That leaves little reaction time for health care system administrators like Dr. Tammy Lundstrom, chief medical officer for Michigan-based Trinity Health, which operates 92 hospitals and 120 continuing care facilities in 22 states.
"We have our data team poised, ready to hit the button to help us identify all our patients who are ready for a booster," Lundstrom said. "We're anxiously waiting for guidance, as is everybody."