- Eye Opening
In the race to inject COVID-19 vaccines into millions of arms worldwide, scientists wrestle with the ethics of whether to allow a clinical trial’s placebo participants to get a vaccine immediately after it’s approved for emergency use. Some say studying the long-term effects of vaccines, such as their safety and efficacy, could be compromised by doing so. Other researchers insist that the potential for human suffering overrides the possibility of long-term data damage.
About the Authors
David Cyranoski reports for Nature from Shanghai, China. Additional reporting by Smriti Mallapaty.