3 ms·

The parasite only effects humans and dogs. I guess that the worms in the water go away after a while. Prevention breaks the cycle.

• duskwuff 4y ago
  The worms themselves don't live in the water at all. Its larvae are released into the water, and can only grow to maturity and reproduce if they're consumed by a host.
  • b112 4y ago
    And, then consume some of the host (I guess?)