Infectious disease experts are raising alarms about the potential for an especially severe flu season this year, according to STAT news.

…Flu experts are a bit worried right now. There are some signals they think may foretell that we’re facing a nasty flu season. But they hand-to-heart don’t know whether the constellation of things that is worrying them will lead to clogged doctors offices.

Experts are watching three predictive factors:

  1. The Southern Hemisphere had a nasty flu season
  2. The flu vaccine is probably not an optimal match
  3. The repeat vaccination problem