Recently, news about vaccines has continued: the state announced that the new crown vaccine is free for all people, and Shanghai has completed the emergency vaccination of 602,000 people with the new crown vaccine… Yesterday, the data of “the protective efficacy of domestically produced new crown vaccine is 79.34%” has once again aroused everyone’s discussion.

What does protection effectiveness 79.34% mean?

This means that after vaccination, our probability of contracting the new coronavirus has decreased by 79.34%.

Seeing that more and more people are vaccinated with the new crown vaccine, and there are various reliable and unreliable rumors, you may have a lot of questions:

Do I need to worry about side effects when I get a vaccine?

After being vaccinated, will it definitely not be infected with the new crown?
 

Can other vaccines be given during the vaccination period?

The inactivated vaccines currently used are very safe! The current inactivated vaccines used for emergency vaccination have already passed two rounds of complete clinical studies on mice, various other animals, and many people, so there is no way to talk about mice. There is no need to worry too much about side effects. According to the official news from the press conference of my country’s joint prevention and control mechanism: The current adverse reactions after vaccination are mainly local pain and induration. Less than 0.1% of mild fever cases and only about 2/100 cases of severe adverse reactions Million (and not necessarily related to vaccines).Since the vaccine entered clinical research, although there have been reports of fever, fatigue, allergies, facial paralysis, transverse myelitis-like symptoms, and even death after vaccination, we should be clear: After vaccination, minor adverse reactions are normal. As for those serious adverse reactions, investigations by professional institutions have found that one part is not clearly related to the vaccine, and the other part has been relieved after treatment. As for death, the current description is more sensational, and there is no clear evidence that it is related to the vaccine.

What does protection effectiveness 79.34% mean?

According to the Phase III clinical trial data disclosed by overseas media: In the UAE and Brazil, the inactivated COVID-19 vaccine used in my country has 79.34% and 78% protection against COVID-19, respectively, and 100% protection against severe illness and death. The protection rate of close to 80% does not mean that 100 people are vaccinated, 80 people are effective, and 20 people are not effective, but-people who are vaccinated have an 80% lower risk of infection than those who have not. This means that vaccination can reduce the risk of infection by nearly 80% within a certain period of time and avoid deaths caused by infection with the new coronavirus.

How long will it take for the vaccine to work? How long will it last?

More detailed data has not been released on the public platform, but based on the results of phase I and phase II clinical studies, most people will produce enough protective antibodies about 2 weeks after the completion of the 2 doses of vaccination. As for how long the protective effect of the vaccine can last, there is no clear answer for the time being. After all, the vaccine development time is less than one year, and there is very little information on immunity persistence. However, according to official information, after 2 doses of vaccine, neutralizing antibodies can last for more than half a year. I believe that with the deepening of research, this number will continue to extend.

No longer need to do nucleic acid testing after being vaccinated?

Even if vaccinated, as long as you have had close contact with a confirmed case, you should still undergo nucleic acid testing. The protective effect of any vaccine will not reach 100%, so even if the vaccine is vaccinated, it does not necessarily mean that it will not be infected or diseased. When necessary, nucleic acid testing should be carried out in accordance with local requirements, and daily protection should be done. Similarly, the risk of infection will be reduced after vaccination, but it does not mean that it is 100% safe to travel to high-risk areas or abroad. Protection must be done.

I want to get the new crown vaccine, how should I get it?

The vaccine used for emergency vaccination requires 2 doses with an interval of 14-28 days. However, according to the national “Notice on Promoting the Vaccination of New Coronavirus for Key Populations”: At this stage, the new coronavirus vaccination is only open for key occupational groups for epidemic prevention and those who really need to work abroad. At present, vaccinations in most areas are uniformly notified by the unit and go to officially approved vaccination institutions for vaccination. With the orderly advancement of epidemic prevention work and more abundant vaccine supplies, the scope of the vaccine population will be gradually expanded in the future.

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