Situation update for the period covered:
- In the occupied Palestinian territory, an outbreak of circulating vaccine-derived poliovirus type 2 (cVDPV2) was confirmed on 16 July 2024, after cVDPV2 was detected in six environmental surveillance (ES) samples that had been collected in Deir al Balah and Khan Younis governorates in Gaza on 23 June 2024. During the reporting period, cVDPV2 was detected in a 10-month-old child and 17 ES samples in Gaza.
- In Somalia, cVDPV2 was detected in three children and three ES samples as of 31 December 2024. All the cVDPV2 isolates belong to the SOM-BAN-1 emergence. The date of onset for the most recent cVDPV2 case is 5 June 2024 and date of collection of the most recent positive ES sample is 14 May 2024.
- In Sudan, following genetic sequencing, VDPV2 was confirmed in three environmental samples collected from the ES site of Kashafa Internally Displaced Camp and Kosti Teaching Hospital in White Nile State. The samples had been collected on 15 August, 25 September and 25 October 2024 respectively.
- In Yemen,* cVDPV2 was reported in 35 cases, 33 of which were from the northern governorates. One positive environmental sample has been reported from Aden between June and 31 December 2024 and six positive environmental samples were confirmed in the northern governorates between January and May 2024. The most recent virus isolation for the period covered was from an AFP case reported from Al Hudaydah governorate.
*Note: Sample shipments from the northern governorates of Yemen have stalled since June 2024.
Circulating vaccine-derived poliovirus type 2 (VDPV2) isolates, 2024 to date:
Djibouti: 0 AFP; 3 ES
Egypt: 0 AFP; 2 ES
oPt: 1 AFP; 17 ES
Somalia: 3 AFP; 3 ES
Sudan: 0 AFP; 2 ES
Yemen: 35 AFP; 7 ES
2025
IMST Situation Report - Week 41 - 2 January 2025
2024
IMST Situation Report - Week 25 - 26 December 2024
IMST Situation Report - Week 24 - 20 June 2024
IMST Situation Report - Week 13 - 28 March 2024
IMST Situation Report - Week 6 - 10 February 2024
2023
IMST Situation Report - Week 51 - 23 December 2023
IMST Situation Report - Week 45 - 9 November 2023
IMST Situation Report - Week 35 - 31 August 2023
IMST Situation Report - Week 28 - 13 July 2023
IMST Situation Report - Week 22 - 1 June 2023
IMST Situation Report - Week 17 - 27 April 2023
IMST Situation Report - Week 12 - 23 March 2023
2022
2022 polio outbreaks/events at a glance
IMST Situation Report - Week 29 - 2022
IMST Situation Report - Week 29 - 2022
IMST Situation Report - Week 28 - 2022
IMST Situation Report - Week 27 - 2022
IMST Situation Report - Week 26 - 2022
IMST Situation Report - Week 25 - 2022
IMST Situation Report - Week 24 - 2022
IMST Situation Report - Week 23 - 2022
IMST Situation Report - Week 22 - 2022
IMST Situation Report – Week 52 – 2021 download unavailable; update sent as informal email
2021
IMST Situation Report - Week 44 - 2021
IMST Situation Report - Week 40 - 2021
IMST Situation Report - Week 36 - 2021
IMST Situation Report - Week 31 - 2021
IMST Situation Report - Week 26 - 2021
IMST Situation Report - Week 20 - 2021
IMST Situation Report - Week 16 - 2021
IMST Situation Report - Week 10 - 2021
IMST Situation Report - Week 7 - 2021
IMST Situation Report - Week 5 - 2021
IMST Situation Report - Week 2 - 2021
2020
IMST Situation Report - Week 51 - 2020
IMST Situation Report - Week 48 - 2020
IMST Situation Report - Week 46 - 2020
IMST Situation Report - Week 44 - 2020
IMST Situation Report - Week 42 - 2020