Public Health
How to explain falling COVID-19 mortality rates
COVID-19 mortality rates are dropping in the U.S. and other nations — a few theories explain why more people are surviving the coronavirus.
"T cells" could provide immunity after antibodies fade
T cells that combat SARS-CoV-2 have been discovered in people who never had COVID-19, potentially putting natural herd immunity within our grasp.
Moderna’s COVID-19 vaccine produces more antibodies than infection
Two shots of Moderna’s COVID-19 vaccine produces more antibodies than a coronavirus infection, according to Phase 1 preliminary data.
Study: Risk of death from COVID-19 is 45% lower on arthritis drug
The arthritis drug tocilizumab may lower ventilated patients' risk of death from COVID-19 by 45%, according to a retrospective study.
Survivors’ plasma might prevent coronavirus infections
Injections of COVID-19 survivors' blood plasma might prevent coronavirus infections, making them a promising stopgap until a vaccine is ready.
FDA: Smokeless cigarettes produce less harmful chemicals
FDA clears Philip Morris to market its smokeless cigarettes as modified risk tobacco products, which could benefit smokers battling a nicotine addiction.
Natural herd immunity to COVID-19 might be impossible
Coronavirus antibodies can disappear, according to a new study, potentially killing hopes that natural herd immunity will end the COVID-19 pandemic.
What we know about how the coronavirus affects the brain
Studies are finding that the coronavirus affects the brain as well as the lungs in some patients, causing delirium, strokes, and even fatal swelling.
New air filter for COVID-19 could lower risk of being indoors
A new air filter for COVID-19 heats up to nearly 400 degrees Fahrenheit to kill the coronavirus in aerosols.
Is the coronavirus airborne, and does it matter?
Is the coronavirus airborne? More than 200 scientists have told the WHO that yes, it’s likely the coronavirus spreads through aerosols.