This study shows that SARS-CoV-2 infection and vaccination generate strong, highly specific spike-binding immune responses ...

A new study sheds light on the timeline of the human immune response when confronted with SARS-CoV-2 and other infectious diseases. Ergin Yalcin via Getty Images More than four years after Covid-19 ...

Dec. 29, 2025 As the immune system weakens with age, scientists have found a way to restore some of its lost strength. By delivering mRNA to the liver, they created a temporary source of ...

Since the SARS-CoV-2 pandemic began three years ago, its origin has been a topic of much scientific — and political — debate. Two main theories exist: The virus spilled over from an animal into people ...

It’s that time of year: a thick, oppressive heat blankets everything, people huddle inside air-conditioned homes, offices, shops and cafes for respite—and COVID is surging again. Levels of SARS-CoV-2, ...

Feb 21 (Reuters) - A newly discovered bat coronavirus uses the same cell-surface protein to gain entry into human cells as the SARS-CoV-2 virus that causes COVID-19, raising the possibility that it ...