If the C.D.C. agrees, adults who received a second shot of the Pfizer or Moderna vaccine at least six months ago could be eligible by this weekend.If the C.D.C. agrees, adults who received a second shot of the Pfizer or Moderna vaccine at least six months ago could be eligible by this weekend.Food and Drug Administration, Vaccination and Immunization, Coronavirus (2019-nCoV), United States Politics and Government, Drugs (Pharmaceuticals), Moderna Inc, Pfizer IncRead More