claim: once fully immunized (14 days after the second covid-19 vaccination), the incidence rate per 1,000 person-days is 0.04.
article_headline: interim estimates of vaccine effectiveness of bnt162b2 and mrna-1273 covid-19 vaccines in preventing sars-cov-2 infection among health care personnel, first responders, and other essential and frontline workers a eight u.s. locations, december 2020amarch 2021 | mmwr
initial_claim: study estimates 2.8% coronavirus infection rate for indiana.