Status: affected by circulating vaccine-derived poliovirus type 2 (cVDPV2)
Polio this week in Chad
- Seven cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported; one each in Mandoul, Chari Baguirmi and N’Djamena and two each in Batha and Guera. There are 34 cVDPV2 cases reported in 2022.
- One positive environmental sample was reported in Logone Occidental.
International Health Regulations
Chad is classified by the International Health Regulations (IHR) as a state infected with cVDPV2, with or without evidence of local transmission. It is therefore subject to temporary recommendations (issued as of January 2023).
WHO’s International Travel and Health recommends that all travellers to polio-affected areas be fully vaccinated against polio. Residents (and visitors for more than 4 weeks) from infected areas should receive an additional dose of OPV or inactivated polio vaccine (IPV) within 4 weeks to 12 months of travel.