Status: affected by circulating vaccine-derived poliovirus 2 (cVDPV2)
Polio this week in Angola
- Seven cases of cVDPV2 were reported this week: One each from Cangandala in Malange province, Londuimbale in Huambo province and in Moxico province. In Luanda province, two cases were reported in Kilamba Kiaxi and one each from Viana and Cucuaco. The onsets of paralysis were between 02 August and 17 September 2019. There are now a total of 36 cVDPV2 cases from seven outbreaks reported in 2019.
- One cVDPV2 positive environmental sample was reported in Cazenga, Luanda province. The sample was collected on 10 September 2019.
- Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.
- Read our Angola country page for more information.
WHO risk assessment
WHO assesses the risk of international spread of cVDPV2 across Africa to be high.
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.
International Health Regulations
Angola is classified by the International Health Regulations (IHR) as a state infected with cVDPV2, with potential risk of international spread. It is therefore subject to temporary recommendations as of September 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.