| No images? Click here  Friday, 28 July 2023 Circulating vaccine-derived poliovirus type 2 (cVDPV2) Two Disease Outbreak News on Circulating vaccine-derived poliovirus type 2 (cVDPV2) were issued today, 28 July, on the United Republic of Tanzania and another on Kenya. Situation at a glance in Tanzania On 4 July 2023, the Ministry of Health of the United Republic of Tanzania notified WHO of the detection of circulating vaccine-derived poliovirus type 2 (cVDPV2) in the country. The virus was isolated from a case of acute flaccid paralysis (AFP) in the Rukwa region, southwestern Tanzania bordering Lake Tanganyika to the west and Zambia to the south. Gene sequencing of the isolated virus has indicated close linkage with the cVDPV2 circulating in South Kivu, Demographic Republic of the Congo (DRC).1 The public health authorities of the Ministry of Health are conducting further field investigations including strengthening the AFP surveillance for the detection of additional AFP cases and subnational level immunity gap analysis to identify potential un-or under-immunized populations and/or areas to guide public health response activities. WHO assesses the overall risk at the national level to be high due to the sub-optimal surveillance performance in some districts, sub-optimal vaccination coverage resulting in low population immunity and the ongoing population movement across neighbouring countries. The DON in full: https://www.who.int/emergencies/disease-outbreak-news/item/2023-DON480 Situation at a glance in Kenya On 11 July 2023, WHO received an official report regarding the detection of a circulating vaccine-derived poliovirus type 2 (cVDPV2) in two acute flaccid paralysis (AFP) cases and two asymptomatic healthy children community contacts from Hagadera refugee camp, in Kenya, the second largest refugee camp in the world with over 100 000 refugees. The genetic sequencing analyses showed that all four isolates are genetically linked to the cVDPV2 circulating in Banadir, Somalia. WHO assesses the overall risk at the national level to be high due to the overcrowded living conditions in the refugee camp, high rate of malnutrition, poor water and sanitation facilities, and frequent population movements with Somalia. The DON in full: https://www.who.int/emergencies/disease-outbreak-news/item/2023-DON479  Media contacts:  You are receiving this NO-REPLY email because you are included on a WHO mail list.  |
Friday, July 28, 2023
Disease Outbreak News: Circulating vaccine-derived poliovirus type 2 (cVDPV2) - United Republic of Tanzania, and Kenya
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