My reading of that article suggests a slightly idiomatic translation as "Kill Them All." While that may be poor long-term strategy in a war amongst peoples, the point raised in this medical article is that failure to completely wipe out the enemy (pathogen, bacteria, whatever) can lead to the remaining organisms becoming resistant to the drug treatment.
This was a rather prescient article, I think, given how long it took for the medical community to realize the manner/ease with which pathogens can evolve to be drug-resistant.
I spent some time surfing, and found a book or two in which the term is spelled "Sterisilatio Magna" . I can only take a hack at translating, but the words and the drawing there suggest this is the same medical subject.
and dang me, there's even a Facebook page on this concept!
So, with the preferred spelling, references show up everywhere.