Will COVID evolve to cause less severe disease? Why we can’t assume the answer is yes
When scientists find a new disease-causing virus in humans, the first question they want answered is: Can this thing spread...
Social Impact
Man sues UPMC over COVID test
A Monroeville man is suing UPMC after a misread COVID-19 test and a phone call that forced him to cancel...
Monica Gandhi: Nine things we still need to do to co-exist with COVID-19
Unlike other formidable viruses like smallpox, SARS-CoV-2, which causes COVID-19, is not eradicable. At least 29 species of animals can...
Ryanair and Brussels Airlines strikes hit European travel
Cabin staff at Ryanair and Brussels Airlines are protesting over pay and working conditions. The walkouts mark another blow for...
Pfizer says updated COVID-19 booster can provide more protection against super-contagious omicron
Pfizer says changing its COVID-19 vaccine to better target the omicron variant is safe and effective. The update, in a...
Pfizer says Omicron-specific COVID vaccine generates a stronger response
Pfizer-BioNTech said Saturday that a trial of its two Omicron-modified COVID-19 vaccine candidates elicited a "substantially higher immune response" against...
Florida COVID cases, hospitalizations remain at ‘high’ risk level
COVID-19 infections and hospitalizations hit a plateau in Florida last week. The state reported 10,542 daily cases during the seven-day...
Shanghai records zero COVID cases for first time since March
China is the last major economy committed to a zero-COVID strategy, with restrictions aimed at stamping out all infections.China has...
Pfizer says tweaked COVID-19 shots boost omicron protection
Pfizer announced Saturday that tweaking its COVID-19 vaccine to better target the omicron variant is safe and works — just...
COVID-19 vaccines saved nearly 20 million lives in a year, study says
Nearly 20 million lives were saved by COVID-19 vaccines during their first year, but even more deaths could have been...