Nematode Infections: Ascaris lumbricoides and Intestinal Helminths
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Nematode Infections: Ascaris lumbricoides and Intestinal Helminths

Learn about Nematode Infections, specifically Ascaris lumbricoides, a giant roundworm that affects 1 billion individuals worldwide, mainly in tropical regions. Understand the pathology, symptoms, and complications of this soil-transmitted helminth. Test your knowledge on the diseases of poverty and its impact on human health.

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Questions and Answers

What is the characteristic arrangement of somatic muscles in Trichuris trichiura?

Holomyrian type

What is the estimated number of eggs produced by a female Trichuris worm over its average lifespan of 2 years?

60 million

Which of the following is a common consequence of heavy Trichuris trichiura infections?

Bowel obstructions and intussusception

What is the approximate number of individuals infected with Ascaris lumbricoides worldwide?

<p>1 billion</p> Signup and view all the answers

What is the primary method of transmission of Trichuris trichiura infections?

<p>Contaminated soil and water</p> Signup and view all the answers

What is the function of the TT47 protein in Trichuris trichiura?

<p>To embed into the intestinal wall</p> Signup and view all the answers

What is the type of muscle arrangement found in Ascaris lumbricoides?

<p>Polymyarıan type</p> Signup and view all the answers

What is the primary function of the secretion produced by Ascaris lumbricoides, known as pepsin inhibitor 3 (PI-3)?

<p>Protection from digestion</p> Signup and view all the answers

What is the approximate number of people affected by Trichuris trichiura infections worldwide?

<p>1.2 billion</p> Signup and view all the answers

What is the duration of the hepato-tracheal migration of Ascaris lumbricoides larvae?

<p>14 days</p> Signup and view all the answers

What is the estimated number of eggs produced by a female Ascaris lumbricoides per day?

<p>200,000 eggs</p> Signup and view all the answers

What is the estimated duration for Ascaris lumbricoides eggs to develop into the infective stage in the soil?

<p>2 to 3 weeks</p> Signup and view all the answers

What is the approximate global infection estimate of trichuriasis?

<p>604 to 816 million</p> Signup and view all the answers

What is the recommended treatment for trichuriasis according to the World Health Organization?

<p>Mebendazole 100 mg twice a day for 3 days</p> Signup and view all the answers

What is the consequence of heavy Trichuris infections on children's development?

<p>Poor appetite, wasting, stunting, and reduced cognitive development</p> Signup and view all the answers

What is the diagnostic technique that shows higher sensitivity compared to Kato-Katz and other concentration techniques?

<p>FLOTAC technique</p> Signup and view all the answers

What is the age group most frequently infected with trichuriasis?

<p>Children aged 5 to 15</p> Signup and view all the answers

What is the recommended frequency of mass drug administration for trichuriasis in high-prevalence communities?

<p>Twice a year</p> Signup and view all the answers

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