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Whipworms (Trichuris) - Positive
Over 60 species of Trichuris have been documented, and each has been found to undergo a similar life cycle. The adults thrive in a host's large intestine with their anterior end embedded in the cell lining to rob nutrients. The parasite's exact lifespan is unknown, but they can live for several years. Females are capable of producing more than 10,000 eggs in a single day, which are passed out of the host's body with digestive waste and require a warm, moist environment to continue development into the embryonic stage. Infection is acquired through the accidental ingestion of eggs and embryos. Because these parasites do not actually multiply within the host, every individual worm inside a host represents an independent infection event.
