The US hasn't seen a human bird flu case in 3 months. Experts are wondering why
Health officials are urging vigilance as reports of bird flu cases in humans appear to have stopped. Experts are wondering why.
Reports & sources
NBC 5 Dallas-Fort Worth
The US hasn't seen a human bird flu case in 3 months. Experts are wondering why (opens NBC 5 Dallas-Fort Worth)NBC 5 Dallas-Fort Worth's feed description
CBS News
The Boston Globe
The US hasn’t seen a human bird flu case in three months. Experts are wondering why. (opens The Boston Globe)The Boston Globe's feed description