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Situation reports on vaccine-derived poliovirus type 2

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Key updates, 6 July 2018

  • Circulating vaccine-derived poliovirus type 2 (cVDPV2) and type 3 (cVDPV3) have been confirmed in Somalia. Two cases of cVDPV3 have been confirmed from Warsheikh district, Middle Shabelle Region, one case from Bulo Burti district, Hiran Region. The case from Hiran Region has been confirmed as having co-infection of vaccine-derived poliovirus type 2 (cVDPV2). 
  • The total number of cVDPV3 cases is three, one of which is co-infected with cVDPV2.
  • cVDPV3 has also been isolated from samples collected from one contact in Warsheikh district, Middle Shabelle, three contacts in Bulo Burti district, Hiran and two healthy children in Jamamme West, Lower Juba.
  • cVDPV2 has been isolated from a contact of an acute flaccid paralysis (AFP) case in IDP camp in Dolo district, Gedo Region.
  • Environmental surveillance continues to detect cVDPV2 and cVDPV3 in samples collected from three sites in Banadir (Mogadishu) region. cVDPV2 was first detected in Somalia in December 2017 in environmental samples collected from the same site in Waberi district on 22 October and 2 November. In March 2018, VDPV2 was detected in the environment in neighbouring Nairobi, Kenya.
  • Three large-scale immunization campaigns using monovalent oral polio vaccine (mOPV2) have been conducted in Banadir, Lower Shabelle and Middle Shabelle provinces since the initial detection of cVDPV2 isolates in December 2017. 
  • One round of inactivated polio vaccine (IPV) was conducted (alongside a targeted mOPV2 campaign) in Banadir, Lower Shabelle and Middle Shabelle reaching more than 270,000 children aged between 2-23 months.
  • Planning is underway for two additional mOPV2 immunization campaigns in response to the continued detection of cVDPV2, which will be synchronized with border areas of Kenya and Ethiopia. These additional rounds will be targeting 6 regions in south and central Somalia with a target population of 656,062 children under five.
  • One national campaign using bivalent oral polio vaccine (bOPV) was conducted in Somaliland, South Zone and Central Zone in May 2018 and planning is underway to cover Puntland and Banadir, Lower Shabelle and Middle Shabelle Regions in July 2018.
  • Two additional rounds of bOPV, also synchronized with Kenya and Somali regions of Ethiopia are planned for August and September 2018.   

Situation reports

Somalia VDPV2 bulletin, Issue 1, 10 December 2017

Key health-related statistics

Total population (000s)12 316
Maternal mortality ratio (per 100 000 live births) 732
Total life expectancy at birth (years) 55

Source: Country statistical profiles 2017

See Somalia country profile

Regional Health Observatory

Contact us

WHO Representative
WHO Liaison Office for Somalia in Nairobi
PO Box 63565