The study, based on anonymized Israeli medical records, showed that vaccination’s benefits extend to people who have not received a shot.
But the research, involving 2.53 million adults in Scotland, found that the vaccine’s benefits outweighed the small risks.
A diet full of highly processed foods with added sugars and salt promoted gut microbes linked to obesity, heart disease and diabetes.
A study in Mali suggests that malaria parasites hide out during the dry season by altering the properties of red blood cells.
The pandemic death toll could be lowered by next spring if more Americans wear masks, a new analysis finds.
Researchers discovered a way to awaken dormant stem cells and transform them into cartilage. If the technique works in humans, it may help ease debilitating joint pain.
Studies of patients with severe cases of Covid-19 show the immune system lacks its usual coordinated response.
Injured and unusable lungs were restored with respirators and pig blood. The procedure one day may increase the supply of organs for transplant.
In a disturbing parallel to H.I.V., the coronavirus can cause a depletion of important immune cells, recent studies found.
Antibodies to the virus faded quickly in asymptomatic people, scientists reported. That does not mean immunity disappears.
Our “hidden enemy,” in plain sight.
The app, which allows people to record their symptoms, was remarkably effective in predicting infections. The most reliable indicators, researchers found, were loss of smell and taste.
A new study adds to evidence of immunity among those who have already been exposed to the pathogen.
The drugs, hydroxychloroquine and chloroquine, have been repeatedly promoted by President Trump. But they should be used only in clinical trials or hospitals, the agency said.
If people with no symptoms are spreading the coronavirus, as some studies suggest, it may be time to give face masks the kind of advertising and promotion that support condoms as lifesavers.