Oh, fuck you. XD

Not always. It depends on the mode of infection. If a parent hunts down a host for direct infection, they don't need many offspring. For other parasites, especially those that don't have a free-living adult form, they often produce huge amounts of eggs or larva. Think of parasitic worms, for example. Most of the young never find a host, so they need numbers.

How did I not catch that? That's a damn good headline