A new paper in Genome Biology and Evolution, indicates that while the COVID-19 virus has developed rapidly since 2019, it has done so within limited genetic channels. These genetic limits have ...

A key step in the origin of many pandemics occurs when an animal-borne virus infects humans and then evolves to spread more efficiently from person to person. That is why scientists and physicians ...

The Centers for Disease Control and Prevention last month raised its benchmark for levels of the Covid virus in wastewater, adjusting a key metric for assessing the disease’s transmission. As a result ...

Researchers have devised a new tool for discerning between naturally occurring viral outbreaks and those resulting from lab accidents. By Carl Zimmer The Covid pandemic was an extraordinary moment in ...

Dealing with a COVID-19 infection is an unpleasant experience. Persistent cough, debilitating headaches, and an overwhelming lack of energy take its toll on the body after the usual couple weeks of ...

More than two dozen states have confirmed cases of a new COVID variant, with experts saying the mutation poses risks to people who were previously infected or vaccinated. And, it was largely ...