Why should COVID-19 get two chances?

COVID-19 vaccine needs to be injected twice, because after one injection of COVID-19 vaccine, the antibodies produced in the body are very weak, and there are not enough antibodies against novel coronavirus.

Generally, after the second vaccination, the antibody produced in the body will gradually increase, and the antibody can only play a preventive role after reaching a certain amount. Generally, the second vaccine should be injected within 1 after vaccine injection 14-28 days to achieve better preventive effect.

At present, the effect of vaccines on mutant viruses in China

The variation of virus has always been a concern of the country, vaccine research and development units and production units. Virus mutation is a global problem. From the global monitoring of virus variation, there is no evidence that virus variation will invalidate the existing vaccine. With the support of the national joint prevention and control mechanism, our vaccine manufacturers will continue to monitor and respond to mutant strains.

In any case, the mutated virus is only a part, and the vaccine in China has clearly protected the epidemic strains. Everyone should be vaccinated with COVID-19 vaccine as soon as possible under the deployment of the country, and quickly establish a population immune barrier.

Refer to the above? The document-the second dose of COVID-19 vaccine, so do it!