1. Is it necessary to get a booster shot of the new coronavirus vaccine?

From the international situation, the world has entered a new peak of infection, and a few developed countries have approved the third dose of booster vaccine. However, whether the booster shot is effective requires close attention to relevant data. This data can provide reference for our country to formulate public epidemic prevention policies.

From a domestic perspective, the Chinese people are mainly vaccinated against the new crown inactivated vaccine of Sinopharm and Sinovac. On August 20, the "China Centers for Disease Control and Prevention Weekly" published online a study by the Guangdong Provincial Center for Disease Control and Prevention on the effectiveness of the inactivated vaccine against the Delta variant strain, the world's first.

The study highlights that two doses of inactivated vaccine are required to provide protection against the Delta strain. Individuals who have completed their first dose should receive their second dose as soon as possible. In other words, the COVID-19 vaccine booster shot is feasible, but the full course of the previous COVID-19 vaccine must be completed.

2. When will the booster shot of the new coronavirus vaccine be given?

When can the booster shot of the new coronavirus vaccine be given? On August 20, Zhong Nanshan, an academician of the Chinese Academy of Engineering, publicly stated: "This is related to the effectiveness of the vaccine and the transmission coefficient of the virus. The effectiveness of China's vaccine is about 70%, so China needs more than 80% of the entire population to be vaccinated before it can Establish an effective herd immunity. Now, China’s vaccination rate will probably reach more than 80% by the end of this year.” From the vaccination time window, there is currently no general population that has completed vaccination within one year. Booster vaccinations are necessary; my country is conducting research on whether to carry out booster vaccinations for people with weak immune function who have completed immunization for more than 6 months to 12 months and for people engaged in high-exposure risk occupations.

In short, there is no need to worry. Our first priority is to complete the first and second vaccinations and take daily protection. The country will open booster vaccinations for us under the premise of safety.