Researchers at Weill Cornell Medicine identified a specific and unique kind of immune cell activity in the lungs of Covid-19 patients that is different from the type of immune cell activity found in other respiratory infections.

Clinical diagnostics company Novacyt, one of many healthcare companies whose shares have surged during the pandemic, launched a test to differentiate between Covid-19 and common winter diseases.

An international team of researchers led by the University of Manchester developed a new antiviral using natural glucose derivatives called cyclodextrins – a type of sugar – which shows promise in treating a broad range of viruses including herpes simplex, respiratory syncytial virus, hepatitis C, HIV and Zika virus.

Enanta Pharmaceuticals Inc.’s treatment for a highly contagious respiratory infection met the main goal of reducing virus levels in the body in a mid-stage study.