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 ...

The immune systems of some people who have not been exposed to the novel coronavirus could have some familiarity with the pathogen -- possibly helping to reduce the severity of illness if that person ...

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 ...

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

Across all domains of life, immune defenses foil invading viruses by making it impossible for the viruses to replicate. Most ...

COVID-19 tests used to be able to detect a positive case within the first 48 hours, but many results are now delayed until four days after symptoms appear, according to the LA Times. Elizabeth Hudson, ...