A T-cell test developed by Adaptive Biotechnologies could become the first commercially available test of its kind, and it may be more effective at detecting past COVID-19 infections than antibody ...

HOUSTON, Texas (KTRK) -- A new study suggests memory T cells may protect some people infected with COVID-19 by remembering past human coronavirus infections. The National Institute of Allergy and ...

Contrary to public concerns, receiving frequent COVID-19 booster vaccinations will not weaken the immune system, providing reassurance to vulnerable groups facing new variants. Study: No evidence of ...

Experts expect cases to rise again this winter. Here’s the latest on symptoms, treatments and testing. By Dani Blum Dani Blum has reported on Covid since the spring of 2020. There are few constants ...