Add Yahoo as a preferred source to see more of our stories on Google. The number of Americans who see the vaccines for Covid, measles and flu as safe is falling, according to a new report from the University of Pennsylvania's Annenberg Public Policy Center.

Add Yahoo as a preferred source to see more of our stories on Google. By Chad Terhune and Julie Steenhuysen SPARTANBURG, South Carolina/CHICAGO, Feb 4 (Reuters) - Measles vaccinations have doubled in recent months in a South Carolina region hit hard by the disease's worst outbreak in the U.