Human Trials of New COVID-19 Vaccine Begin

ACS Reactions catch up with experts they talked to at the start of the pandemic and ask, "what do we know now that we didn’t back then?"

Millions of people are now being immunized with the new Pfizer/BioNTech and Moderna mRNA vaccines. Are they effective? Are they safe? Infectious disease and global health expert Carlos del Rio, MD, of Emory University answers your questions.

Hear from researchers in the Chromosome Replication Laboratory at the Francis Crick Insititute, who have been testing thousands of drugs against SARS-CoV-2 using a biochemical test.