Oct. 25 (Bloomberg) -- Merck & Co.'s vaccine against rotavirus, which causes vomiting and diarrhea in thousands of children annually, worked so well it may have cut the spread to non-immunized children in the U.S., researchers said.
Oct. 25 (Bloomberg) -- Merck & Co.'s vaccine against rotavirus, which causes vomiting and diarrhea in thousands of children annually, worked so well it may have cut the spread to non-immunized children in the U.S., researchers said.
