Chinese disease control expert： It takes one to two weeks to produce antibodies after vaccination with COVID-19 vaccine.

　　People’s Daily Online, Beijing, December 13 (Reporter Sun Hongli) Today, the joint prevention and control mechanism of the State Council held a press conference on health management of key populations and answered questions from reporters.

　　At the meeting, a reporter asked, some elderly people think that it is a little late to vaccinate COVID-19 vaccine. How long can I produce antibodies after vaccination?

　　In this regard, Wang Huaqing, chief expert of immunization program of China CDC, said that the elderly who have not completed vaccination should be vaccinated as soon as possible. It does take some time to have a protective effect after vaccination. Generally, it takes one to two weeks to produce antibodies after vaccination, but if a relatively high level of antibodies is to be produced, it will take about four weeks after full immunization. However, sometimes it is necessary to carry out intensive immunization. After intensive immunization, the time to produce antibodies is faster and shorter, and the level of antibodies produced is higher.

　　"Therefore, those who have not completed vaccination should be vaccinated as soon as possible, and those who have not completed strengthening should be strengthened as soon as possible, so as to play a better protective role." Wang Huaqing said.