Understanding cultures as loose or tight clarifies why some countries better responded to COVID-19 than others.

The combined evidence in a new paper is like a "flashing red arrow pointing to the Huanan market as by far the most likely site of origin" for COVID-19.

Researchers looking at a variety of potential scenarios for the spread of COVID-19 suggest that cases could start dropping in the US in March 2022.

Understanding that pandemics like COVID-19 and the Spanish flu aren't so rare should raise priority efforts to prevent and control them, says William Pan.

Doctors from Yale University break down what we know about the new Delta variant of the coronavirus that causes COVID-19 and who's most at risk.

Researchers are calling for comprehensive efforts to stop plant pandemics, which could devestate the global food supply.

A metric called the "Gini Coefficient" reveals a correlation between a nation's income inequality and higher rates of COVID-19 infection.

Even if we start to see a decrease in COVID cases, a study of the 1918 influenza pandemic suggests a spike could occur in late 2021 or early 2022.

New research adds to growing evidence that dogs can detect COVID-19 infection by smell. Can our four-legged friends help fight the pandemic?

It may be odd during the pandemic, but Valentine's Day is still important, says Justin Garcia. "We need that relationship focus more than ever right now."