According to the CDC, no isolated samples of the Covid-19 virus exist. The image below cites a July 2020 document but researchers continue to say their requests for isolated samples are denied because they are "unavailable". This limitation probably harms the race to develop drug treatments, leaving the field open to vaccine makers. I've been wondering how the vaccine developers are creating their mRNA for Covid-19 if they don't have isolated samples. Perhaps the quote from the article below answers my question.The tiny tweak behind COVID-19 vaccinescen.acs.org ^ | SEPTEMBER 29, 2020 | Ryan Cross"On Jan. 10, Chinese scientists...