nytimes August 23, 2021 1:01am The U.S. Is Getting a Crash Course in Scientific Uncertainty #yourfeedscience #coronavirus2019ncov #vaccinationandimmunization #rumorsandmisinformation #centersfordiseasecontrolandprevention #research #socialmedia #medicineandhealth #unitedstates #science #news The U.S. Is Getting a Crash Course in Scientific Uncertainty As the pandemic takes an unexpected direction, Americans again must reckon with twists in scientific understanding of the virus.