Feng Zijian, a researcher at the Chinese Center for Disease Control and Prevention, and Shao Yiming, an expert at the Chinese Center for Disease Control and Prevention, evaluated the effectiveness of vaccines against the “delta”variant of coronavirus. Their words are transmitted by RIA Novosti.

According to studies and the results of observations that are currently available, the protective effect of COVID-19 vaccines against this variant may decrease, the scientist pointed out. “But the existing vaccines still have good preventive and protective properties against the delta variant,” he added.

At the same time, Shao Yiming stressed that no vaccine can prevent infection by 100 percent. Despite this, experts agree that the existing strains are still in the controlled range of drugs available at the moment. He recalled that the measures taken to prevent and combat the epidemic in China since last year have also shown their effectiveness.

Earlier, the effect of COVID-19 mutations on the effectiveness of vaccines was evaluated by Rinat Maksyutov, director of the State Scientific Center for Virology and Biotechnology “Vector” of Rospotrebnadzor. According to him, the appearance of new variants slightly reduces the effectiveness of drugs. Despite this, they remain effective and form the necessary collective immunity.