Remnants of bird flu have been found in bovine milk and recently sampled in 20% of milk in grocery stores. So far, it’s been determined to just be “genetic material” - not live or infectious. Milk is pasteurized in the US so it’s reasonably safe to keep drinking. I don’t believe this would impact beef consumption, certainly not cooked beef.
Beth Mole at Ars Technica has been covering it arstechnica.com/author/beth/
The CDC is reporting at least one dairy worker has been infected www.cdc.gov/media/…/p0401-avian-flu.html