which of the following is the most effective method of preventing the spread of infectious diseases
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1. Which of the following is the most effective method for preventing the spread of infectious diseases?

Correct answer: C

Rationale: Vaccination is the most effective method for preventing the spread of infectious diseases as it helps in developing immunity against specific pathogens, reducing the likelihood of infection and transmission within a population. Antibiotics are used to treat infections, not prevent their spread. Quarantine limits the contact of infected individuals but does not provide long-term prevention. Nutritional supplementation can support overall health but is not a primary method for preventing infectious diseases.

2. What is the primary purpose of conducting an epidemiologic investigation?

Correct answer: A

Rationale: The primary purpose of conducting an epidemiologic investigation is to delineate the etiology of the epidemic, which involves identifying the cause or origin of the disease outbreak. This process helps in understanding how the disease spreads, its risk factors, and developing strategies for control and prevention.

3. Which of the following is a key principle of Primary Health Care (PHC)?

Correct answer: B

Rationale: Community participation is a fundamental principle of Primary Health Care (PHC) as it involves the active involvement of individuals, families, communities, and organizations in the planning and delivery of healthcare services. This ensures that services are culturally appropriate, accessible, and acceptable to the community, leading to better health outcomes.

4. On the other hand, Operation Timbang is _____ prevention?

Correct answer: B

Rationale: Operation Timbang is a form of secondary prevention. It aims to identify individuals in the population who are malnourished, allowing for early diagnosis and timely treatment. Secondary prevention focuses on early detection and intervention to prevent the progression of a health condition or disease.

5. Which nutrient is known to reduce the risk of neural tube defects when taken by pregnant women?

Correct answer: C

Rationale: Folic acid, a B vitamin, is essential for the development of the neural tube in the early stages of pregnancy. Adequate intake of folic acid before conception and during early pregnancy significantly reduces the risk of neural tube defects in the baby. It is recommended that women of childbearing age consume folic acid daily to support a healthy pregnancy.

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