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COVID-19 variants called FLiRT are spreading across US

The COVID-19 variants, nicknamed FLiRT, account for about one in four infections. Here's what to know.

United-states , Meganl-ranney , Centers-for-disease , Advisory-committee-on-immunization , Yale-school-of-public-health , Disease-control , Yale-school , Public-health , Visible-under-microscope , That-encircle-the , Getty-images

COVID-19 variants called FLiRT are spreading across US

The COVID-19 variants, nicknamed FLiRT, account for about one in four infections. Here's what to know.

United-states , Meganl-ranney , Yale-school-of-public-health , Centers-for-disease , Advisory-committee-on-immunization , Disease-control , Yale-school , Public-health , Visible-under-microscope , That-encircle-the , Getty-images