A protein called CD47 that helps damaged cells avoid destruction by the immune system may be contributing to severe cases of Covid-19, researchers suggested in a report. In other news, Gilead Sciences Inc.’s intravenous antiviral drug remdesivir helped keep high-risk Covid-19 patients out of the hospital in a randomized trial.

A study out of Oxford University’s Leverhulme Centre for Demographic Science found that the Covid-19 pandemic has resulted in the largest drop in life expectancy in western Europe since World War II.

The Covid-19 pandemic reduced life expectancy in 2020 by the largest amount since World War Two, according to a study published on Sept. 27 by Oxford University, with the life expectancy of American men dropping by more than two years.

Life expectancy in the United States fell by a year and a half in 2020 to 77.3 years – the lowest level since 2003 – primarily due to the deaths caused by the Covid-19 pandemic, a U.S. health agency said on July 21.

The United States on Feb. 22 crossed the staggering milestone of 500,000 Covid-19 deaths just over a year since the coronavirus pandemic claimed its first known victim in Santa Clara County, California.

Life expectancy in the United States fell by a year in the first half of 2020 – the biggest decline since World War 2 – and stood at the lowest levels since 2006, according to estimates issued by the U.S. Centers for Disease Control and Prevention (CDC).

China has overtaken the United States in healthy life expectancy at birth for the first time, according to World Health Organization data.

The U.S. spends about twice what other high-income nations do on health care but has the lowest life expectancy and the highest infant mortality rates, a new study suggests.

Life expectancy in the United States dipped in 2016 as the number of deaths due to opioid drug overdoses surged and total drug overdose deaths rose 21 percent to 63,600, the U.S. Centers for Disease Control and Prevention said.

Even as life expectancy is rising in many places across the U.S., there are some places where lifespans are getting shorter and geographical inequalities are becoming more pronounced, a new study suggests.