COVID-19 vaccine tested on human

Initially, it will be tested on two people. Scientists will evaluate the effectiveness of the vaccine, as well as its side effects and its ability to trigger an immune response. The mass vaccine production line is now ready to produce millions of doses as soon as the tests show positive results.

There are currently about 100 kinds of COVID-19 vaccines that are being studied. At least five of those are being prepared for step one of clinical trials on humans.