Pfizer says RSV vaccine is effective at preventing severe illness in babies

(The Hill) -- Pfizer on Tuesday announced its maternal vaccine for RSV, administered during pregnancy, was effective at preventing infants from developing severe symptoms from birth through their first six months.The company said that it plans to file the data on the vaccine with regulators by the end of the year, with the hope of having it available by next winter. If authorized, it would be the first vaccine on the market to help protect young infants from the common but potentially life-threa