Is the side effect of COVID-19 booster injection of Beijing Biotech great? How long is the validity period of COVID-19 vaccine

Is the side effect of Beijing Biological COVID-19 vaccine great

Most people have no adverse reactions after vaccination, and a few users only have slight pain or fever, and it disappears in a day or two.

Adverse reactions that may occur generally include pain, tenderness, redness, and itching at the injection site within 24 hours after vaccination, which usually disappear on their own within 2-3 days; After vaccination, there may be transient fever and fatigue, which disappear on their own in the short term and do not require treatment. At present, the vaccines listed in China have been approved by the national drug regulatory authorities and have good safety and immunity. Therefore, everyone does not need to deliberately wait for a certain vaccine or consider the number of doses when receiving the vaccine. As long as they meet the physical conditions, they can receive the vaccine.

How long is the validity period of COVID-19 vaccine

Current evidence shows that there is little doubt about the vaccine protection period, which is more than half a year as required by WHO. The flu vaccine is administered once a year because the flu virus mutates rapidly and different subtypes are prevalent each year. COVID-19 vaccine does not need to be re vaccinated for half a year or once a year, which is optimistic and unlikely.