1. Immunity and field efficacy of type 2-containing polio vaccines after cessation of trivalent oral polio vaccine: A population-based serological study in Pakistan. (7th August 2020) Authors: Voorman, Arie; Habib, Muhammad Atif; Hussain, Imtiaz; Muhammad Safdar, Rana; Ahmed, Jamal A.; Weldon, William C.; Ahmed, Imran; Umer, Muhammad; Partridge, Jeffrey; Soofi, Sajid Bashir Journal: Vaccine Issue: Volume 5(2020) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗