"Flu is everywhere in the U.S. right now," Dr. Daniel Jernigan, director of the U.S. Centers for Disease Control and Prevention's influenza division, said during a media briefing Friday. On a map of the United States tracking flu activity, "this is the first year that we have had the entire continental U.S. be the same color," he noted.
The flu has reached epidemic proportions in seven of the 10 regions in the country, according to Lynnette Brammer, an epidemiologist in the U.S. Centers for Disease Control and Prevention's influen
Researchers examined data from all the 2.28 million people aged 30 and younger in Norway between June 2009, when pandemic H1N1 flu struck the country, and June 2014.
But it's not just shot-avoidance that prevents people from getting the recommended vaccine. Researchers found that up to half of all Americans are fickle about the flu shot and change their minds about getting vaccinated from one year to the next.