The influenza virus that’s sickened millions of Americans this season is already the most widespread outbreak since public health authorities began keeping track more than a dozen years ago. Now, with the threat of more strains emerging, it might get even worse. “Flu is everywhere in the U.S. right now,” said Dan Jernigan, director of the influenza division at the national Center for Immunization and Respiratory Diseases. “This is the first year we have had the entire continental U.S. be the same color on the graph, meaning there is widespread activity in all of the continental U.S. at this point.”

The most optimistic assumption among government experts is that the season peaked a few weeks ago, marking the apex of what was already an early and severe outbreak. However, such an outlook requires observers to ignore that outpatient doctor visits have continued to climb (albeit more slowly) in the first week of 2018, yielding the most flu cases ever for this time of the year. READ MORE