this week. There were 15 cases reported last year.
- Two cVDPV2 cases were reported this week; one each in Sokoto and Kebbi. There are six cVDPV2 cases reported this year and 48 cases reported in 2022.
- One cVDPV2 positive environmental samples was reported in Sokoto.
- No cVDPV2 case was reported this week. There have been no polio cases since 2021. One cVDPV2 positive environmental sample was collected in January 2022.
- One cVDPV2 case was reported this week. There are two cases reported this year and five cases in 2022.
- No cVDPV2 case was reported this week. There was one case reported in 2022.
- The current situation affecting the country 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.
- No cVDPV2 case was 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 case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. One cVDPV2 case was reported in New York in September 2022.
- No circulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental sample was reported this week. There were 14 positive samples reported in 2022.
- No cVDPV2 case was reported this week. There were 162 cases reported in 2022.
- There are no reported polio cases in the country however, there were three cVDPV2 positive environmental samples collected last year with the most recent one in December.
For more country information, please visit the respective pages within the Outbreak and Endemic country sections of the GPEI website.
