A) inoculation
B) contamination
C) piercing
D) flying
Correct Answer: B
Solution :
Children are the usual victims and familial infection is common. Transmission is effected from one person to another by the ingestion of eggs i.e. due to contamination. The eggs are transferred to food and swallowed by the patient himself or the infection may occur direct from anus-to-mouth, a very common habit with children. This type of infection is called auto-infection.
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