More than 100 people have fallen ill after eating bacteria-tainted oysters from Galveston Bay, and more cases are expected, state officials said.

Doug McBride, a spokesman for the Texas Department of Health, said Monday that 89 people in Texas and 18 in Florida were sickened by raw Galveston Bay oysters.The total number was more than double that recorded on Friday, after health officials issued bulletins that the oysters were tainted by a bacterium called Vibrio parahaemolyticus.