New research suggests that natural immunity after a COVID-19 infection has fallen sharply since Omicron became the dominant variant.

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to help the virus copy itself in mammals — including humans — more easily, accord...

Scientific Reports - Novel brain SPECT imaging unravels abnormal cerebral perfusion in patients with postural orthostatic tachycardia syndrome and cognitive dysfunction

The molecular signature of Long Covid in children’s plasma has been found using an AI-based tool on a blood sample. It works with 93% accuracy.

Sweden's relaxed approach to COVID-19, emphasizing voluntary compliance and avoiding strict lockdowns, resulted in higher mortality rates compared to neighboring countries, despite preserving individu...

This chart shows the global risk outlook according to 900 international experts from different fields.