Is there any reaction after COVID-19 vaccine?

A: After vaccination, as a biological product, it may cause fever, rash and induration. This is the characteristic of biological products, and it also shows that the immune system responds to vaccines. This is a normal phenomenon. Generally, it will relieve itself in a day or two. Don't panic. After vaccination, you should stay in hospital for observation for 30 minutes. When there is any adverse reaction suspected to be related to vaccination, if it lasts for a long time and the symptoms are serious, first, you should report it to the vaccination unit, and second, you should seek medical advice in time.

Sequential booster immunization is heterologous booster immunization, which refers to COVID-19 vaccine with different technical routes when selecting booster immunization. For example, inactivated vaccine was inoculated before. If inactivated vaccine is selected for booster immunization, it is homologous booster immunization, while if COVID-19 vaccine with non-inactivated technology is selected, it is called sequential booster immunization. No matter what COVID-19 vaccine is injected, there may be some side effects, among which fever is a very common one, and it is normal after taking Kangxinuo COVID-19 vaccine, which will generally subside within 48 hours.

Kangxinuo COVID-19 vaccine belongs to adenovirus vector vaccine. This vaccine is different from inactivated vaccine. It uses harmless adenovirus plus COVID-19 nucleic acid. The technical route is advanced and the effect is better, so in theory, the body will react to it more strongly. But in fact, most people have no side effects, even if a few people have side effects, they will not be particularly serious, just wait for recovery.

Analysis of illness: According to your situation, some people will have fever, fatigue, soreness, rash and other side effects after vaccination with COVID-19 vaccine. Generally, it can return to normal in about three days without special treatment, and the fever does not exceed 38.5℃. Physical cooling can be used. If you can't tolerate arm pain, you can see a doctor.