Is the natural antibody produced by illness more durable than the resistance of vaccination

Yu Wenzhou, chief physician of the Chinese Center for Disease Control and Prevention, said that both of these statements are not acceptable. On the one hand, we need to understand the working principle of vaccines. Getting vaccinated is like conducting a "practical exercise" for the immune system, which involves administering pathogen components that have been specially processed, lost or weakened in toxicity, so that the immune system can recognize the "enemy" in advance without causing disease. When the real "enemy" attacks, the immune system can quickly respond and defend accurately. If the vaccine is not administered, the consequences of the immune system's emergency response may be uncontrollable. Even though some infectious diseases can generate immunity after infection, the health cost they have to bear is sometimes very high, and they may even face disability or life-threatening situations. For example, when there was no vaccine in the past, almost every child was at risk of contracting measles. In addition to fever and rash, it could also develop pneumonia, and in severe cases, encephalitis. Now, after receiving two doses of measles containing vaccine according to the immunization program, children can basically obtain long-lasting immunity. In recent years, the reported incidence rate of measles in China has remained at about one per million, and the immune protection effect is remarkable.

On the other hand, it is necessary to scientifically understand the effectiveness of vaccines. The protection of the human body by vaccines, in addition to preventing infection, is more important in preventing severe illness and death. For example, a large number of domestic and foreign studies have shown that getting vaccinated against influenza in kindergartens and schools can reduce the outbreak of influenza epidemics; Vaccinating the elderly and those with chronic underlying diseases with influenza vaccines can significantly reduce the incidence of severe illness and death after contracting influenza.