The reproduction number R is often used as an indicator to predict how quickly an infectious disease will spread.

Purdue Pharma will pay more than $7 billion for the corporation's role in fueling the opioid epidemic that has killed hundreds of thousands of Americans. The Sackler family and Purdue Pharma reached a ...

U.S. sociologist Scott Feld wrote, "Your friends have more friends than you do." Feld's so-called friendship paradox states that the friends of any given person have more friends on average than the ...

Amid fears of another global pandemic, social media users are circulating claims that all schools in China have been closed ...

The Covid-19 outbreak in 2020 was on a scale not seen since the Spanish flu pandemic in 1918 and laid bare our lack of ...