A Missouri bird flu case first reported by the CDC in September has drawn national attention. The CDC released findings ...

A Missouri patient who tested positive for the H5N1 virus alerted health officials in August, launching an investigation.

"Genetic sequencing of nine of these cases confirms that all are H5N1 viruses from clade 2.3. ... The source of infection for one patient in Missouri has still not been identified.

However, there was some reassuring news from Missouri: No evidence that H5N1 had passed person-to-person. Regarding the household contact of the original hospital patient, the investigation has ...