Protection conferred through vaccination of the pregnant pt will likely wane after 3mo However because vaccination at 32 36 wk gestation is recommended only from Sept to Jan in most of the continental U S most infants of pts vaccinated during pregnancy wi

Protection conferred through vaccination of the pregnant pt will likely wane after 3mo. However, because vaccination at 32-36 wk gestation is recommended only from Sept. to Jan. in most of the continental U.S., most infants of pts vaccinated during pregnancy will be born during an RSV season. Parents of most infants born outside of RSV season (i.e., Apr.-Sept.) will not have been vaccinated; therefore, nirsevimab is recommended for these infants at the onset of the RSV season if they’re <8 mo.