Additional testing of retail dairy products found no live bird flu virus, supporting pasteurization's protective role. Cattle outbreak scale remains uncertain as herds aren't routinely tested.
Only one mild human infection traced to direct cow contact reported. Concerns exist over potential undetected cases among farm workers as testing has been limited.
Initial genetic fragments of the virus found in milk samples were later confirmed to pose no threat to consumers. Federal regulators tested more samples, finding no live virus.
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