Contagion summary: Spread by human feces in areas of poor sanitation.
Contagiousness properties of Ascariasis:
Contagious overall?: Yes
Contagious from water?: Yes
Contagious from food?: Yes
Contagious from feces?: Yes
Contagion summary: You or your children can become infected after touching your mouth with your hands contaminated with eggs from soil or other contaminated surfaces. 1
Contagion discussion: Ascarid eggs are found in the soil. Infection occurs when a person accidently ingests (swallows) infective ascarid eggs. Once in the stomach, larvae (immature worms) hatch from the eggs. The larvae are carried through the lungs then to the throat where they are then swallowed. Once swallowed, they reach the intestines and develop into adult worms. Adult female worms lay eggs that are then passed in feces; this cycle will take between 2-3 months.
Pigs can be infected
with ascarids. Occasionally, a pig ascarid infection can be spread to
humans; this occurs when infective eggs, found in the soil and manure, are
ingested. Infection is more likely if pig feces is used as fertilizer in
the garden; crops then become contaminated with ascarid eggs.1
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Last updated: 24 March, 2005