NBC Los Angeles51m
Flu season in the US is the most intense it's been in at least 15 years
The U.S. winter virus season is in full force, and by one measure is the most intense in about 15 years. One indicator of flu ...
New bird flu variant found in Nevada dairy cows has experts sounding alarms: ‘We have never been closer to a pandemic from this virus’
Dairy herds in Nevada have been infected by a version of the H5N1 bird flu not previously seen in cows, putting virologists ...