As of January 2023, more than 58 million birds in 47 states have been killed due to avian flu outbreaks. The egg shortage began amidst a series of mysterious fires and other disasters at U.S. food processors. Some farmers have stated chicken feed made by Purina may have been altered to contain lower amounts of protein and minerals, leaving chickens unable to lay eggs. A report from the Rockefeller Foundation, released in July 2020 and predicting a coming food crisis, calls for the creation of a centralized "nutrition security system."