Despite increased media attention to the possibility that the novel coronavirus may have escaped from a lab, no credible evidence has emerged to support it and most scientists think the virus likely has a natural origin.
Background Science
Q&A on the Rare Clotting Events That Caused the J&J Pause
The Facts on the Recommended J&J Vaccine ‘Pause’
The Evolving Science of Face Masks and COVID-19
A Guide to Johnson & Johnson’s COVID-19 Vaccine
A Guide to Moderna’s COVID-19 Vaccine
Q&A on COVID-19 Vaccines
A Guide to Pfizer/BioNTech’s COVID-19 Vaccine
Q&A on COVID-19 Antibody Tests
The Facts on Coronavirus Testing
Federal officials have provided confusing and sometimes contradictory statements about the number and availability of tests to diagnose new coronavirus infections. We’ll explain how testing works, what happened with the CDC’s coronavirus test and what’s known about how many tests are available in the U.S.