ECMO may offer sickest COVID patients chance for 'exceptional survival', study finds

Cancer patients do benefit from COVID-19 vaccination, study finds

New Antimicrobial Air Filters Tested on Trains Rapidly Kill Viruses – Including SARS-CoV-2/COVID-19

News at a glance: Hong Kong’s high COVID-19 death rate, Biden’s ‘test and treat,’ and a ResearchGate lawsuit