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COVID-19 vaccine: Answers to frequently asked questions

chinadaily.com.cn | Updated: 2021-01-11


Q: How long does it take to produce antibodies after vaccination?

A: Clinical studies have shown that antibody production generally begins seven days after the first dose of the inactivated COVID-19 vaccine, and the antibody positivity rate is about 60-90 percent in 14-28 days. The antibody positivity rate reaches more than 90 percent 28 days after the second dose of vaccine and provides continuous protection.


Q: Do I need to check if I have generated antibodies? If test results are negative, do I have to restart the vaccination procedure from the first shot?

A: There's no need to check if you have generated antibodies unless there is a special requirement for it. For those who voluntarily take an antibody test and receive negative results, it's also not recommended to restart the vaccination procedure.


Q: Can I take the COVID-19 vaccine with other vaccines, such as the HPV vaccine, flu vaccine or rabies vaccine?

A: The COVID-19 vaccine is a new vaccine, so it is not recommended that you get a COVID-19 vaccine at the same time as any other vaccine.


Q: Is it safe to get the COVID-19 vaccine, which was developed in a short time?

A: The COVID-19 vaccine, like any other vaccine, has undergone animal testing, human pre-clinical testing, and population phase I, II and III clinical trials before going to the market. The safety of the vaccine has repeatedly been proven.

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