NEWYORK— Thisisthe deadliestyearinU.S. history, with deaths expected to top 3 million for the first time — due mainly to the coronavirus pandemic.

Final mortality data for thisyearwillnotbeavailable for months. But preliminary numbers suggest the United Statesisontracktoseemore than 3.2 million deaths this year — or at least 400,000 more than in 2019.

U.S. deaths increase most years, so some annual rise in fatalitiesisexpected. Butthe 2020 numbers amount to a jumpofabout15%, andcould gohigheronceallthedeaths fromthismontharecounted.

That would mark the largest single-year percentage leap since 1918, when tens of thousands of U.S. soldiers died in World War I and hundreds of thousands of Americans died in a flu pandemic. Deaths rose 46% that year, compared with 1917.

COVID-19 has killed almost 323,000 Americans andcounting. Beforeitcame along, there was reason to be hopeful about U.S. death trends.

The nation’s overall mortality rate fell in 2019, due to reductions in heart disease and cancer deaths.

And life expectancy inched up — by several weeks — for the second straight year, according to death certificate data released Tuesday by the Centers for Disease Control and Prevention.

But life expectancy for 2020 could end up dropping as much as three years, said Robert Anderson, who oversees death statistics for the CDC.

The U.S. coronavirus epidemic has been a big driver of deaths this year, both directly and indirectly.

The virus was first identified in China last year, and the first U.S. cases were reported this year.

But it has become the third leading cause of death, behind heart disease and cancer. For certain periods this year, COVID-19 was the No. 1 killer.

But some other types of deaths also have increased.

A burst of pneumonia cases early this year may have been COVID-19 deaths that simply weren’t recognized as such early in the epidemic.

But there also have been an unexpected number of deaths from certain types of heart and circulatory diseases, diabetes and dementia, Anderson said.

Many of those, too, may be related to COVID. The virus could have weakened patients already struggling with those conditions, or could have diminished the care they were getting, he said.

Early in the epidemic, some were optimistic that carcrashdeathswoulddrop as people stopped commuting or driving to social events. Data on that is not yet in, but anecdotal reports suggest there was no such decline.

Deathsbysuicidedropped in 2019 compared with 2018, but early information suggests they have not continued to drop this year, Anderson and others said.

Drug overdose deaths, meanwhile, gotmuchworse.

Before the coronavirus even arrived, the U.S. was in the midst of the deadliest drug overdose epidemic in its history.

Data for all of 2020 is not yet available. But last week theCDCreportedmorethan 81,000drugoverdosedeaths in the 12 months ending in May, making it the highest number ever recorded in a one-year period.