22 Oct 2021 For the 2020-2021 flu season, all four flu viruses used in the Flucelvax Quadrivalent are cell-derived, making the vaccine egg-free. Flucelvax Quadrivalent는 달걀을 이용해서 만들지 않고 4가지 플루예방 하는 데 쓴다 by drlee_admin | posted in: Uncategorized | 0 For the 2020-2021 flu season, all four flu viruses used in the Flucelvax Quadrivalent are cell-derived, making the vaccine egg-free. Flucelvax Quadrivalent는 달걀을 이용해서 만들지 않고 4가지 플루예방 하는 데 쓴다