At least 165 Covid-19 vaccines studied

Usually testing a vaccine takes many years of trials and approvals plus thousands of subjects for testing.

But this process has been streamlined for the current pandemic and all across the world researchers are testing their ideas for a vaccine.

At least 165 studies are underway, all with varied approaches: DNA, RNA, weakened virus, inactivated virus, proteins, and viral elements. About 27 vaccines are in human trials now, according to The New York Times.