'Stop chasing yesterday's virus': How Mass General experts think vaccine development should change

Scientists should focus on protecting people against both current and future coronavirus variants when developing the next generation of COVID-19 vaccines, according to two infectious disease experts at Boston-based Massachusetts General Hospital.

Michael Callahan, MD, and Mark Poznansky, MD, PhD, wrote a guest essay published June 10 in The New York Times, in which they warned that evolving coronavirus variants could overcome the immunity provided by existing vaccines and prior infections.