Status: affected by circulating vaccine-derived poliovirus type 1
Polio this week in Myanmar
- No circulating vaccine-derived poliovirus type 1 (cVDPV1) cases were reported this week. There are six reported cases of cVDPV1 in 2019.
- Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
- Read our Myanmar country page to see information on cases, surveillance and response to the developing outbreak.
WHO risk assessment
WHO currently assesses the risk of international spread of this confirmed cVDPV1 to be low.
International Health Regulations
Myanmar is classified by the International Health Regulations (IHR) as a state infected with cVDPV1, with potential risk of international spread. It is therefore subject to temporary recommendations as of September 2019.
It is important that all countries, in particular those with frequent travel and contacts with polio-affected countries and areas, strengthen surveillance for AFP cases in order to rapidly detect any new virus importation and to facilitate a rapid response. Countries, territories and areas should also maintain uniformly high routine immunization coverage at the district level to minimize the consequences of any new virus introduction.
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.