Where does “vermina” come from?

vermina (Portuguese) comes from French vermine, from Old French vermine, from Vulgar Latin verminum, from Latin vermis, from Latin fugāre, from Latin fugere, from Proto-Italic fugiō, from Proto-Indo-European bʰewg- — to flee; to enjoy, benefit.

vermina (Portuguese): vermin creatures, people or thing that cause harm and annoyance