Quadrivalent Vaccine Reservation Official Website – Convenient and Fast Reservation Method As the COVID-19 epidemic rages on, virus prevention and control work has become more and more important. During this period, vaccination is generally regarded as one of the important measures. The quadrivalent vaccine is currently the most effective influenza vaccine and protects against four different influenza viruses. In order to facilitate the public to receive the quadrivalent vaccine, the government has launched