RT Book, Section A1 Papadakis, Maxine A. A1 McPhee, Stephen J. A1 Rabow, Michael W. A1 McQuaid, Kenneth R. SR Print(0) ID 1193123799 T1 Viral & Rickettsial Infections Year in Review T2 Current Medical Diagnosis & Treatment 2023 YR 2023 FD 2023 PB McGraw-Hill Education PP New York, NY SN 9781264687343 LK accessmedicine.mhmedical.com/content.aspx?aid=1193123799 RD 2023/12/01 AB A novel oral polio vaccine type 2 (nOPV2) has been developed in response to the ongoing circulating vaccine-derived type 2 poliovirus outbreaks and has been shown to be safe and immunogenic in previously immunized adults. Studies have shown that nOPV2 is more genetically stable than the mOPV2 and therefore less prone to reverting to neurovirulence. The nOPV2 was recommended for initial use under the World Health Organization’s Emergency Use Listing Procedure in November 2020.