Tag results : Polio
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Poliomyelitis
Poliomyelitis (polio) is a potentially paralysing viral infection that only occurs in humans
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Topics
Polio
Poliomyelitis is a potentially paralysing, vaccine preventable, viral infection transmitted through food or water contaminated by infected human faeces or by direct contact with an infectious person
Outbreaks
cVDPV2 in Central African Republic
As of 2 October 2026, five circulating vaccine-derived poliovirus type 2 (cVDPV2) cases have been reported in Central African Republic in 2026. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Chad
As of 2 October 2026, eight circulating vaccine-derived poliovirus type 2 (cVDPV2) cases have been reported in Chad in 2026. Please see our Topics in Brief article for further details on polio.
cVDPV2 in DRC
As of 2 October 2026, 58 circulating vaccine-derived poliovirus type 2 (cVDPV2) cases have been reported in Democratic Republic of the Congo in 2026. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Libya
As of 2 October 2026, one circulating vaccine-derived poliovirus type 2 (cVDPV2) environmental sample has been reported in Libya in 2026. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Somalia
As of 2 October 2026, one circulating vaccine-derived poliovirus type 2 (cVDPV2) environmental sample has been reported in Somalia in 2026. Please see our Topics in Brief article for further details on polio.
Warrap
cVDPV2 in South Sudan
As of 2 September 2026, a total of three circulating vaccine-derived poliovirus type 2 (cVDPV2) cases were reported from Jonglei and Warrap states in South Sudan. These are the first cVDPV2 cases reported in 2026. Onset of paralysis was reported in May, June and July 2026 respectively. Please see our Topics in Brief article for further details on polio.
cVDPV3 in Niger
In the week ending 21 August 2026, one case of circulating vaccine derived poliovirus type 3 (cVDPV3) was reported from Niger, with onset of paralysis on 28 June 2026. Please see our Topics in Brief article for further details on polio.
cVDPV1 in Ethiopia
In the week ending 24 June 2026, one circulating vaccine-derived poliovirus type 1 (cVDPV1) case was reported from Gambella, Ethiopia, with onset of paralysis on 16 May 2026. Five cVDPV1 cases have been reported in 2026. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Malawi
In the week ending 2 June 2026, one cVDPV2 case was reported from Malawi, with onset of paralysis on 22 December 2025. Please see our Topics in Brief article for further details on polio.
cVDPV1 in Madagascar
As of 27 May 2026, one circulating vaccine-derived poliovirus type 1 (cVDPV1) case was reported in Madagascar, with onset of paralysis on 4 April 2026, from Sud-Ouest province. It is the first cVDPV1 case reported from the country since 2023 and is genetically linked to a virus detected in the country in 2022. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Australia
On 1 May 2026, an environmental detection of circulating vaccine-derived poliovirus type 2 (cVDPV2) from a wastewater sample was reported in Perth, Western Australia. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Malawi
In the week ending 22 April 2026, one cVDPV2-positive environmental sample was reported from Southern Province, Malawi, collected on 19 February 2026. Please see our Topics in Brief article for further details on polio.
As of 28 January 2026, the Global Polio Eradication Initiative reported two linked cVDPV2-positive environmental samples from Southern Province collected on 8 December 2025. Please see our Topics in Brief article for further details on polio.
Source: GPEIcVDPV1 in South Sudan
As of 20 April 2026, two cVDPV1 cases were reported from the Upper Nile region. Onset of paralysis in both cases was February 2026. Please see our Topics in Brief article for further details on polio.
cVDPV2 in United Kingdom
As of 26 March 2026, vaccine-derived poliovirus type 2 (cVDPV2) has been detected in two unrelated environmental sewage sample collected in London between January and March 2026. Sporadic vaccine-derived poliovirus type 2 (cVDPV2) environmental samples have been identified in various regions since 2022. There is no evidence of community transmission in the UK, and the risk to the public is low. Please see our Topics in Brief article for further details on polio.
As of 12 November 2025, vaccine-derived poliovirus type 2 (VDPV2) has been detected in an environmental sewage sample collected in Yorkshire and the Humber on 16 September 2025. This is the second cVDPV2 positive environmental sample reported in the UK for 2025. Please see our Topics in Brief article for further details on polio.
Source: GPEIcVDPV3 in Nigeria
As of 4 March 2026, a case of circulating vaccine-derived poliovirus type 3 (cVDPV3) has been reported with an onset of paralysis reported on 3 January 2026. Five cases of cVDPV3 were reported in Nigeria during 2025. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Togo
In the week ending 25 February 2026, one case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was confirmed in Togo. This is the first reported case of cVDPV2 in Togo since 2022. Please see our Topics in Brief article for more details on polio.
cVDPV2 in Zambia
As of 22 February 2026, the Zambia Ministry of Health reported a cVDPV2-positive environmental sample from Lusaka. Please see our Topics in Brief article for further details on polio.
Omaheke
cVDPV2 in Namibia
As of 18 February 2026, the Global Polio Eradication Initiative reported two cVDPV2-positive environmental samples from Omaheke and Khomas, collected on 7 January 2026. Please see our Topics in Brief article for further details on polio.
As of 19 November 2025, the Global Polio Eradication Initiative reported one cVDPV2-positive environmental sample from Kavango, Namibia, collected on 14 October 2025. Please see our Topics in Brief article for further details on polio.
Source: GPEIcVDPV2 in Mali
As of 28 January 2026, the Global Polio Eradication Initiative reported one case of circulating vaccine-derived poliovirus type 2 (cVDPV2) from Ménaka. The onset of paralysis was 3 October 2025. Please see our Topics in Brief article for further details on polio.
WPV1 in Germany
Two wild poliovirus type 1 (WPV1) positive environmental samples have been reported from Hamburg on 7 and 13 October 2025. These samples are from the same collection site as the previously-reported WPV1-positive environmental sample collected on 6 October 2025. The isolates are closely genetically linked. There are no associated cases of paralysis and no evidence of local community transmission. Please see our Topics in Brief article for further details on polio.
Wild poliovirus type 1 (WPV1) has been detected in an environmental sample taken from wastewater in Hamburg on 6 October 2025. There have been no reports to date of any clinical or suspected human cases of poliomyelitis in Germany, with the last cases recorded over 30 years ago. Please see our Topics in Brief article for further details on polio.
Source: StateWPV1 in Pakistan
Wild poliovirus type 1 (WPV1) continues to be reported in Pakistan with 30 human cases recorded during 2025. As of 7 January 2026, 36 WPV1-positive environmental samples were reported from specimens collected in November and December 2025 across the country. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Tanzania
As of 7 January 2026, two circulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental samples were reported from specimens collected on 16 December 2025 in Mwanza. Please see our Topics in Brief article for further details on polio.
As of 25 June 2025, one circulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental sample was reported this week. This sample was collected on 19 May 2025 in Mwanza. Please see our Topics in Brief article for further details on polio.
Source: GPEIcVDPV1 in Laos
As of 16 October 2025, one circulating vaccine-derived poliovirus type 1 (cVDPV1) case was confirmed, with onset of paralysis on 3 September 2025, in Savannahket. This is the first case in Laos this year and is a new emergence. Please see our Topics in Brief article for further details on polio.
Oran
cVDPV1 in Algeria
As of 17 September 2025, one circulating vaccine-derived poliovirus type 1 (cVDPV1) case was reported this week, with onset of paralysis on 25 January 2025, from El Tarf. A genetically-linked cVDPV1 was also isolated from an environmental surveillance sample, collected on 17 March, from Oran. This is a new emergence. Please see our Topics in Brief article for further details on polio.
cVDPV3 in Spain
In September 2025, a vaccine-type polio enterovirus (cVDPV3) has been detected in environmental samples at two wastewater treatment plants in Baix Llobregat (Catalonia area). Please see our Topics in Brief article for further details on polio.
cVDPV3 in Chad
As of 28 August 2025, one case of circulating vaccine-derived poliovirus type 3 (cVDPV3) was reported this week, with onset of paralysis on 20 June, from Chari Baguirmi. This is the first cVDPV3 in the country this year. Please see our Topics in Brief article for further details on polio
cVDPV1 in Israel
Between February and July 2025, nine genetically linked circulating vaccine-derived polio virus type 1 (cVDPV1) positive environmental samples were reported from seven sites in Israel, mainly in Jerusalem and the Central Region. Please see our Topics in Brief article for further details on polio.
In the week ending 6 August 2025, six circulating vaccine-derived polio virus type 1 (cVDPV1)-positive environmental samples were reported. Please see our Topics in Brief article for further details on polio.
Source: GPEIcVDPV2 in Germany
In the week ending 6 August 2025, eight circulating vaccine-derived polio virus type 2 (cVDPV2)-positive environmental samples were reported in Germany; one from Baden, three from Bayern, one from Rheinland, and three from Sachsen. Please see our Topics in Brief article for further details on polio.
During the week ending 28 May 2025, one circulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental sample was reported, collected on 21 April, from Sachsen, Germany. Please see our Topics in Brief article for further details on polio.
Source: GPEIAs of 21 May 2025 circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported in an environmental sample from Rheinland-Pfalz. This sample was collected on 7 April 2025. Please see our Topics in Brief article for further details on polio.
Source: GPEIAs of 26 February 2025, four cVDPV2 environmental samples were reported from Berlin, Baden-Wuerttemberg and Nordrheirn-Westfalen in Germany. These samples were collected between November, December 2024 and January 2025. Please see our Topics in Brief article for further details on polio.
Source: GPEIAs of 15 January 2025, 11 cVDPV2 positive environmental samples were reported from Germany in Bonn, Nordrhein-Westfalen, Sachsen and Bayern. These samples were collected during November and December 2024.
Source: GPEIAs of 18 December 2024, a total of seven cirulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental samples have now been detected in environmental sewage samples in Germany collected in November 2024. Please see our Topics in Brief article for further details on polio.
Source: GPEIDuring the week ending 4 December 2024, four cVDPV2-positive environmental samples collected in October and November 2024 were reported from Germany across Munich, Bonn, Cologne and Hamburg. Please see our Topics in Brief article for further details on polio.
Source: GPEIAs of 28 November 2024, circulating vaccine-derived poliovirus type 2 (cVDPV2) has been detected in environmental (sewage) samples in Germany. The detected virus is genetically linked to a strain that emerged in Nigeria. Please see our Topics in Brief article for further details on polio.
Source: WHOcVDPV2 in Central African Republic
On 25 March 2025, one environmental sample of circulating vaccine-derived poliovirus type 2 (cVDPV2) was confirmed in Central African Republic. Please see our Topics in Brief article for further details on polio.
cVDPV3 in Cameroon
As of 16 July 2025, one circulating vaccine-derived poliovirus type 3 (cVDPV3) case was reported this week, with onset of paralysis on 30 May 2025. Laboratory investigations are ongoing to determine its origin. Please see our Topics in Brief article for further details on polio.
National Capital
cVDPV2 in Papua New Guinea
As of 16 July 2025, six circulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental samples have been reported from Morobe and National Capital. These samples were collected on 26 May 2025. Please see our Topics in Brief article for further details on polio.
As of 16 May 2025, two cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) have been reported from Lae, Morobe Province. Please see our Topics in Brief article for further details on polio.
Source: StateA single circulating vaccine-derived polio virus type 2 (cVDPV2) positive environmental sample has been reported from Lae City, Morobe Province in Papua New Guinea. Please see our Topics in Brief article for further details on polio.
Source: GPEIDjibouti
cVDPV1 in Djibouti
As of 20 June 2025, eight circulating vaccine-derived poliovirus type 1 (cVDPV1) positive environmental samples, collected in February, March and April 2025, were reported from Djibouti and Arta. These are the first cVDPV1 isolates reported from the country. Please see our Topics in Brief article for further details on polio.
cVDPV2 in Burkina Faso
As of 14 May 2025, one case of circulating vaccine-derived poliovirus type 2 (cVDPV2) has been reported from Fada, with onset of paralysis on 30 March 2025. This is the first human case reported in Burkina Faso since 2023. Please see our Topics in Brief article for further details on polio.
