Vaccination against NCC is very important. On the one hand, almost all people are susceptible to NCCV, and most of them will become sick after infection and even develop critical illness or die, and vaccination against NCCV will allow the vast majority of people to gain immunity; on the other hand, by vaccinating against NCCV, an immune barrier can be established in the population to block the continuous spread of the virus and avoid a pandemic of NCCV. Until the population immune barrier is established, even if some of the population is vaccinated, the awareness of prevention and control and preventive and control measures should not be relaxed. Therefore, you should still continue to wear a mask after vaccination. Content source: Dr. Yurai