A little more than five years have passed since the start of the covid-19 pandemic
The coronavirus that causes covid-19 has inflamed the largest number of people worldwide, killing about 15 million people and leaving about 400 million people with long-term health problems. It also caused the biggest economic downturn since the Great Depression of the 1930s. All of this may have been far more devastating.
“On the scale of pandemics, covid-19 is moderate,” says Mark Woolhouse of the University of Edinburgh, UK. “There will be others, and they may be much worse than the one we had. That. . .