1. What are the new coronavirus vaccines in China?
China’s new crown vaccine research and development is in the first place in the world. There are currently five technical routes for domestic new crown vaccine research and development, including inactivated vaccines, recombinant protein vaccines, adenovirus vector vaccines, attenuated influenza virus vector vaccines and nucleic acid vaccines
Cultivate the new coronavirus in vitro, then inactivate it to make it non-toxic, and use it to stimulate the body to produce antibodies.
Advantages: mature technology, high safety, easy to store and transport
Disadvantages: large vaccination dose, single immunization route
Recombinant protein vaccine
The S protein of the new coronavirus is produced in large quantities through genetic engineering and injected into the human body to stimulate the body to produce antibodies.
Advantages: safe and efficient, easy to store and transport Disadvantages: slow production, weak immunogenicity
Adenovirus vector vaccine
The modified harmless adenovirus is used as a carrier to load the S protein gene of the new coronavirus to stimulate the body to produce antibodies.
Advantages: safe and efficient, easy to store and transport, few adverse reactions
Disadvantages: effectiveness may be insufficient
Attenuated influenza virus vector vaccine
The approved attenuated influenza virus vaccine is used as a carrier to carry the S protein of the new coronavirus to stimulate the body to produce antibodies.
Advantages: less inoculation doses and long immunization time
Disadvantages: long development time, difficult to store and transport
Nucleic acid vaccine (mRNA and DNA vaccine)
Inject the gene encoding the S protein into the human body, and use human cells to synthesize the S protein in the human body to stimulate the body to produce antibodies.
Advantages: fast development and production, strong immunity, high safety
Disadvantages: immature technology, weak stability, difficult to store and transport
2. Is China’s new crown vaccine safe?
Research shows that the current safety is better!
According to statistics, since July, on the premise of voluntary, informed, and consent, the domestically-made new crown vaccine has carried out emergency vaccination of more than 1 million doses of high-risk exposure groups. After strict adverse reaction monitoring and follow-up observation, no serious adverse reactions occurred. More than 60,000 of them went to high-risk areas overseas, and there were no reports of serious infections.
In addition, Zhejiang Jiaxing, Yiwu and other places started in mid-October. As of December 17, Sichuan had vaccinated more than 46,000 people with the first injection and 12,000 with two injections.
3. Who gets the vaccine first? How to get the vaccine?
On December 19, the State Council’s Joint Prevention and Control Mechanism held a press conference to introduce that China’s current strategy for new crown vaccination is based on the “two-step” plan.
The first step: mainly for some key populations, including those who are engaged in import cold chain, port quarantine, ship piloting, aviation air service, fresh food market, public transportation, medical disease control, etc., who are at high risk of infection, as well as those who go to medium and high risk countries or People who go to work or study in the area;
Step 2: As the vaccine is approved for marketing, or the production of vaccines gradually increases, more vaccines will be put into use. Through the orderly implementation of vaccination, eligible people can meet the needs of the people.
4. How long can the new crown vaccine be administered?
Given that the discovery of the new coronavirus has been less than one year old, no conclusion can be drawn on the validity period of the vaccine protection at present. However, current evidence suggests that the protection period of vaccines is more than half a year as required by WHO regulations.
5. How long does the new crown vaccine work?
Wang Huaqing, chief expert of the Chinese Center for Disease Control and Prevention’s immunization program, said that the effect of immunization with two injections will be better. Judging from the new crown vaccine literature published in the previous period, the effective time is mainly two weeks after the second dose of the vaccine, which will produce a better immune effect.
6. What are the adverse reactions of the new crown vaccine?
Common adverse reactions: headache, cough, vomiting, diarrhea, loss of appetite, and local redness or lumps at the vaccination site; systemic reactions include fever, pain, fatigue, etc.
Generally, no treatment is required. If fever exceeds 38.5°C or local redness and swelling are particularly severe, seek medical attention.
7. After vaccination, should I wash my hands frequently and wear a mask?
Need and necessary!
For individuals, it takes a certain amount of time for vaccination to produce protective antibodies. For groups, only a certain proportion of antibodies can produce protective effects. Therefore, personal protective measures such as frequent hand washing, wearing a mask, and maintaining social distancing are still needed.
8. What are the precautions for vaccinating the new crown vaccine?
People who are allergic to vaccines are prohibited;
It is recommended that the new crown vaccine and HPV vaccine be administered separately;
It is not recommended to vaccinate patients with fever, patients with chronic illnesses, patients with acute illnesses, and pregnant women.
9. Tips for getting the new crown vaccine
According to past experience, adverse reactions will appear within 30 minutes after vaccination. Therefore, after vaccination, the vaccinated person should stay at the vaccination site for 30 minutes, and after 30 minutes, if there is no discomfort, they can go home. After going home, if symptoms related to adverse reactions occur, seek medical attention promptly.
In addition, pay attention to diet and rest after vaccination, and keep the vaccination site clean and dry.