What do having had Covid-19 and wearing a fanny pack have in common? Neither should affect whether you should get the Covid-19 vaccine. Some may claim that they are “immune to the Covid-19 coronavirus” after recovering from an infection and…

LOS ANGELES — Patients with severe COVID-19 disease who develop respiratory failure have malfunctions in their immune systems that distinguish them from other COVID-19 patients, according to a new study led by Cedars-Sinai. The findings could help doctors develop new…

A new study has found evidence of a “robust cellular memory” against Covid-19 that lasts for at least six months after infection, reinvigorating the question of whether natural infection with the virus could grant lasting immunity after a study last…

President Trump on Friday was taken to the Walter Reed National Military Medical Center in Bethesda, Maryland, after contracting COVID-19. Trump is expected to remain at the hospital “for the next few days” in a special presidential suite of rooms,…