The team validated the 17 candidate compounds in several types of cells, including stem-cell-derived human lung cells, to mimic SARS-CoV2 infection of the respiratory tract.
The social networking platform has displayed warnings on more than 190 million pieces of Covid-related content that were rated as false or partly false.
The Delta variant is predicted to increase to the high 80 percent level while all the other three are predicted to stay below the 9 percent mark of total cases.
According to the study, 95 per cent of individuals who received two doses of the Sinopharm vaccine have developed antibodies similar to a naturally infected Covid-19 person.