The mRNA vaccines by Pfizer and Moderna contain genetic instructions for our cells to make the spike protein of the SARS-CoV-2, which the virus uses to infect and enter the human cells. The study found that mRNA COVID-19 vaccines were 91 per cent effective in reducing risk for infection once participants were "fully" vaccinated, two weeks after the second dose. Of these, 156 were unvaccinated, 32 had an indeterminate vaccine status, and 16 were fully or partially vaccinated. The fully or partially vaccinated participants who developed breakthrough had milder symptoms than those who were unvaccinated. "I hope these findings reassure the public that mRNA COVID-19 vaccines are safe and protect us from this severe disease," Yoon added.

Source: Mint July 07, 2021 09:45 UTC