Some Covid-19 Studies Are More Meaningful Than Others
A doctoral researcher works in the cell cultivation area of a chemical engineering lab that is developing a rapid test for Covid-19 at the Federal University of Rio de Janeiro (UFRJ) in Rio de Janeiro, Brazil (Photographer: Maria Magdalena Arrellaga/Bloomberg)

Some Covid-19 Studies Are More Meaningful Than Others

(Bloomberg Opinion) -- New antibody tests are allowing researchers to begin to make more-informed estimates of how many people actually have Covid-19. They’re not perfect, though, and they’ve been ...
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