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@melvin Ad5-nCov Aug 12 才开始phase 3 在saudi arabia (Completion date :TBC) Phase 3 都是 long term efficacy test (1 year +) 才会有结果。三个月到半年的是 phase 2. 就好像moderna mrna-1273 的phase 3 end date 是在 october 2021.
The virus mutates during spreading and has become more adapted to transmission among humans in different populations from different countries,” he said.
But as the variants were related to each other, tracking mutations within different groups could help to determine the origin of the virus, he said.
“This research indicates that the spread of the virus is increasingly adapted to different populations and therefore the pandemic needs to be taken seriously,” Lu said.
“People need to pay more attention to prevention and control … the virus may coexist with humans for a long time.”