The virus became the third leading cause of death in the U.S., and caused so many to die in the prime of life that the country experienced the biggest drop in life expectancy since World War II.

Researchers say the herd immunity threshold isn't the right finish line to end the pandemic. Instead, the public should just focus on getting as many people vaccinated as possible.

At work every day, Agnes Boisvert attends to ICU patients "gasping for air" and dying from COVID-19. But communicating that harsh reality to her skeptical community has been a challenge.

The administration is in its early days, but the infectious disease expert says he's encouraged by the new president's attitude about the pandemic. Science, Fauci says, is "going to rule."

On his first day in office, the president plans to sign an executive order extending the CDC's moratorium on evictions. Housing advocates say the CDC rule needs to be strengthened.

When Kansas issued a mask mandate, 81 counties opted out. Researchers found coronavirus infection rates rose sharply in the opt-out counties, while falling in those that required masks.

Per capita deaths in the U.S. from COVID-19 and other causes are 85% higher than in countries like Germany and Israel. "The United States really has done remarkably badly," a study author says.