— UPDATE October 22, 2021 — Keeler Family Farms, based in Deming, New Mexico, also issued a voluntary recall for red, yellow and white onions imported from Chihuahua, Mexico and shipped from July 1 through August 25. Thus far no onions from Keeler Family Farms have tested positive for Salmonella.

— END UPDATE —

The source of the fast-growing Salmonella outbreak reported late last month has been identified: Fresh whole red, white and yellow onions imported from Chihuahua, Mexico and distributed by Illinois-based ProSource Inc.

Since late last month, the outbreak has grown from 29 to 37 states (However, the products were distributed nationwide), and from 280 to 652 reported illnesses. According to the CDC, the last of the onions were imported into the United States on August 27 (note, the import date ran from July 1 until August 27). However, businesses and consumers keep onions in storage for up to three months.

Illness subclusters have been linked to restaurants and food service locations. FDA is currently working to determine if these onions have also been distributed to customers via grocery stores. The agency is also continuing to traceback investigations to determine whether more products or suppliers have been affected by the contamination.

“ProSource Inc. has agreed to voluntarily recall red, yellow, and white onions imported from the State of Chihuahua, MX, with import dates from July 1, 2021 through August 27, 2021. Descriptions of these onion types include, but are not limited to, jumbo, colossal, medium, and sweet onions. Additional recall information will be made public as soon as it is available from ProSource Inc.,” according to recall information posted on FDA’s website.

Currently no deaths have been reported, but 129 people have been hospitalized. The last illness onset recorded was September 30.