
By BY KATHERINE J. WU from NYT Health https://ift.tt/3mKjAir



Every 1 point increase in the effort to discredit vaccines is linked to an average 2% drop in annual vaccine coverage around the world, and a 15% increase in negative tweets about vaccination, researchers found.
Because a high percentage of them have no symptoms when they are infected, they could become sources of future spread, the researchers said.