The CDC is advising that anyone who has bought onions from Thomson International, Inc - including red, white, yellow and sweet onions - refrain from eating, serving, or selling them.
The Food and Drug Administration said in a statement on Friday that Thomson International Inc. of Bakersfield, Calif., has notified the food agency that it will be recalling all varieties of onions that could have come in contact with potentially contaminated red onions because of the risk of cross-contamination.
Dozens of Salmonella cases in the state of Oregon have been traced back to red onions produced by a California company, according to the Oregon Health Authority.
A red onion salmonella outbreak has been identified by Health Canada. If the packaging or sticker shows the onions are from the USA, throw them away or don't buy them, and wash your hands, according to the health agency.
If you have any that are from the United States, or aren't labelled at all, you should throw them away and wash your hands after handling them. If you are unsure of the identity of red onions in your possession, check with your place of purchase. The alert added that 59 people have been hospitalized and no deaths have been reported.
And the FDA suggests thorough cleaning and sanitising of any cutting boards, surfaces and containers that may have come in contact with the products to reduce the risk of cross-contamination.
In total, as of July 30, 114 people in B.C., Alberta, Manitoba, Ontario and P.E.I have been affected by the Salmonella Newport outbreak.
Salmonella bacteria are found naturally in the intestines of animals, reptiles and birds, according to PHAC, and are most often transmitted to people when they eat contaminated foods. Symptoms usually start within 6 hours to 6 days after infection and last 4-7 days, according to the CDC.
Most people recover without treatment, but in some cases antibiotics may be required. Infants, elderly people and those with weakened immune systems are more likely to develop severe illness, OHA said.