COVID-19 could still be infected! What is the function of vaccine?

In fact, many people don't understand the role of vaccines and think that they will still be infected after vaccination, so they simply don't fight. In fact, this behavior is very dangerous. In fact, vaccination is one of the most economical and effective ways to prevent and control infectious diseases. Vaccines are made from a small amount of harmful substances in pathogenic bacteria. After injected into the human body, the human body will produce corresponding antibodies to fight against the virus, so that the human body will react later to resist the invasion of this virus.

Why is it infected after vaccination?

The first thing we need to know is that vaccination cannot resist the virus 100%. Vaccine is only an auxiliary tool, which can reduce the probability of human infection, and the effect of vaccine will gradually weaken over time. In addition, COVID-19 has been constantly mutating since the outbreak, and every time the virus mutates, it will have some impact on the vaccine. In a word, vaccination is the most effective preventive method for us.

What is the function of vaccine?

Vaccination can make the human immune system produce a variety of immune substances, such as immune hormones, active physiological substances, antibodies and so on. And it can also make the human immune system produce powerful? Immune memory? . When the same pathogen enters the human body, the human body will have an immune response in a short time, produce more protective substances, and try to kill the invading pathogen to reduce its harm to the human body. The main purpose of this immune effect after vaccination is to improve human immunity and reduce the pathogenicity of the virus. After achieving this goal, it can produce the effect that even if it is infected, it will not get sick or die.

Does the vaccine have any side effects on human body?

After all, vaccines are made of a small amount of foreign viruses. Although it induces human immune system to produce protection against specific diseases, some vaccinators will have some side effects due to the biological characteristics of vaccines and individual differences of human bodies. But almost a day or two is enough. Some people have special physical characteristics and may react more seriously than ordinary people. At that time, they need to arrive at the hospital on time.