The TWiV team reveals that recent mumps virus outbreaks in the US are due to waning vaccine efficacy, and an intranasally delivered small interfering RNA that controls West Nile infection in the brain.
The TWiV team takes on an experimental plant-based poliovirus vaccine, contradictory findings on the efficacy of Flumist, waning protection conferred by Zostavax, a new adjuvanted subunit zoster vaccine.