Viruses with variants aren’t anything new. The COVID-19 variants are a concern because some of them are more contagious, more deadly, and may lead to vaccine failures.
flu vaccine strains
While it is too early to tell if this year’s flu season will be any deadlier than others, it isn’t too late to get a flu shot and get protected.
How well is this year’s flu vaccine working?
Reports of a flu shot fail have been greatly exaggerated…