Dr. Ajay K. Sethi, an infectious disease epidemiologist and associate professor of population health sciences at the University of Wisconsin-Madison, cautioned that there is no evidence Gold and his co-investigators “used a scientific approach to test their hypothesis that ‘different exposure to vaccines between younger and older people may account for this different morbidity rate [in COVID-19].’”
But Dr. Jim Conway, a pediatric infectious disease specialist at the University of Wisconsin-Madison, said readers “need to be cautious when people are trying to draw associations that don’t have a lot of biological plausibility.”