Adults 20-49 key to last year's US COVID-19 resurgence, study saysAdults 20 to 49 years old may be sustaining the resurgence of COVID-19, according to a study published late last week in Science.The researchers looked at age-specific mobility trends from more than 10 million Americans and used mathematical modeling to estimate the proportion of COVID-19 cases per age-group, finding that young adults less than 35 appeared to have comparable mobility compared with older age-groups as pandemic restrictions eased through Oct 29, 2020.
However, the estimated viral reproduction number across 38 states, New York City, and the District of Columbia was highest in those 35 to 49 years old (1.39) and 20 to 34 (1.29).