An investigation report into a Salmonella Thompson outbreak shows additional patients and ongoing efforts by the Food and Drug Administration to find the source, though virtually no details have been released.

The Salmonella Thompson outbreak now has 83 people confirmed with infections, up from 78 people a week ago. The FDA is continuing traceback efforts, although the agency has not reported what food or foods it is tracking. The agency also continues with onsite inspections at unnamed locations and testing of unnamed samples.

In another ongoing investigation, into an outbreak of infections from Salmonella Oranienburg that has sickened at least 278 across 29 states, the FDA has begun traceback efforts, but the agency has not revealed what food or foods it is tracking. The agency also reports that it is testing “samples” but has not revealed what those samples are. 

The table below shows ongoing outbreak investigations being managed by FDA’s CORE Response Teams. The investigations are in a variety of stages. Some outbreaks have limited information with active investigations ongoing, others may be near completion or concluded. The table below has been abbreviated to show only active investigations.

The Food and Drug Administration will issue public health advisories for outbreak investigations that result in “specific, actionable steps for consumers — such as throwing out or avoiding specific foods — to take to protect themselves,” according to the outbreak table page.

Not all recalls and alerts result in an outbreak of foodborne illness. Not all outbreaks result in recalls.

Outbreak investigations that do not result in specific, actionable steps for consumers may or may not conclusively identify a source or reveal any contributing factors, according to CORE’s outbreak table page. If a source(s) and/or contributing factors are identified that could inform future prevention, FDA commits to providing a summary of those findings, according to CORE officials. Click here to visit the FDA page that has a complete list of outbreak investigations and links to outbreak information.

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