POLIO [to 14 January 2017]
Public Health Emergency of International Concern (PHEIC)
Polio this week as of 11 January 2017
:: Summary of newly-reported viruses this week (see country-specific section below for further details): Pakistan: one circulating vaccine-derived poliovirus type 2 (cVDPV2) isolated from an acute flaccid paralysis (AFP) case; three positive environmental samples (two wild poliovirus type 1 – WPV1, and one cVDPV2).
Country Updates [Selected Excerpts]
:: Two new WPV1-positive environmental samples were reported in the past week, from Multan, Punjab (collected on 8 December) and Karachi-Landhi (greater Karachi), Sindh (collected on 14 December).
:: One new circulating vaccine-derived poliovirus type 2 (cVDPV2) case was reported in the past week, from Quetta, Balochistan, with onset of paralysis on 17 December.
:: One new cVDPV2-positive environmental sample was reported in the past week, from Quetta (collected on 20 December).
:: The isolates from both the cVDPV2 case and environmental sample are linked to an ongoing, confirmed cVDPV2 outbreak currently affecting Quetta. The case is the first associated with this outbreak – previous isolates of this strain had been found only in environmental samples.
:: An outbreak response is currently ongoing. Last week, a campaign using monovalent oral polio vaccine type 2 (mOPV2) was implemented in Quetta and surrounding areas, followed this week by an activity with inactivated polio vaccine (IPV). The Ministry of Health, supported by the World Health Organization (WHO) and partners, is further strengthening active search for cases of acute flaccid paralysis (AFP), and conducting an in-depth field investigation to more clearly ascertain the extent of circulation of the cVDPV2.