Science

Rabbi Samuel Herzfeld’s hand was disinfected by Dr. Chao Wang on Monday, July 27, 2020, during a clinical trial for the coronavirus vaccine at Meridian Clinical Research in Maryland. Amanda Andred-Rvedes | W. Washington Post | Getty Images A top group advising U.S. health officials predicted on Tuesday that four …

In this March 16, 2020, file photo, the subject is given a modalized vaccine for COVID-19 in a first-stage safety study clinical trial by Moderna, a disease caused by the new coronavirus, at the Kaiser Permanent Washington Health Research Institute in Seattle. Ted S and War Run | A.P. On …

Using lasers, engineers at the University of Florida Atlantic were able to visualize what happens to aerated particles when exhaled through a N95 mask with a face shield (left) or an exhaust valve (right). Photo: Florida Atlantic University College of Engineering and Computer Science A new study of lasers suggests …

Throughout the summer, as information about how coronavirus affects children has dwindled, I update the balance sheet in my head. Every study I read, every expert I spoke to filled in the blanks on this sheet: Reasons to send my children back to school and vice versa come in September. …

This graph can tell you a lot about your future. Each bar shows how many new infectious diseases emerged in one year. In 1944, there was one. In ’48, three. We have no immunity to new pathogens. Epidemics are a new threat to every disease on this list. It was …