1) description of the organism
-giant roundworm of humans, belongs to the phylum Nematoda. Responsible for the disease ascariasis in humans. Most common parasitic worm in humans.
-giant roundworm of humans, belongs to the phylum Nematoda. Responsible for the disease ascariasis in humans. Most common parasitic worm in humans.
2) description of the life cycle
-infections occur when an ingested infective egg releases a larval worm that penetrates the wall of the duodenum and enters the bloodstream. From there it is carried to the liver and heart, and enters the pulmonary circulation to break free in the alveoli, where it grows. In 3 weeks, the larvae pass from the respiratory system to be coughed up, swallowed, and returns to the small intestine, where they mature to adult worms. Can persist in soil for 10 years or more.
-infections occur when an ingested infective egg releases a larval worm that penetrates the wall of the duodenum and enters the bloodstream. From there it is carried to the liver and heart, and enters the pulmonary circulation to break free in the alveoli, where it grows. In 3 weeks, the larvae pass from the respiratory system to be coughed up, swallowed, and returns to the small intestine, where they mature to adult worms. Can persist in soil for 10 years or more.
3) description of the part of the world where people are affected.
-prevalent worldwide and more so in tropical and subtropical countries.
-prevalent worldwide and more so in tropical and subtropical countries.
4) treatment (if any) for the resulting disease
-Ivermectin, Nitazoxanide
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