Status: affected by circulating vaccine-derived poliovirus type 2 (cVDPV2)
Polio this week in Chad
- No case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was reported this week. There were three cVDPV2 cases in 2019 linked to the Jigawa outbreak in Nigeria.
- The risk of further cVDPV2 spread across the Lake Chad subregion remains high.
- Read our Chad country page for more information.
International Health Regulations
Countries affected by poliovirus transmission are subject to International Health Regulations Temporary Recommendations that request them to declare a case of polio as a national public health emergency and consideration vaccination of all international travellers, as per temporary recommendations issued as of December 2019.
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.