heavier than those testing negative.
SMAM-1 was the first chicken virus to be associated with human obesity, but not the last. The original obesity-causing chicken virus SMAM-1 was
able to effectively transmit obesity from one chicken to another when caged together, similar to a human adenovirus Ad-36, a human obesity-associated virus first..."
http://nutritionfacts.org/2016/06/07/virus-in-chicken-could-be-linked-to-obesity/