The puzzling halt in reported human bird flu cases has prompted health officials to renew calls for vigilance, even as experts grapple with several theories about the sudden drop.
While officials urge continued caution, questions linger about potential contributing factors, including the impact of government cuts on case detection, increased fear among immigrant farm workers – a demographic disproportionately affected by the virus – of seeking testing due to immigration enforcement concerns, and the possibility of a natural decline in infections.
