(CNN)At least 92 people in 29 states have been infected with a strain of multidrug-resistantsalmonella after coming into contact with a variety of raw chicken products, the US Centers for Disease Control and Prevention said Wednesday. Twenty-one of the sick patients have been hospitalized, though no deaths have been reported.The source of the raw chicken is unclear from lab tests, and no single common supplier has been identified. The strain has shown up in samples from a variety of raw chicken products including pet food, chicken pieces, ground pieces and whole chickens. The bacteria have also been found in live chickens. The US Department of Agriculture’s Food Safety and Inspection Service is monitoring the outbreak, and the CDC’s investigation is ongoing.