Federal health regulators this week have warned of a norovirus outbreak linked to raw oysters across about a dozen U.S. states. Potentially tainted raw oysters harvested in British Columbia, Canada, were sent to California, Colorado, Florida, Hawaii, Illinois, Massachusetts, Minnesota, New Jersey, Nevada, New York, Oregon, Texas, and Washington, according to the U.S. Food and Drug Administration (FDA) on Wednesday. At least 91 norovirus cases have been reported in the 13 states, according to the U.S. Centers for Disease Control and Prevention. Many of those who were sickened said they ate raw oysters when interviewed by health officials, said the agency. On Tuesday, Washington state health officials said that 26 residents reported norovirus-like symptoms after eating oysters sourced from British Columbia in recent weeks. At least 29 Minnesota residents fell ill after allegedly eating raw oysters at  Travail Kitchen on March 20, according to reports. The restaurant has confirmed it stopped selling Stellar Bay …