Can COVID-19 booster needle be administered without interval? Is COVID-19 vaccine causing serious adverse reactions

Can COVID-19 vaccine be administered without interval

It is not allowed to administer COVID-19 vaccine twice at the same time. The interval between two shots of COVID-19 vaccine is generally 14-28 days. After the first vaccination, the recipient needs to receive the second dose of the vaccine 14 to 28 days later. COVID-19 vaccine is usually injected at the upper arm deltoid muscle, the first injection is to the left, and the second injection is to the right deltoid muscle. The degree of adverse reactions to vaccines is not significant, "said Shao Yiming, a researcher at the Chinese Center for Disease Control and Prevention and advisor to the World Health Organization's Vaccine Development Committee." The more severe the epidemic, the greater the side effects of vaccines. The side effects of vaccines depend entirely on what kind of technology and route they are developed using. Therefore, using traditional technology to inactivate vaccines is very safe. Protein vaccines, including virus vector vaccines, have also been used for many years, so their side effects are completely within a safe and acceptable range. Otherwise, the National Medical Products Administration and other countries would not approve their use