"This April, the USDA reported that a highly pathogenic case of H7N3 was found on a turkey farm in South Carolina and that it appeared to have mutated from a low pathogenic strain that had already been present in the area.
"'Luckily, it was H7N3, which the CDC says causes mild to moderate illness in humans. That’s the good news,” deCoriolis said. “But this is something that’s happening all the time. This is an ongoing emergency.'"
https://civileats.com/2020/05/29/industrial-meat-101-could-large-livestock-operations-cause-the-next-pandemic