What is COVID-19 vaccine booster? What kind of people need to struggle? What are the advantages of this needle?

According to the data released by National Health Commission, as of June 65438+1October 1 1, the cumulative reported vaccination amount of COVID-19 vaccine in China exceeded 2.22 billion doses. With the arrival of autumn and winter, recently, many places have begun to strengthen immunization work, and COVID-19 has begun to strengthen vaccination.

Data Map: People are vaccinated with COVID-19 vaccine booster. Chen she

Open more vaccines to strengthen immunity

The "golden code" here became a "stone code" after the intensive injection.

In September this year, Zhejiang, Henan and other places proposed to launch COVID-19 vaccine to strengthen immunization. Up to now, according to incomplete statistics, Anhui, Fujian, Henan, Heilongjiang, Hubei and other provinces have definitely started to strengthen vaccination.

In Hubei, Wuhan, Xiangyang, Yichang, Huangshi, Jingzhou and other places have started immunization with COVID-19 vaccine. As of June 10, there are1407 10/0,000 people in Hubei who have completed the supplementary immunization. For example, Wuhan has given priority to strengthening the immunization of high-risk personnel in key areas such as Jinyintan Hospital and Airport, and basically achieved full coverage.

On October 9th, 65438/KLOC-0, Guangxi officially launched the supplementary immunization with COVID-19 vaccine, and implemented the policy of free vaccination for residents. All people over 18 who have been vaccinated with COVID-19 vaccine for six months can be vaccinated.

In Fujian, Xiamen, Quanzhou, Jinjiang and other places have begun to vaccinate COVID-19 vaccine to strengthen immunization. The Health and Health Commission of Xiamen proposed that in June 10-June10, Xiamen will begin to strengthen immunization for people over the age of 12 who have completed two doses of inactivated vaccine or one dose of adenovirus vector vaccine for six months.

It is worth noting that according to the news released by the Heilongjiang Provincial Center for Disease Control and Prevention on June 5438+00, the health code of people who have completed the intensive vaccination of COVID-19 vaccine will be upgraded from "golden code" to "stone code" as proof of subsequent intensive vaccination.

Data Map: Students are vaccinated in COVID-19. Photo by Rob

Who can inject the enhancer?

In September this year, at the press conference held by the joint prevention and control mechanism in the State Council, Wang Huaqing, chief expert of immunization program of China CDC, suggested strengthening vaccination for three key populations.

These include employees at ports, isolated places and designated medical institutions, and people with high risk of virus exposure; People with impaired or low immune function, some people over 60 years old, and people studying and working abroad, especially those who go to countries where the epidemic continues to spread.

However, there are some differences in the requirements of strengthening needle vaccination in different places, such as the minimum age limit of the vaccinated population and whether to give priority to the key population.

In terms of age limit, it is stipulated in most areas that the vaccination target of this booster needle is mainly people who have completed vaccination for six months, above 18. However, in some areas, such as Wuhu in Anhui and Xiamen in Fujian. , also started 12 years old or older inactivated vaccine intensive vaccination.

In the choice of vaccine, at present, many places are aimed at people who have completed two doses of inactivated vaccine or one dose of adenovirus vector vaccine for six months. In addition, most areas indicated that priority should be given to strengthening needle vaccination for key populations at this stage, but some areas did not limit the vaccination target to key populations.

Specifically, Hubei, Guangxi, Fujian and other places have clearly given priority to vaccination of key populations, while some areas such as Jinan, Shandong, Hefei, Anhui and Suihua, Heilongjiang have not clearly defined the restrictions on key populations.

Data Map: Medical staff vaccinate students. Photo by He Penglei

Besides the COVID-19 vaccine, this vaccine can't be forgotten.

At present, the global COVID-19 epidemic continues to develop, and COVID-19 accelerates the spread of mutation, so the risk of importing the epidemic into China is still high. In the face of the continuous pressure of epidemic prevention and control in COVID-19, vaccines have undoubtedly played a key role. Strengthening immunization is of great significance for protecting susceptible people and effectively curbing the spread of the epidemic.

At the press conference of the State Council joint prevention and control mechanism held before, Wang Huaqing once introduced that antibodies produced by enhancing immunity have stronger endurance. After half a year of intensive immunization, although the antibody level has also decreased, it is still higher than the peak after two or one doses of vaccine. All these suggest that strengthening immunization will have a better protective effect.

In addition, related studies show that strengthening immunization can not only increase antibodies, but also broaden antibody spectrum, which means that it will have a better protective effect on mutants.

Wang Huaqing reminded that in the choice of vaccine, the current expert's suggestion is to use the vaccine produced by the original inoculation enterprise. If the same enterprise cannot meet the supply, it should also choose the vaccine with the same technical route for vaccination. In other words, it is not recommended to "mix" strengthening needles at present.

It is worth mentioning that as an epidemic prevention measure in autumn and winter, influenza vaccination is also carried out in various places. So, can influenza vaccine and COVID-19 vaccine be vaccinated at the same time? According to the suggestion in the Technical Guide for Vaccination in COVID-19 (First Edition) released this year, it is not recommended to vaccinate at the same time with other vaccines, and the interval between other vaccines and COVID-19 vaccine should be greater than 14 days.