>>21441238Parasitologist here.
Helminth eggs, particularly those of Enterobius species, can survive and be viable for many weeks on any surface.
Such as door handles, money, or the surface of your fast food delivery bags.
So if thirdies have touched anything you touch, then you use your hands to eat or touch your face, There's a strong chance you will get infested with worms.
Most people have worms btw. Even in North America.
Look around you.
If you haven't dewormed in the last six months, you likely have worms too.