Enterobius vermicularis is a nematode worm. It only lives inside human guts (and here's a movie from The New England Journal of Medicine, if you have ‘the guts’ to watch and the curiosity to see what it looks like), so the cats and dogs were innocent. They may have given me Toxoplamois, (which is is a parasitic disease caused by the protozoan Toxoplasma gondii. The parasite infects most warm-blooded animals, including humans, but the primary host is the felid (cat) family) but never pinworms.
In fact, the culprit was probably one of my Torquemada-like classmates. And I might not even have gotten it off their hands. Pinworm females lay their eggs around their host’s anus, but the eggs are sticky and get transferred to clothing easily. Once they're there, the eggs are so tiny that they can become airborne. If they’re floating, anyone can come along and inhale them. Disgusting as it sounds that’s how it goes.
WEIRD, WEIRD, WEIRD!!
I’m Average Joe