Will I still be infected if I detect antibodies after being injected with the new crown vaccine?

Text | Little Pharmacist of Shanghai Beach

As we all know, the human body will produce specific antibodies after being vaccinated with the new crown vaccine, so that the vaccinated people will have a certain degree of immunity to the new crown virus re-infection.

Not all viruses will produce corresponding antibodies after infection

Antibody is a special protein in the blood.

Most people infected with the virus will produce the corresponding antibodies.

Antibody is not a question of presence or absence, there is also a question of titer

In general, the ability of a certain virus to induce the body to produce antibodies (the degree to which it stimulates human immunity) is closely related to the severity of the acute disease induced by the virus.

At the same time, after the antibody is produced, it still faces the problem of titer.

Antibodies are not a panacea, the body’s immunity will also decline

As we all know, antibodies have protective effects, but excessive antibodies may be harmful.

The detection of antibodies to the new coronavirus can determine whether the vaccine is really effective after vaccination, and it can indicate whether a person is immune when exposed to the virus again.

Figure 1 Literature source Z.

Even if you have experienced a viral infection, you may still need to be vaccinated

Beijing Concord analyzed the blood samples of more than 9,500 people (see Figure 1 for the source) and found that about 40% of patients infected with the new coronavirus developed neutralizing antibodies.

Therefore, whether it is a virus vaccine that has been infected with the virus or has been vaccinated before, if there is insufficient antibody protection in the body after testing, it means that the body's defense against the virus is limited, and it may still need to be vaccinated again to continuously resist the new Increased and mutated viruses.