Scientists have announced a drop in the effectiveness of vaccines and proposed a plan of action

A group of British scientists who are investigating a vaccine campaign against CORONAVIRUS infection COVID-19 have found that vaccines aimed at combating a high-intensity delta strain may soon be needed, writes BLOOMBERG.

According to scientists, the third wave of coronavirus in the United Kingdom was caused by the delta strain both among unvaccinated people, especially those aged 12 to 24, and among some Britons who were vaccinated. In total, the researchers took samples from 98 thousand people.

They estimate that vaccine effectiveness has dropped to 49% from 64% a month earlier. However, the level of ability of vaccines to protect people from developing symptoms of COVID-19 was 59% compared to 83% in the previous month. The study's authors say developing new vaccines against the delta strain may be justified in light of evidence that the strain has mutated to the point where antibodies produced when existing vaccines are given to patients become less effective.

However, scientists believe that current vaccines still provide a relatively high degree of protection. According to their calculations, those who were fully vaccinated were three times less likely to become infected with the delta strain than those who were not vaccinated, and they were also much less likely to show symptoms of COVID-19.