Novel Type 1 and Type 3 Live Attenuated Oral Poliovirus Vaccines Show Comparable Safety, Immunogenicity, and Shedding to Sabin mOPV in First‑in‑Human Phase 1 Trial

Novel Type 1 and Type 3 Live Attenuated Oral Poliovirus Vaccines Show Comparable Safety, Immunogenicity, and Shedding to Sabin mOPV in First‑in‑Human Phase 1 Trial

A multicentre phase 1 trial in healthy US adults found nOPV1 and nOPV3 were well tolerated and induced robust homotypic neutralising antibody responses with shedding profiles similar to Sabin monovalent OPV, supporting progression to phase 2 studies.