A physician calls from an outlying hospital to report that his patient has passed a large, white, round worm with pointed ends that is about 8 inches long. He is concerned this could be Echinococcus but the only parasite that matches this description is Ascaris lumbricoides. Which of the following is false regarding Ascaris lumbricoides?
Submitted by: Administrator* A. Most infected humans are asymptomatic
* B. Large numbers of larvae passing through the lung can cause asthma type symptoms
* C. Large numbers of adult worms in the gut can cause obstruction
* D. The fertilized unembryonated egg passed in the stool requires a period of time to embryonate before it becomes infectious
* E. Heavy infection has been associated with rectal prolapse
Correct Answer: E
Submitted by: Administrator
* B. Large numbers of larvae passing through the lung can cause asthma type symptoms
* C. Large numbers of adult worms in the gut can cause obstruction
* D. The fertilized unembryonated egg passed in the stool requires a period of time to embryonate before it becomes infectious
* E. Heavy infection has been associated with rectal prolapse
Correct Answer: E
Submitted by: Administrator
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