Which of the following is an example of a preventive measure in public health?

Correct Answer: B

Rationale: The correct answer is B: Vaccination. Preventive measures aim to prevent diseases before they occur. Vaccination helps the immune system recognize and fight specific pathogens, reducing the risk of infection and disease transmission. Chemotherapy (A) is a treatment for cancer, not prevention. Radiation therapy (C) and surgical intervention (D) are also treatments rather than preventive measures. Vaccination stands out as the only option that directly addresses disease prevention, making it the correct choice.

Correct Answer: D

Rationale: Step 1: Weight monitoring is crucial to assess maternal health and fetal growth. Step 2: Blood pressure measurement helps detect and manage hypertension in pregnancy. Step 3: Nutritional counseling ensures proper intake of nutrients for maternal and fetal well-being. Step 4: All components (A, B, C) are essential for a comprehensive antenatal care program to address different aspects of maternal and fetal health. Thus, D is the correct answer. Weight monitoring, blood pressure measurement, and nutritional counseling are all vital components of antenatal care to ensure the well-being of both the mother and the baby.

Correct Answer: B

Rationale: The correct answer is B: Administering antiretroviral therapy. Antiretroviral therapy helps reduce the viral load in the mother, decreasing the risk of transmitting HIV to the child during pregnancy, childbirth, and breastfeeding. It is a proven method recommended by the World Health Organization. A: Exclusive breastfeeding can increase the risk of HIV transmission to the child if the mother is HIV positive. C: Using unsterilized medical equipment can increase the risk of HIV transmission. D: Avoiding prenatal care can lead to missed opportunities for prevention and treatment interventions.

Correct Answer: B

Rationale: Exclusive breastfeeding for the first 6 months provides complete nutrition for the infant, meeting all their dietary needs. Breast milk contains essential nutrients and antibodies that support healthy growth and development. It also helps to strengthen the baby's immune system and reduce the risk of infections. Ensuring complete nutrition through breastfeeding is crucial for optimal health outcomes in the early stages of life. Preventing childhood obesity, increasing the risk of allergies, and delaying cognitive development are not directly linked to exclusive breastfeeding and are therefore incorrect choices.