The eggs are then eaten by earthworms in which they develop through three larval stages over 10 days to become infective. The cycle is completed by the pig eating the earthworm. Infection, therefore, only occurs where pigs have access to earthworms, for example, in outdoor production.
The eggs are consumed by earthworms, which undergo three larval stages over 10 days to become infective. The cycle is finished when a pig consumes the earthworm. Infection only occurs where pigs have access to earthworms, such as in outdoor farming settings.