In recent times, the COVID-19 pandemic has seemed to have made new developments, and many infection cases have appeared in many places across the country, especially in Sichuan, Guangdong, Beijing, Inner Mongolia and other places. The number of virus infections has been increasin

In recent times, things about the new crown epidemic seem to have made new developments, and many infection cases have appeared in many places across the country, especially in Sichuan, Guangdong, Beijing, Inner Mongolia and other places. The number of virus infections has been increasing, and the epidemic prevention and control work still cannot be a little relaxed.

When the new coronavirus continues to rage, many people began to wonder whether they need to get the fourth shot of the new crown vaccine? After the fourth shot is vaccinated, will people's ability to prevent viruses be multiplied?

I believe everyone is very confused, because on a global scale, many countries have already launched the fourth dose of the new crown vaccine. For example, Israel announced the start of the fourth dose of the new crown vaccine at the end of 2021. The United States, Germany, Thailand and other places have also launched the fourth dose of the new crown vaccine. So when will my country get the fourth dose of the new crown vaccine?

Is the fourth shot of the new crown vaccine?

Since the news of sequentially strengthening immunity was announced, the general public has been very puzzled whether sequentially strengthening immunity means getting the fourth shot? First, let’s understand what is sequential enhancement of immunity?

sequentially strengthened vaccination refers to the use of vaccines with different technical routes from basic immunization for enhanced vaccination. Taking the COVID-19 vaccine as an example, if the COVID-19 vaccine that has completed two doses of inactivated processes and subsequently completed the subsequent enhanced vaccination with any other non-inactivated processes, it is considered "sequentially strengthened vaccination."

If the new crown vaccination with the two doses of inactivated processes has been completed before, and the inactivated vaccine is still used for enhanced vaccination, it is considered "homologous enhanced immunization".

Since the booster injection needs to be consistent with the previous vaccine technical route, it can be different now. Why is this? In response, members of the expert group said: According to previous experience in infectious disease prevention and control, a single vaccine can deal with conventional viruses, but for viruses that are good at mutating, different vaccines need to be jointly operated.

sequential immunization has two advantages: one is that different vaccines can complement each other's advantages, and the other is that for some people, the side reactions of can be reduced . Due to different human constitutions, some people may have more side reactions to a certain vaccine. Vaccine changes can be used to reduce the occurrence of side reactions.

Who can be vaccinated with sequential immune enhancement injections? Can anyone fight?

, people over 18 years old.

, completed 2 doses of inactivated vaccination, and these 2 doses were inactivated COVID-19 vaccines from Sinopharm Zhongsheng Beijing Company, Beijing Sinopharm Zhongsheng Wuhan Company.

3. Complete 2 doses of vaccination throughout the whole process, and the vaccination interval cannot be shorter than 6 months.

4. I have not been strengthened, which means I have not received the third injection.

official statement that there are 5 types of people who need to pay attention to

, patients who have been diagnosed with congenital or acquired immune deficiency, HIV infection, lymphoma , leukemia or other autoimmune diseases, and patients with low immunity.

. If the disease is in an unstable period or an acute attack period.

3, lactation , pregnant women.

4. Those who are allergic to any component of the vaccine and have experienced severe allergic reactions to the vaccine in the past.

5, convulsion , epilepsy, encephalopathy or mental illness or family history; those suffering from uncontrolled epilepsy and other progressive neurological diseases have a history of Guillenbarre syndrome.

In the current epidemic situation, strengthening self-prevention and control is still the key

. Wash your hands frequently

Use soap or hand sanitizer and be sure to wash your hands with running water. Wipe your hands with disposable tissue or clean towel. After your hands touch the secretions secreted by the respiratory tract, for example, after sneezing, you should wash your hands immediately and be sure not to be careless.

. Maintain good respiratory hygiene habits

Cough or sneeze, cover your mouth and nose with a tissue or towel, wash your hands after coughing or sneezing, and avoid contact with the fairy with your hands; enhance your physical fitness and immunity, eat a balanced diet, exercise appropriately, and have a regular schedule to avoid excessive fatigue.

3. Keep the environment clean and ventilated

Open windows and ventilate less than 3 times a day, 20-30 minutes each time. If the air quality outdoors is poor, the number of ventilation times and time can be reduced; try not to go to places with dense crowds. If there are respiratory abnormalities, you must be quarantined at home.