How many days after the second shot of COVID-19 vaccine, can you get the second shot of COVID-19 vaccine after 50 days

How many days after the second dose of COVID-19 vaccine

At present, the new coronavirus vaccine is inoculated, and two doses of vaccine are inoculated, usually referring to the inactivated new coronavirus vaccine. The interval between the first and second doses should be at least three weeks. The second dose can be completed as soon as possible within 8 weeks after the first dose of vaccination, and should be administered according to this time period. This is most conducive to the production of corresponding antibodies in the body to fight against novel coronavirus infection and achieve the purpose of prevention. Usually, there is an adenovirus vector vaccine that only requires one injection. In addition, the recombinant subunit vaccine requires 3 doses and must follow the corresponding vaccination interval. Can I receive the second dose after 50 days. At present, 3 inactivated vaccines, 1 adenovirus vector vaccine and 1 recombinant COVID-19 vaccine (CHO cell) are approved for marketing. The COVID-19 vaccine inoculated in most regions is inactivated vaccine, which requires 2 doses. The interval between the first dose and the second dose should be 3 weeks or more, and the second dose should be completed as soon as possible within 8 weeks after the first dose.

It is also possible to give a second dose 50 days after the first dose. According to the previous clinical trial of COVID-19 inactivated vaccine, about two weeks after the second dose of inactivated vaccine, the vaccinated population can have a good immune effect.

What will happen if the second dose of COVID-19 vaccine is not injected

After vaccination, the human body will produce protective antibodies, and some vaccines will make the human body produce cellular immunity, forming corresponding immune memory, so that the human body will have immunity against diseases.

Although an injection of COVID-19 vaccine can also produce antibodies, the antibody positive rate in the body generally can only reach about 60% -90%. If the second injection is not given, the antibody positive rate and the sustainable effect are low, the protective effect on the body is not strong, and the risk of infection is still high. Therefore, it is recommended to supplement the second injection as soon as possible after the first injection.