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

Correct Answer: C

Rationale: The correct answer is C: Vaccination. Vaccination is the most effective method for preventing the spread of infectious diseases because it helps build immunity against specific pathogens, reducing the likelihood of infection and transmission. Vaccines train the immune system to recognize and fight off harmful microorganisms. Antibiotic treatment (A) is used to treat bacterial infections, not prevent the spread of diseases. Quarantine (B) is effective in isolating infected individuals but does not prevent the initial spread of diseases. Nutritional supplementation (D) can support overall health but is not a direct method for preventing infectious diseases.

Correct Answer: C

Rationale: Tertiary prevention focuses on managing and improving quality of life for individuals with existing health conditions. Physical rehabilitation programs fall under this category as they help individuals recover and regain functioning after an illness or injury. This intervention aims to prevent further complications and disabilities. Vaccination campaigns (A) and health education seminars (B) are examples of primary and secondary prevention, focusing on preventing diseases before they occur or detecting them early. Early disease screening (D) is also a form of secondary prevention, aiming to detect diseases in their early stages before symptoms appear.

Correct Answer: C

Rationale: The correct answer is C because a community health nurse focuses on promoting health and preventing disease within the community through education, advocacy, and preventive care. This role involves working with individuals, families, and communities to improve overall health outcomes. A: Providing acute care in hospitals is incorrect as this is typically the role of hospital nurses, not community health nurses. B: Conducting surgeries is incorrect as this is a task performed by surgeons or operating room nurses, not community health nurses. D: Diagnosing and treating medical conditions is incorrect as this falls under the responsibility of healthcare providers such as physicians or nurse practitioners, not community health nurses.

Correct Answer: B

Rationale: The correct answer is B: Improving access to high-quality immunization services. GIVS aims to ensure that everyone has access to vaccines and immunization services to prevent vaccine-preventable diseases. This objective aligns with the overall goal of increasing vaccination coverage and reducing the burden of vaccine-preventable illnesses globally. Choice A is incorrect as GIVS focuses on communicable diseases, not non-communicable diseases. Choice C is incorrect as GIVS aims to improve access to immunization services, not necessarily reduce the cost of healthcare. Choice D is incorrect as GIVS does not specifically target increasing the number of healthcare professionals, but rather improving access to immunization services.

Correct Answer: D

Rationale: The correct answer is D: Folic acid. Folic acid is essential for preventing neural tube defects because it plays a crucial role in DNA synthesis and cell division, particularly during early fetal development. Adequate folic acid intake before and during pregnancy can significantly reduce the risk of neural tube defects. Iron (A), Vitamin C (B), and Calcium (C) are important nutrients for overall health but do not have a direct role in preventing neural tube defects. Iron is vital for red blood cell production, Vitamin C is an antioxidant that supports the immune system, and Calcium is essential for bone health. However, for preventing neural tube defects specifically, folic acid is the essential nutrient.