There is no such thing as which one is better between Bio and Kexing, just vaccinate according to the actual situation. The so-called biological and Kexing vaccines mainly refer to Beijing Biological and Beijing Kexing’s neocoronavirus vaccines, which are the main neocoronavirus vaccines currently used in China. Both vaccines belong to the inactivated vaccine of New Crown virus and have the same technical route, so there is not much difference in terms of adverse reactions and expected effects. Only the production company is different, the name of the product is different, the actual vaccination effect is almost the same. Therefore, there is no need to be overly obsessed about which vaccine you have received. Depending on the availability of vaccines in your area and the convenience of vaccination, you can choose the vaccine that is more convenient to receive.