A Canadian teen is in critical condition with a suspected case of bird flu, the first known locally acquired infection in the country's history. The source is likely an animal or bird, and there's no evidence of person-to-person spread. H5N1 has become a persistent threat in North America, with 46 confirmed human cases in the U.S. as of Nov. 8. A CDC study revealed that 7% of farm workers exposed to infected dairy cattle had bird flu antibodies. The CDC recommends active monitoring, testing, and expanded access to PPE for farm workers. **Don't panic, but it's clear we need to take action to prevent unnecessary deaths and human-to-human transmission.