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Epidemiologic Measures in Parasitology Lecture

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Questions and Answers

What does prevalence of infection refer to?

The percentage of individuals in a population estimated to be infected with a particular parasite species at a given time (correct)
The number of new cases of infection appearing in a population
The number of worms per infected person
The fall in egg counts after deworming

What is the intensity of infection related to in parasitology?

The number of new cases of infection appearing in a population
The clinical consequences of infections that affect an individual's well-being
The fall in egg counts after deworming
The burden of infection related to the number of worms per infected person (correct)

What does cure rate refer to in the context of deworming?

The fall in egg counts after deworming
The number of previously positive subjects found to be egg negative after deworming (correct)
The percentage of individuals in a population infected with at least one parasite
The use of anthelmintic drugs in an individual or a public health program

What is morbidity in relation to parasitology?

The clinical consequences of infections or diseases that affect an individual's well-being (B) Signup and view all the answers

What is the main goal of disease eradication?

Permanent reduction to zero of the worldwide incidence of infection caused by a specific agent (A) Signup and view all the answers

How can morbidity control be achieved according to the text?

Through selective deworming of individuals or groups at risk of morbidity (C) Signup and view all the answers

What does environmental sanitation involve according to the text?

Provision of adequate facilities for safe disposal of human excreta (B) Signup and view all the answers

What distinguishes disease elimination from disease eradication?

Reduction to zero of the incidence in a defined area vs. worldwide (C) Signup and view all the answers

How do most parasitic organisms attain sexual maturity?

By spending their entire lives within a host with one generation after another (A) Signup and view all the answers

What is a common mode of transmission for Clonorchis and Opisthorchis?

Ingesting raw or improperly cooked freshwater fish (C) Signup and view all the answers

Which of the following is a potential portal of entry for parasitic infections according to the text?

Skin exposure to soil (D) Signup and view all the answers

Why is it mentioned that as the life cycle of a parasite becomes more complicated, the chances for individual parasites to survive decrease?

Due to the complexity of passing through different stages in intermediate hosts (A) Signup and view all the answers

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