The preventive effect of vaccines can be divided into several levels, such as prevention of infection, prevention of morbidity, prevention of severe illness, and prevention of death. The existing COVID-19 vaccines are highly protective against both severe illness and death.
● For individuals: it can reduce the risk of infection, and even if infection occurs, it can effectively reduce the risk of morbidity, especially severe illness and death.
● For populations: Reduce novel coronavirus transmission by increasing vaccination rates and establishing better population immune barriers. Vaccination can reduce the probability of infection, or possibly reduce the viral load of those infected with the vaccine breakthrough, shortening the detoxification time of those infected with the vaccine breakthrough, thereby reducing the transmission of the virus.
According to real-world studies conducted in countries with large epidemics outside China, especially in Chile, where more than 10 million people were studied, the protective efficacy of China's inactivated vaccine against all symptoms of COVID-19 was 65.9%, and the protective efficacy against severe illness, hospitalization in ICU and death was up to 87.5%, 90.3% and 86.3%, respectively. This strongly demonstrates that our national vaccine can effectively reduce the risk of severe illness and death.
Meanwhile, unvaccinated groups are the main risk group. Across the globe, the Delta variant is most likely to strike and cause death in unvaccinated populations, despite the presence of breakthrough vaccine infections. The Delta variant may reduce the protection of the COVID-19 vaccine, but it protects against all types of vaccines and generally reduces the risk of severe illness and death.
People aged 60 and above are at high risk of severe illness and death after infection with novel Coronavirus. Data from available clinical studies indicate that novel Coronavirus vaccines are safe for older persons.
Patients with chronic diseases are those with high risk of severe illness or death after infection with Novel coronavirus. Vaccination is recommended for those with stable health conditions and well-controlled chronic diseases.
At present,
The epidemic prevention and control situation is grim
Please continue to take good personal protection
