VANCOUVER, British Columbia, Sept. 24 (UPI) -- Seven Canadians were recovering from food poisoning after eating tainted tuna in sandwiches they bought at Vancouver's International Airport, officials said.
Six airport workers and one traveler all became sick around 3 p.m. Friday and were taken to a hospital after eating tuna sandwiches from a Subway restaurant, the Vancouver Sun reported.
Six were treated and released by 7 p.m., but the seventh was kept longer, the report said.
Regional health authority spokesman Justin Karasick told reporters an investigation was launched immediately and that early indications suggested the group suffered from "scombroid poisoning."
He said that occurs because of high levels of histamine in raw or undercooked fish.
"It's usually because the fish hasn't been stored at the right temperature," he said. "The good news is that the symptoms usually resolve on their own."
Symptoms include flushing, nausea, vomiting and headache and usually appear quickly after the food is eaten, the Canadian Broadcasting Corp. said.
The restaurant chain removed all tuna items from its menu at all three of its airport locations, the newspaper said.
