Nowadays, many places in our country have gradually adopted the policy of "comprehensive liberalization". In the early stage of comprehensive liberalization, many people were unfortunately infected with the new coronavirus and began to live in isolation at home.
Infection with the new coronavirus is very painful. Many people have symptoms of fever, weakness and sore limbs after being infected. Therefore, people who have not been infected want to prevent the new coronavirus infection.
In fact, the simplest way to prevent the emergence of the new coronavirus is to get vaccinated. However, many people said a while ago that the Sinovac vaccine is very "deceptive". After receiving the liberal vaccine, a series of sequelae appeared. Some people even said that they developed lung nodules after being vaccinated with the Sinovac vaccine.
People are very frightened by this statement. So, will there really be any sequelae after being vaccinated with the Sinovac vaccine? Can the Sinovac vaccine be taken with confidence?
Principle of the new coronavirus vaccine
The new coronavirus vaccine, that is, the new coronavirus inactivated vaccine, its principle is to inactivate a completely infectious virus through heating, radiation or chemical treatment (such as formaldehyde , β-propiolactone, etc.), making it lose its infectivity but retain its immunogenicity. That is, the nucleic acid shell of the virus can still cause the body to produce an immune response, thereby forming antibodies. Although the
inactivated vaccine will make the virus lose its toxicity, because it is a virus fragment rather than a complete virus, the immune effect will be weakened or the immunity time will be short.
With its existence, the human body can prevent COVID-19 infection. Due to the existence of this protective antibody, when it comes into contact with COVID-19 , it can directly recognize COVID-19 and integrate with it to eliminate the virus!
How long does it take for antibodies to develop after the new coronavirus vaccine is injected?
New coronavirus vaccine generally refers to new coronavirus vaccine . Normal people can produce antibodies 2 weeks after receiving the new coronavirus vaccine. As time goes by, antibody titers will increase, may reach a peak in about 4 weeks, and then gradually decrease.
Currently, the new coronavirus vaccine used is an inactivated vaccine, which requires at least two injections with an interval of 21 days. Two weeks after the first injection, about 60% of cases will undergo antibody-positive conversion; the antibody positivity rate can reach 90% 28 days after the two injections.
Some people may not be very sensitive to the vaccine . It takes about 1-2 months to develop antibodies after the injection.
If the vaccine has just been injected and the body has not produced enough antibodies and has not reached a good antibody titer, then there is still a risk of being infected with the new coronavirus. Therefore, even if you have been vaccinated against COVID-19, you must increase your safety awareness in your daily life, try not to go to crowded places, wear a mask when going out, wash your hands frequently, and keep a safe distance from others.
Sinovac vaccine
The name of Sinovac vaccine is Kelif . It has been approved for marketing by relevant agencies on February 5, 2021. In June, it was approved by World Health Organization and can be used for emergencies by the World Health Organization. So far, the Sinovac vaccine is not only widely used in China, but also in foreign countries. In the third phase of experimental results of the Sinovac vaccine, the vaccine’s effectiveness reached over 91%!
Moreover, in clinical trials and large-scale vaccination surveys, the vaccine has proven to be very reliable for the elderly and children, with very good protective effects and no serious adverse reactions.
Subsequently, it was widely used in Brazil, Indonesia, Chile, the Philippines, Egypt, Nepal, Bangladesh and other foreign countries. As of the end of 2022, the Sinovac vaccine has not yet experienced large-scale adverse reactions, which is enough to prove the safety of the Sinovac vaccine.
But why did the Sinovac vaccine suddenly become a hot search topic? And many people say that vaccination with the Sinovac vaccine will cause many adverse symptoms, such as: immunity and memory loss; gray hair, headache, hair loss; worsening skin condition, and weight gain.
Actually, it is a bit far-fetched to count the occurrence of these symptoms as side effects of the vaccine.But the most worrying thing is that some people say they will get pulmonary nodules, and some people say they will get diabetes . If this is confirmed, it will be really serious!
What happened to the Sinovac vaccine? Can I still fight with confidence?
Beijing Sinovac vaccine was on the hot search list some time ago, and some problems such as pulmonary nodules, hair loss, and memory loss after vaccination aroused heated discussions among netizens. Therefore, many people are worried about whether the Sinovac vaccine can still be vaccinated? Do the above side effects really happen?
This situation has not been officially confirmed. After all, Beijing Sinovac vaccine is an emergency use vaccine certified by WHO and has obtained the domestic new coronavirus vaccine launched in China. Before being launched on the market, a large number of clinical experiments have confirmed the effectiveness of the vaccine, and its quality management system has also been recognized by international organizations and drug regulatory authorities in many countries.
Therefore, please treat the rumors about Beijing Sinovac vaccine rationally. Do not spread rumors or believe them. Rumors only stop with the wise!
Academician Zhong Nanshan: Vaccination is the key
Academician Zhong Nanshan suggested strengthening the vaccination of heterogeneous vaccines; Academician Zhong Nanshan said that vaccination is the key to preventing new coronavirus infection. Vaccination with the same vaccine will not enhance the effect of preventing infection, but the effect of preventing severe disease is still very good. Three doses or more of the vaccine will enhance the protective effect. Compared with similar vaccines, the preventive effect of different vaccines on infection and death will be greatly enhanced.
At present, our country has developed a variety of vaccines such as inactivated COVID-19 vaccines, adenovirus vector vaccines, and recombinant protein subunit vaccines. On the basis of two doses of inactivated vaccines, and another dose of adenovirus vector vaccine or recombinant protein subunit vaccine, the effect will be significantly enhanced! Academician Zhong Nanshan specifically called for strengthening vaccine protection for the elderly and vulnerable groups. Unless there are special diseases that are not suitable for vaccination, try to get the new crown vaccine to prevent new crown infection.
Zhong Nanshan said: The severity rate of young people infected with COVID-19 is very low. If there are no warning symptoms after self-health monitoring, they can continue to be isolated at home and release more resources of fever clinics and emergency departments to elderly patients who need them more. However, if young people develop suspicious warning symptoms after self-health monitoring, they still need to see a doctor nearby in time!
During the peak period of the epidemic, people who live with the elderly should also pay attention to vaccination, consciously reduce unnecessary outings and gatherings, and protect themselves when going out to avoid infection; if symptoms of suspected infection appear, they should conduct antigen self-tests in time. If they are positive , they must self-isolate and reduce contact with the elderly at home.
Extended knowledge: Is the fourth shot of the COVID-19 vaccine required?
The fourth shot of the COVID-19 vaccine generally refers to the second booster shot, and not everyone needs to get it right away.
At present, on the basis of the first dose of booster immunization, the second dose of booster immunization can be carried out among people at high risk of infection, people over 60 years old, people with serious underlying diseases, and people with low immunity.
When injecting the second booster vaccine, attention should be paid to ensuring that the interval between the second booster vaccine and the first "booster" vaccine is more than 6 months to ensure that the antibodies in the body are maintained at normal levels.
Depending on the type of vaccine, COVID-19 usually requires two to three injections. In the case of two injections of the COVID-19 vaccine, it usually takes 2 months after the first injection of the COVID-19 vaccine and before the second injection. If it is a three-shot type of COVID-19 vaccine, you need to take the second shot about 1 month apart, and the third shot about 6 months apart.
If you have not finished the first few shots so far, you should complete the immunization as soon as possible, and then follow the doctor's advice to consider whether you need a second dose of booster vaccine later!
Usually, after being vaccinated against COVID-19, people can make the body's immune system produce a certain amount of antibodies, which can prevent COVID-19 infection, thus reducing the probability of COVID-19 infection.
Although most people with mild or asymptomatic infections at this stage still need to be vaccinated to avoid an increased chance of aggravating the disease after infection, it should also be noted that the vaccine does not 100% prevent disease infection, and self-protection measures are still needed! For example, be sure to wear a medical mask when going out, ventilate frequently, and wash hands frequently to avoid infection as much as possible.
Protecting your own safety is also protecting the safety of your family. Even if you have "recovered positive", you must pay attention to self-protection measures. Don't think that you are "lawless" if you have antibodies. You should still be careful about secondary infection of by .
