A nasty intestinal bug sickens nearly twice as many Americans each year as was previously thought, according to the largest U.S. study to look at the problem.
An Alexandria school will be closed Friday after reports of a likely outbreak of a stomach virus that left hundreds of students and staff members sick.
The Virginia Department of Health says statewide surveillance data show that the stomach flu is arriving just in time for the holidays.
The Centers for Disease Control and Prevention says some Texas cases in a severe stomach bug outbreak last summer have been linked to Mexican cilantro.
State and federal investigators are trying to figure out the source of a stomach bug that has sickened 372 people in 15 states.