Sheila Mulrooney Eldred, NPR
Even as case rates are plunging in some areas, multi-layered strategies are still necessary.
Last winter the number of flu cases was pretty low — likely a result of COVID precautions people were taking. Does that mean we have fewer antibodies and a greater risk of catching something now?
With Tuesday's announcement that some vaccinated people should mask up again in certain situations because of the spread of the highly contagious delta variant, you might be confused about whether you need to mask up again.