Moscow’s exit from the deal generated alarm in a number of populous lower-income countries dependent on Ukrainian grain.

As omicron infections wane, some government leaders are optimistic that COVID-19 is becoming endemic, meaning more predictable and manageable. But many scientists say it’s too soon to tell and warn against easing pandemic restrictions.

COVID-19 is contributing to a dramatic decline in the average lifespan of Americans. The drop-off is canceling out decades of public health gains and stretching the gap between the United States and …

It’s been almost a year since the first COVID-19 vaccines were approved, and half of the world is at least partly vaccinated. Now, the emergence of the omicron variant is underscoring the risks of un…

The United States is being flooded with fentanyl-laced fake pills, exacerbating an opioid crisis already spiraling amid the pandemic.