By MIKE STOBBE, Associated Press NEW YORK (AP) — The decline in U.S. drug overdose deaths appears to have continued this year, giving experts hope the nation is seeing sustained improvement in the persistent epidemic.

There were about 97,000 overdose deaths in the 12-month period that ended June 30, according to provisional Centers for Disease Control and Prevention data released Wednesday. That’s down 14% from the estimated 113,000 for the previous 12-month period. “This is a pretty stunning and rapid reversal of drug overdose mortality numbers,” said Brandon Marshall, a Brown University researcher who studies overdose trends.

Overdose death rates began steadily climbing in the 1990s because of opioid painkillers, followed by waves of deaths led by other opioids like heroin and — more recently — illicit fentanyl. Provisional data had indicated a slight decline for 2023, and the tally released Wednesday showed that the downward trend has kept going. Of course, there have been moments in the last several years when U.

S. overdose deaths seemed to have plateaued or even started to go down, only to rise again , Marshall noted. “This seems to be substantial and sustained,” Marshall said.

“I think there’s real reason for hope here.” Experts aren’t certain about the reasons for the decline, but they cite a combination of possible factors. One is COVID-19.

In the worst days of the pandemic, addiction treatment was hard to get and people were socially isolated .