Original popular science article: Let’s get vaccinated together. Do you know these precautions for the new coronavirus vaccine?

Editor: Kang Yan Reviewer: Yang Pengbin

(Zhang Yu) China is carrying out large-scale COVID-19 vaccination work. In the coming period, the elderly over 60 years old and children aged 3-17 will also be gradually included in the vaccination scope. Although there is a lot of popular science about vaccination, many people still have a demand for vaccination knowledge.

The author of this article is a staff member of the Centers for Disease Control and Prevention. Using an interactive question-and-answer approach, this article conveys to the public the precautions for COVID-19 vaccination and answers some common questions. For example, "Do I still need to wear a mask after vaccination? Do I need a third booster shot?" These are the issues that the public is most concerned about, and they are all covered in the article, with concise and professional answers.

There is absolutely nothing more important than getting the new coronavirus vaccine recently. Many friends have asked me about the vaccine. Today we will use a short article to popularize some knowledge.

No.1. People who are allergic to what things cannot receive the new coronavirus vaccine?

Generally speaking, people who are allergic to the ingredients of the vaccine or the ingredients in the vaccine processing technology cannot be vaccinated. But how do we determine if we are allergic to the ingredients of the vaccine? The simplest way is that if you have had an allergic reaction to a vaccine before, you cannot get the vaccine. So can people who are allergic to pollen, dust, or peanuts get the vaccine? There is no problem with all of these. Of course, if you are in the acute stage of allergies and have urticaria, it is recommended that you consult the vaccinating doctor.

No2. Will the vaccine affect pregnancy preparation?

Of course not. The ingredients in the vaccine will not have a significant impact on the body, let alone affect pregnancy preparation. Some people are worried about getting pregnant after getting vaccinated. What should they do? Dr. Zhang tells you that it will not have any effect if you are not worried. However, for those who are already pregnant, it is recommended to postpone the vaccination.

No3. Do people who have had COVID-19 not need to be vaccinated?

Of course not. Although you can acquire immunity after being sick, it is not lifelong. You do not need to be vaccinated within 6 months after recovery, but you still need to be vaccinated according to the situation.

No4. Do I need to wear a mask after getting the vaccine?

Wrong, you must wear it. Although the vaccine can make the body immune, it does not necessarily mean that you will not be infected. Therefore, wearing a mask is still an indispensable preventive measure. You must get the vaccine and insist on wearing a mask. Double measures are the only way to be safe.

No.5.What should not be done after vaccination?

Eat fish, spicy food, or take a bath? Actually, none of them. You can’t drink alcohol. It is not recommended to drink alcohol within 3 days after receiving the new crown vaccine, which may mask the symptoms of adverse reactions. As for the so-called taboos such as fish, beef, mutton, and spicy food, they do not exist. However, in order to avoid needle eye infection, you should still pay attention to taking a bath and protect the needle eye.

No.6. Will the delay in getting the second shot affect the effect? ​​Is it necessary to have another booster shot?

Generally speaking, the first shot takes three weeks to take effect, and the recommended cycle for the second shot is within 8 weeks after the first shot, so that the immune effect is best. However, if you really miss the time, it doesn’t matter, just get the shot as soon as possible.

No.7. When it was time for the second shot, I found that the vaccine was from the same manufacturer as the first shot. Can this vaccine be used?

If the first injection is an inactivated two-dose vaccine, then the same type of vaccines from different manufacturers can be mixed, but different types of vaccine must not be mixed.

No8. Will the second shot be more painful than the first?

Of course not, the vaccine used for both injections is the same. Generally speaking, there are several reasons for feeling more painful, one is the injection technique, the second is the depth of the injection, and the third is the psychological feeling. But in essence, the second injection is not more painful than the first.

The last question is, how long is the effective protection period of the vaccine?

According to current data, the duration of the vaccination is at least 6 months to 1 year, but it varies from person to person. Some people do not produce antibodies after vaccination, or the antibody titer is low. But the vast majority of people can maintain the duration for more than 6 months.

Under the premise that the domestic epidemic has become normalized, actively getting vaccinated against COVID-19, wearing masks, washing hands frequently, and gathering less are still the most effective means of preventing COVID-19 infection. I hope everyone can do this consciously. After all, these are the last line of defense to protect our safety.