New wild poliovirus isolates reported this week:
AFP cases: 0
Environment: 33
Others: 0
New cVDPV isolates reported this week:
AFP cases: 15
Environment: 12
Others: 0
Summary of new poliovirus cases and positive environmental samples:
Chad: three cVDPV2 cases and three cVDPV2 positive environmental samples
Djibouti: seven cVDPV2 positive environmental samples
Ethiopia: eleven cVDPV2 cases
Niger: one cVDPV2 case
Occupied Palestinian territory: one cVDPV2 positive environmental sample
Papua New Guinea: one cVDPV2 positive environmental sample
Afghanistan: No WPV1 cases and eight WPV1 positive environmental samples were reported this past week.
Pakistan: No WPV1 cases and twenty-five WPV1 positive environmental samples were reported this past week
Officially reported WPV1 and cVDPV cases as of (April 15, 2025):
Wild poliovirus (WPV)
Total global WPV1 cases in 2025: 7 (1 in Afghanistan and 6 in Pakistan)
Total global WPV1 cases in 2024: 99
Total global WPV1 cases in 2023: 12
Total global WPV1 cases in 2022: 30
Total global WPV1 cases in 2021: 6
Total global WPV1 cases in 2020: 140
Circulating vaccine-derived poliovirus (cVDPV) cases
Total global cVDPV cases in 2025: 34
Total global cVDPV cases in 2024: 310
Total global cVDPV cases in 2023: 528
Total global cVDPV cases in 2022: 878
Most recently reported WPV1 cases this year: January 27th in Afghanistan and February 11th in Pakistan.
World Immunization week is April 24th – April 30th. This is a critical time to raise awareness about the importance of immunization and the safety and effectiveness of vaccines. Find promotional materials here. Two R.I. conversations will be live streamed on Rotary’s Facebook, LinkedIn, and YouTube accounts (recordings will be available to watch afterwards):
Thursday, April 24th, 10:00 a.m. (Central) – A Conversation With Public Health Experts
Jessica Malaty Rivera, an infectious disease epidemiologist and award-winning science communicator, will lead a conversation with Stella Anyangwe, an End Polio Now coordinator and former World Health Organization representative, and Peter J. Hotez, Dean of the National School of Tropical Medicine and Professor of Pediatrics and Molecular Virology and Microbiology at Baylor College of Medicine.
Wednesday, April 30th at 10:00 a.m. (Central) – A Conversation With a Polio Survivor
Darla Silva, chief program officer at UNICEF USA, will talk with Ade Adepitan, a Paralympian, television presenter, and Team End Polio member.