Dr. Anthony Fauci on Sunday defended raising the bar on his projections about herd immunity for COVID-19 — insisting that he’s only been offering “estimates” all along.“We have to realize that we have to be humble and realize what we…
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…