The antibodies' ability to neutralize COVID-19 did not differ significantly over the six-month period.
Poll taken before new federal policy announced shows strong support across the board among people age 50 to 80, with some exceptions.
An NIH study, co-led by a Michigan Medicine researcher, will follow participants over 13 months.
More studies needed, but those with largest financial barrier benefit most, analysis shows, as legal challenge mounted against the Affordable Care Act’s cost-sharing-reduction mandate.
Lessons from this year’s vaccine drive could help future prevention campaigns, says expert.
Many are taking steroids that could increase risk of COVID-related hospitalization, researchers say.