The Salmonella outbreak that began in late July has continued to spread across Canada.

In an update from Health Canada on Friday, the agency announced that a total of 339 people have thus far contracted Salmonella Newport, up from 120 people on August 2.

See also: Red, yellow, white onions recalled across Canada due to possible Salmonella contamination

The Canadian Food Inspection Agency (CFIA) has thus far recalled a variety of onions that are believed to be infected, along with a host of other products that contain onions as an ingredient.

According to the Public Health Agency, onions grown in Canada are not associated with this outbreak, but those imported from the U.S. are under investigation.

A full list of products can be found on the CFIA website.

Retailers, restaurants, and members of the public are advised not to serve, use, or sell, these products.

Anyone who has already consumed the recalled onions or related products and has fallen ill is advised to call their doctor.

The agency warns that food contaminated by Salmonella may not look or smell spoiled but can still make you sick.

Young children, pregnant women, the elderly and people with weakened immune systems may contract serious and sometimes deadly infections. Healthy people may experience short-term symptoms such as fever, headache, vomiting, nausea, abdominal cramps and diarrhea. Long-term complications include severe arthritis.

Additional recalls could follow as the CFIA continues its investigation into other possible importers.