The second dose of COVID-19 vaccine was inoculated for more than 28 days. Can the second dose of COVID-19 vaccine be used for more than 28 days?

The second dose of COVID-19 vaccine can last more than 28 days. There are several COVID-19 vaccines, including:

1, COVID-19 inactivated vaccine (Vero cells): inoculate 2 doses, the interval between the two doses is suggested to be ≥3 weeks, and the second dose should be completed as soon as possible within 8 weeks;

2. Recombinant COVID-19 vaccine (adenovirus type 5 vector): 1 dose;

3. Recombinant COVID-19 vaccine (CHO cells): Inoculate 3 doses, and it is recommended that the interval between two doses be ≥4 weeks. The second dose should be completed within 8 weeks after 1 dose, and the third dose should be completed within 6 months after 1 dose.

Therefore, even if it is more than 28 days, that is, about 4 weeks, it is within a reasonable range and can be vaccinated.