The interval between two injections is 28 days. According to the study of COVID-19 vaccine, if it is injected only once, it may not achieve the ideal defense effect. Through a lot of research, it is found that the human body antibody inoculated with two doses of COVID-19 vaccine can achieve high protection efficiency.
Secondly, COVID-19 vaccine belongs to inactivated vaccine. After all inactivated virus vaccines enter the human body, it will take some time to produce antibodies. The time of antibody production in COVID-19 is relatively slow. In the meantime, in order to help the human body produce antibodies as much as possible, it is necessary to vaccinate COVID-19 vaccine twice to consolidate it, so as to improve the vaccination success rate in COVID-19.
Precautions for Vaccination in COVID-19
After vaccination in COVID-19, you need to stay at the vaccination site for 30 minutes. If there is a serious vaccine reaction or allergic reaction during the observation period, you need to contact the resident doctor at the inoculation point in time.
Secondly, it is necessary to observe the possibility of delayed allergic reaction 30 minutes after leaving the inoculation point. If you have rash, chest tightness, hoarseness and other clinical manifestations, you need to seek medical advice as soon as possible.
Third, it is necessary to observe the changes of body temperature after COVID-19 vaccination. If you have a slight fever, you generally don't need special medication. But if the body temperature exceeds 38.5℃, you need to go to a medical institution for treatment.
Refer to the above? People's Daily-People's Daily: China COVID-19 vaccine builds immune defense line.