The White House chief medical adviser said he feared that the so-called Delta variant, B1.617.2, could overtake the highly contagious UK variant, known as B117, in the country — an alarming prospect we should prevent.
The White House chief medical adviser said he feared that the so-called Delta variant, B1.617.2, could overtake the highly contagious UK variant, known as B117, in the country — an alarming prospect we should prevent.
