The home, which was run by an order of Catholic nuns and closed in 1961, was one of many such institutions that housed tens of thousands of orphans and unmarried pregnant women who were forced to give up their children throughout much of the 20th century.
In 2014, historian Catherine Corless tracked down death certificates for nearly 800 children who died at the home in Tuam between the 1920s and 1961 — but could only find a burial record for one child.
You don’t, the „journalist“ just made that up instead of searching for a minute finding details that would have enabled them to write a proper article.
There’s even an extensive Wikipedia article outlining known facts and atrocities - dumping the bodies is probably the least atrocious thing they’ve done.
There is even a Tuam Home Survivors website listing the names of the deceased and how they were uncovered by the historian.
Apparently this week they started a new dig to uncover the bodies as they found some but not nearly all of them.
It took me just a couple of minutes to uncover the info and write a tiny bit of that down. This is how journalism dies.
EDIT: This ARTE.tv Documentary outlines that DNA is used as you would expect: to identify the remains of lost relatives.