Federal health officials say 106 passengers and six crewmembers aboard the Celebrity Infinity cruise ship were sickened by the gastrointestinal illness norovirus.
San Mateo County health officials have determined a norovirus outbreak caused more than 50 people at a Redwood City hotel to fall ill last month.
Thirty-seven passengers aboard the Crown Princess cruise ship, that docked in San Francisco on Monday, have contracted the stomach flu, a spokeswoman for Princess Cruises said.
A Concord deli reopened Thursday morning after a county health department ordered it closed for 24 hours when about 45 people caught the norovirus spread by employees, the director of the Contra Costa County Department of Environmental Health said.
On Friday, more than 100 students were absent from Burton Valley Elementary School—more than four times the normal absence rate, Lafayette School District Superintendent Fred Brill said.
Marin County officials say two elderly residents have died following an outbreak of a gastrointestinal virus that sickened nearly 60 people at a senior care center.
Most of the students who have fallen ill attend Ocean Shore Elementary School, and there have been a few cases at Ortega Elementary School since the bug first surfaced on May 8, said Superintendent Wendy Tukloff.
A Monterey-area middle school sent 113 students home after a suspected norovirus outbreak, and county health officials are investigating the cause.
In the last two months, nearly 30 schools in Contra Costa County have seen outbreaks of the stomach virus this winter.
A norovirus outbreak at a Novato nursing home is waning and Marin County public health officials expect it to reopen to visitors Wednesday night.