LVIV, Ukraine – After Russian forces surrounded the city of Mariupol in southern Ukraine, cutting off its water and fuel and preventing aid convoys from

Americans who received the single-dose Johnson & Johnson Covid vaccine were better protected against severe illness and hospitalization during the Omicron surge if they received

The highly contagious Omicron subvariant known as BA.2, which led to a surge of coronavirus cases in Europe, is now the dominant version of the

Four out of five migraineurs may have symptoms that herald the onset of the migraine before the headache itself. The first signs often arrive with

In yet another twist to the debate over how best to protect children against the coronavirus, researchers reported on Wednesday that Covid vaccines conferred diminished

New research from the Centers for Disease Control and Prevention on adolescents’ mental health during the coronavirus pandemic suggests that for many teenagers who were

As a child in Chicago, Stephanie de Silva found that the city helped her get where she was going. Streets included directional names like “West”

One day years ago, during her training in neurology, Dr. Corinna Seliger-Behme met a man with end-stage bladder cancer. Before the diagnosis, the man had

The anti-parasitic drug ivermectin, which has surged in popularity as an alternative treatment for Covid-19 despite a lack of strong research to back it up,

The next wave of Covid-19 is coming, and in some parts of the United States, it’s already here. Are you ready? The culprit this time