The World Health Organization (WHO) reported Friday that three vaccine-derived poliovirus type 2 (cVDPV2) strains were isolated from environmental samples collected on 4 and 11 January 2018, in Banadir province (Mogadishu).
These latest isolates are genetically linked to cVDPV2 strains collected from environmental samples in the same province on 22 October and 2 November 2017.
Since detection of the initial isolates in 2017, two large-scale immunization campaigns (SIA) in line with internationally-agreed guidelines have been implemented, in Banadir, Lower Shabelle and Middle Shabelle provinces.
A third SIA is planned for March 2018, and further response based on evolving epidemiology and ongoing risk assessment is being evaluated. Surveillance for AFP is being strengthened.
WHO and its partners are continuing to support local public health authorities in conducting field investigations and risk assessments to more clearly assess risk of the identified cVDPV2.
No associated cases of acute flaccid paralysis (AFP) have been detected.