Researchers at the Lindsley F. Kimball Research Institute find that as variant strains emerge, we will need to reevaluate vaccine efficacy by testing the inhibition of viral infection in vivo rather than by quantifying the antibodies produced after in vitro exposure.
Reliable proof of immunity through vaccination may only come through reinfection challenge experiments or through longitudinal studies of postvaccination subjects.
IHME model extends to November 01, 2021 – predicts Fall upswing in mortality
Mortality expected to increase 3x from current levels.
Increase in excess deaths attributed to spread of Delta variant.