U.S. life expectancy fell by a year and a half in 2020, the largest one-year decline since World War II, public health officials said Wednesday. The decrease for both Black Americans and Hispanic Americans was even worse: three years. The drop spelled out by the CDC is due mainly to the COVID-19 pandemic, which health officials said is responsible for close to 74% of the overall life expectancy decline. More than 3.3 million Americans died last year, far more than any other year in U.S. history, with COVID-19 accounting for about 11% of those deaths. Black life expectancy has not fallen so much in one year since the mid-1930s, during the Great Depression.