Drug addiction does not respect boundary lines on a map — a fact proven by two recent stories in The Post-Journal.

On Saturday, we ran a story focusing on a discussion by county Board of Health members about the flood of fentanyl into Chautauqua County. Of course fentanyl is nothing new here, but its prevalence is alarming.

“When an individual thinks they are buying heroin it’s probably fentanyl,” said Dr. Michael Faulk, interim Chautauqua County public health director. “When people are buying methamphetamine, it probably has fentanyl in it. Those are probably the biggest … methamphetamine, heroin and cocaine.”

Wednesday brought news from Warren County that a Youngsville woman had been charged with drug delivery resulting in death after allegedly selling fentanyl to a person who later died after taking the drug. It’s the second such charge in Warren County in a little over a month, a fact that prompted a strong message from Warren County District Attorney Rob Greene.

“Fentanyl is in Warren County and being sold to our kids and young adults. It comes in many forms and is often found laced in other drugs. This is causing death to knowing and unsuspecting users at alarming rates around the United States and our small community is not immune. Let me be clear to drug dealers — if you sell fentanyl or other hard drugs in Warren County, we will come after you aggressively with the full force of the law.”

It’s easy for a Jamestown resident or a Warren resident to look at the news on the other side of the border and think it’s the other state’s problem. But the prevalence of fentanyl in our communities is not one of those times. This is an issue on which cooperation between the two state governments is essential. The federal government can and should do more with both aid and in helping slow delivery of fentanyl. And, finally, officials in both Warren and Chautauqua counties should be sharing information and help as much as they’re able.

We’re all in this fight together.