Kenya

Status: no longer poliovirus-infected, but at high risk of outbreaks

Polio this week in Horn of Africa

  • Two cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported in Ethiopia this week: one each from Somali and Oromiya provinces. The onsets of paralysis were between 24 July and 09 September 2019. There are total five cVDPV2 cases reported in Ethiopia in 2019, four of them are linked to the outbreak in neighbouring Somalia and fifth case is part of a newly reported Ethiopian outbreak this week.
  • Somalia has reported a total of 15 cVDPV cases (eight type 2, six type 3 and one coinfection of both type 2 and type 3) since the beginning of the outbreaks.  The most recent cVDPV3 virus was from an AFP case from Runingod district, Middle Shabelle province with an onset date of paralysis on 7 September 2018.  Circulating VDPV2 has also been detected during 2018 in one environmental sample in Kenya collected on 21 March 2018.
  • Learn more about vaccine-derived polioviruses through this short animation or this ‘Coffee with Polio Experts’ video.

International Health Regulations

Kenya is classified by the International Health Regulations (IHR) as a state vulnerable to re-infection by WPV or cVDPV, with potential risk of international spread. It is therefore subject to temporary recommendations as of September 2019.

Travel advice

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.

More on vaccine-derived polioviruses