Outbreaks and Investigations
Below is a list of selected outbreaks and investigations with wide impact in Wisconsin.
COVID-19 (Coronavirus Disease 2019)
Wisconsin Investigation Details
We plan to update our data daily by 2 p.m.
We are closely monitoring COVID-19 with officials at local, state, and federal levels.
COVID-19 continues to be very contagious. We should continue to limit our interactions with others as much as possible to protect ourselves, our communities, and the capacity of our health care system.
- Get vaccinated against COVID-19.
- Practice physical distancing of 6 feet.
- Wear a mask.
- Wash your hands frequently, and avoid touching your face.
- Enjoy the weather by getting outside, but make sure to do it safely.
- If you have symptoms or have been exposed to COVID-19, get tested.
You are not alone. We are in this together. Do not hesitate to ask for help.
Multistate Outbreak of Salmonella Infections Linked to Peaches
The Wisconsin Department of Health Services (DHS) is working with local health departments, the Centers for Disease Control and Prevention (CDC), and the U.S. Food and Drug Administration (FDA) to investigate a multistate outbreak of Salmonella Enteritidis infections linked to peaches.
- As of August 27, 2020, CDC reports 78 people in 12 states are infected with the outbreak strain of Salmonella Enteritidis. Twenty-three people have been hospitalized and no deaths have been reported.
- Wisconsin has five laboratory-confirmed cases linked to this outbreak. One has been hospitalized.
Epidemiologic evidence indicates that peaches are a likely source of this outbreak.
- On August 25, 2020, Russ Davis Wholesale recalled peach salsa and gift baskets made with recalled Prima Wawona peaches. Recalled peach salsa was sold under 3 brand names and labeled as “Perfectly Peach Salsa.”
- On August 22, 2020, Prima Wawona recalled all its bulk/loose peaches distributed and sold from June 1 through August 3.
- On August 21, 2020, Wawona Packing Company LLC recalled bagged peaches that were sold under several brand names at a variety of stores in multiple states. Recalled bagged peaches were distributed and sold from June 1 through August 19.
- On August 19, 2020, Target recalled multiple varieties of fresh peaches and removed them from their U.S. stores.
- ALDI voluntarily recalled peaches and removed them from their store shelves in multiple states on August 19, 2020.
- This investigation is ongoing to determine the source of contamination and to identify other retailers that might have sold contaminated peaches.
DHS, CDC, and FDA are advising people not to eat, serve, or sell any recalled peaches packed or supplied by Wawona Packing Company, LLC.
- The recalled peaches were sold at different stores under various brand names. Peaches were sold in bags and individually.
- Recalled peaches sold in bags include the following brand names and product codes:
- Wawona Peaches – 033383322001
- Wawona Organic Peaches – 849315000400
- Prima® Peaches – 766342325903
- Organic Marketside Peaches – 849315000400
- Kroger Peaches – 011110181749
- Wegmans Peaches – 077890490488
- Recalled bulk/loose peaches were sold in grocery stores in a variety of formats, typically bins where consumers selected their own fruit and may have the following stickers with PLU numbers on them: 4037, 4038, 4044, 4401, 94037, 94038, 94044, 94401.
- The items were also available for purchase through Instacart, a grocery delivery service.
- If you have any of the recalled peaches throw the peaches away, even if some of them were eaten and no one has gotten sick.
This investigation is ongoing. Wisconsin DHS will continue to provide updates as information becomes available.
See our salmonellosis page for more information on common symptoms and treatment of salmonellosis. If you have any symptoms of salmonellosis, please contact your doctor.
Additional information can be found on the following websites:
- CDC: Outbreak of Salmonella Enteritidis Infections Linked to Peaches
- FDA: Russ Davis Wholesale Recalls Peaches and Peach Salsa Because of Possible Health Risk
- FDA: Prima® Wawona Recalls Bulk/Loose and Bagged Peaches Due to Possible Salmonella Risk
- Target product recalls
- ALDI Voluntarily Recalls Assorted Peaches from Wawona Packing Company LLC Due to Possible Salmonella Enteritidis Contamination
Multistate Outbreak of Salmonella Infections Linked to Onions
The Wisconsin Department of Health Services (DHS) and local health departments are working with the Centers for Disease Control and Prevention (CDC) and the U.S. Food and Drug Administration (FDA) to investigate a multistate outbreak of Salmonella Newport infections linked to the consumption of onions.
- As of August 7, 2020, CDC reports that 640 people in 43 states have been infected with the outbreak strain of Salmonella Newport. There have been 85 people hospitalized and no deaths.
- Wisconsin has seven laboratory-confirmed cases linked to this outbreak. Two have been hospitalized.
DHS, CDC, and FDA are advising people not to eat, sell, or serve any onions from Thomson International, Inc., or food made with these onions. Recalled onion types include red, white, yellow, and sweet varieties. Other companies have also issued recalls of foods, like chicken salads, made with recalled onions. If you cannot tell where your onions are from, do not eat, sell, or serve them. Throw them away.
- On August 1, 2020, Thomson International, Inc., recalled red, yellow, white and sweet yellow onions because they may be contaminated with Salmonella.
- Recalled onions were distributed to retail stores, restaurants, and wholesalers in all 50 states and the District of Columbia.
- Onions were distributed in bulk cartons and mesh sacks ranging from 2 to 50 pounds under these brand names: Thomson Premium, TLC Thomson International, Tender Loving Care, El Competitor, Hartley’s Best, Onions 52, Majestic, Imperial Fresh, Kroger, Utah Onions, and Food Lion.
- See the recall notice to check for universal product codes (UPC) and pictures of the products.
- August 1, 2020, Giant Eagle recalled onions and prepared foods made with recalled onions sold in stores across Pennsylvania, Ohio, West Virginia, Indiana, and Maryland.
- On August 1, 2020, Publix recalled red onions sold in bulk at stores in Alabama, Georgia, North Carolina, South Carolina, Tennessee, and Virginia.
- On August 5, 2020, the United States of Agriculture’s Food Safety and Inspection Service (USDA-FSIS) issued a public health alert for products made with recalled onions. Check the alert for details.
- On August 6, 2020, Taylor Farms issued a recall of foods that were made from recalled onions. Check the posting for details.
- Wash and sanitize any surfaces that may have come in contact with onions or their packaging, such as countertops, refrigerator drawers, knives, and cutting boards.
Epidemiologic and trackback information shows that red onions are a likely source of this outbreak.
- Thomson International, Inc., of Bakersfield, CA, has been identified as a likely source of potentially contaminated red onions.
- Additional traceback is ongoing to determine if other onions are linked to the outbreak.
This investigation is ongoing and Wisconsin DHS will provide updates when they are available.
See our salmonellosis page for information about common symptoms and treatment of Salmonella infection. If you have any symptoms of salmonellosis, see your doctor.
Additional information can be found on the following websites:
Multistate Outbreak of Cyclospora Infections Linked to Bagged Salad Mix
The Wisconsin Department of Health Services (DHS), the Wisconsin Department of Agriculture, Trade, and Consumer Protection (DATCP), and local health departments continue to work with the Centers for Disease Control and Prevention (CDC) and the U.S. Food and Drug Administration (FDA) to investigate a multistate outbreak of cyclosporiasis infections linked to the consumption of bagged salad mix containing iceberg lettuce, carrots, and red cabbage produced by Fresh Express.
As of July 24, 2020, a total of 641 people with laboratory-confirmed Cyclospora infections associated with this outbreak have been reported from 11 states. 37 people have been hospitalized and no deaths have been reported.
Wisconsin has 36 confirmed cases linked to this outbreak. None have been hospitalized.
Epidemiologic and trackback evidence indicates that bagged salad mix containing iceberg lettuce, carrots, and red cabbage produced by Fresh Express is a likely source of this outbreak.
- The Public Health Agency of Canada is investigating an outbreak of Cyclospora infections occurring in 3 Canadian provinces. Exposure to certain Fresh Express salad products containing iceberg, red cabbage, and carrots is the likely source of their outbreak.
- On June 27, 2020, Fresh Express recalled products containing either iceberg lettuce, red cabbage, or carrots and displaying the product code Z178 or a lower number.
- On June 25, 2020, Fresh Express recalled 12- and 24-ounce bagged Walmart Marketside Classic Iceberg Salad, sold in Walmart stores.
- On June 22, 2020, ALDI recalled 12-ounce bagged Little Salad Bar Garden Salad produced by Fresh Express.
- On June 20, 2020, Hy-Vee issued a recall for Hy-Vee brand 12-ounce bagged Garden Salad produced by Fresh Express.
- Evidence shows that Jewel-Osco brand Signature Farms Brand Garden Salad may be another source of this outbreak, but this product was not distributed to stores in Wisconsin. Jewel-Osco, in cooperation with Fresh Express, has recalled this product due to the association with illnesses in other Midwestern states.
DHS, the CDC, and FDA are advising people not to eat, sell, or serve any products that have been recalled for potential Cyclospora contamination.
The recalled products have use-by dates through July 14, 2020 and may still be in people’s homes. A full list can be found here.
- Check your home for any of these salad products. Throw any remaining salad away, even if some of it has been eaten and no one has gotten sick.
- If you live in Wisconsin and don’t know whether the bagged garden salad blend you have in your home is one of these salad products, don’t eat it and throw it away.
This investigation is ongoing and additional retailers and products may be impacted by this outbreak. Wisconsin DHS will continue to provide updates as information becomes available.
See our cyclosporiasis fact sheet for more information on common symptoms and treatment of cyclosporiasis. If you have any symptoms of cyclosporiasis, please contact your doctor.
Additional information can be found on the following websites:
Multistate Outbreak of Salmonella Infections Linked to Contact with Backyard Poultry
The Wisconsin Department of Health Services (DHS) and local health departments are working with the Centers for Disease Control and Prevention (CDC) to investigate multiple outbreaks of Salmonella infections linked to contact with backyard poultry.
- As of June 23, 2020, 465 people infected with one of the outbreak strains of Salmonella have been reported from 42 states. More than one-third (86 people) have been hospitalized and one death in Oklahoma has been reported.
- Children younger than 5 years of age account for about one-third of the illnesses.
- In Wisconsin, three laboratory-confirmed cases of Salmonella have been linked to this outbreak.
Outbreaks of Salmonella infections linked to contact with backyard poultry happen every year in the U.S. However, almost twice as many Salmonella infections linked to backyard poultry contact have been reported this year when compared to this time last year.
- Many of these infections can be prevented. Please follow these tips to stay healthy around backyard poultry.
- For more recommendations, please visit CDC’s Healthy Pets, Healthy People website section on backyard poultry.
More information about the 2020 outbreak and previous years’ live poultry-associated outbreaks can be found on the CDC website.
More information about backyard poultry can be found on the DHS Backyard Poultry webpage.
E-cigarette or Vaping Associated Lung Injury (EVALI)
Wisconsin Case Counts
As of January 11, 2021
More information about the e-cigarette or vaping associated lung injury can be found on the Vaping and Lung Injury Investigation webpage.
Media requests should go to the DHS media or 608-266-1683.
|Case Status||Number of Cases|
|Confirmed and Probable Cases*||119|
*Reporting the number of confirmed and probable cases of EVALI in Wisconsin during July 2019-current date.
To view previous outbreaks and investigations, please visit our Past Outbreaks in Wisconsin page.