Uncooked chicken

So Wednesday the 6th june decided to get my bf KFC street wise 2.. leg and wing.... for the last 4days he has been vomiting and has had a runny stomach. Last substance that was eaten was the "chicken" ... since after eaten the chicken has not been able to stomach anything else.. he did complain that the chicken was not done right and didnt dinish but ate enough to make him sick. Please investigate this matter urgently..