The booster dose of the new crown vaccine is usually the same as the original dose. At present, the most widely used New Crown vaccine is the inactivated New Crown vaccine, which requires two basic injections as well as a booster injection; the adenovirus carrier vaccine requires a bout of basic immunization as well as a second booster injection. There is no significant difference between the booster and the primary vaccination, and the dosage is the same. Clinical observations have shown that after six months of vaccination, the efficiency of the vaccine begins to deteriorate, so a booster injection is required to reinforce the immunization effect. The booster injection can stimulate the body to produce antibodies, which can maintain a higher titer and produce antibodies for a longer period of time to fight against viral infections. If you are physically able to do so, it is recommended that you receive a booster shot to better prevent infection with the New Crown virus.