Current US hot spots are Utah, Arizona, and South Carolina.
Children born to an asthmatic parent and not hospitalized for RSV bronchiolitis were at nearly double the risk of asthma as those born to parents without asthma.
The analyses suggest 80% to 89% effectiveness in protecting infants against hospitalization and ICU admission.
Only 3 states report moderate levels of acute respiratory illnesses.
The transformation to having tools to prevent RSV happened so quickly that many haven't grasped its magnitude.
The rate was quadruple in those 75 and older, but those findings demonstrate less statistical power.
Vaccination was 82% effective against hospital admission for any RSV-related respiratory illness and 87% effective against admission for severe RSV.
The findings have implications for scheduling repeat dosing in eligible children, the authors say.
Our systematic review published this week shows that rigorous, transparent evidence synthesis can persist even when traditional advisory processes falter.
The large-scale project was conducted by the Center for Infectious Disease Research and Policy's Vaccine Integrity Project.
