Population Immunity against Serotype-2 Poliomyelitis Leading up to the Global Withdrawal of the Oral Poliovirus Vaccine: Spatio-temporal Modelling of Surveillance Data.
Margarita Pons-SalortNatalie A MolodeckyKathleen M O'ReillyMufti Zubair WadoodRana M SafdarAndrew EtsanoRui Gama VazHamid JafariNicholas C GrasslyIsobel M BlakePublished in: PLoS medicine (2016)
Immunity against serotype-2 poliomyelitis was forecasted to improve in April 2016 compared to the first half of 2015 in Nigeria and Pakistan. These analyses informed the endorsement of OPV2 withdrawal in April 2016 by the WHO Strategic Advisory Group of Experts on Immunization.