Status: affected by circulating vaccine-derived poliovirus
Polio this week in Zambia
- No circulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental samples were reported this week. There are 3 positive samples reported in 2022.
International Health Regulations
Countries affected by poliovirus circulation are subject to temporary recommendations issued by the Emergency Committee of the International Health Regulations on Poliovirus, under the auspices of the Public Health Emergency of International Concern. The latest report by the Committee is as of 1 November 2022.
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.