Chinese authorities declared that Covid-19 had naturally transmitted from animal to human at a wildlife market in Wuhan.

A 45-year-old woman in Kolkata has been diagnosed with human coronavirus HKU1 (HCoV-HKU1), a respiratory virus that can cause ...

Scientists have learned more about how SARS-CoV-2 infections, which cause COVID-19, can ruin the ability of immune cells to ...

Tobacco kills 8 million people worldwide every year, but imagine if it could be used to make medicine. The idea isn't unheard of—tobacco has been used as a herbal medicine in the past. But now ...

COVID-19 first arrived in Coconino County on March 16, 2020, and local efforts to study the disease began not long after.