While there have been no illnesses reported, the issue would be that if the product is truly undercooked, pathogens such as Salmonella or Campylobacter could be present..
USDA Recall Notice
https://www.fsis.usda.gov/wps/wcm/connect/FSIS-Content/internet/main/topics/recalls-and-public-health-alerts/recall-case-archive/archive/2017/recall-037-2017-release
WFSP Foods LLC. Recalls Ready-To-Eat Chicken Breast Products That May Be Undercooked
Class I Recall 037-2017
Health Risk: High Apr 24, 2017
USDA Recall Notice
https://www.fsis.usda.gov/wps/wcm/connect/FSIS-Content/internet/main/topics/recalls-and-public-health-alerts/recall-case-archive/archive/2017/recall-037-2017-release
WFSP Foods LLC. Recalls Ready-To-Eat Chicken Breast Products That May Be Undercooked
Class I Recall 037-2017
Health Risk: High Apr 24, 2017