COVID

Immune cells might abort SARS-CoV-2 infection, forestalling a positive PCR or antibody test, a study in hospital workers suggests

Researchers are still puzzling over what this drug does at the molecular level to help COVID patients

This year is unlikely to see as many severe cases as last year, but relaxed restrictions and a patchwork of vaccination could still mean trouble, experts warn

SARS-CoV-2 appears to travel widely across the cerebral cortex

An immunologist explains how the immune system changes as people mature

Fluvoxamine is both inexpensive and highly effective at preventing mild COVID-19 from turning severe

The FDA’s decision to expand eligibility for the Pfizer vaccine to young kids could mean less illness, safer school and more freedom

As U.S. Food and Drug Administration advisers recommend authorizing shots for children aged five to 11, researchers predict what this might mean for populations

A new book reveals how quiet scientists, big drug companies and the Trump administration raced to meet the COVID threat—and why kids are just now being considered for shots

Wealthy countries have bought up most of the available vaccine doses for booster shots but still have far more than they need

Now that the FDA has authorized the shots for a broad range of Americans, many people want to know if they need a booster dose. Here’s what we have learned so far

The Merck pill, which could become the first oral antiviral COVID treatment, forces the coronavirus SARS-CoV-2 to mutate itself to death