photo: reuters

Most of them are in the preclinical stage of testing.

The world health organization reported that 133 in the world are developing potential vaccines against COVID-19. Most of them are in the preclinical stage of testing.

This writes CNN.

As noted, 10 of the potential vaccines are undergoing clinical trials in the US, UK and China. With 123 of them are in the preclinical stage of testing, in particular, the University of Tokyo, University Tulane, the University of Alberta and the University of Pittsburgh.


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