@geteducated, trials are designed to achieve a conclusion whether they are safe and have a reasonable chance to be effective – and do it very quickly. Waiting until knowing all answers will take several years. Please give NIH, CDC, Persident’s op Warp Speed recognition for changing the protocols.
30% is not “nothing”, and while people will be vaccinated, we will find out more. I am even wondering whether Chinese & Russians are doing the right things vaccinating 3rd world at some, probably not high, risk (admittedly, not for themselves)