Which of the following is an example of a waterborne disease?

Correct Answer: A

Rationale: The correct answer is A: Hepatitis A. Waterborne diseases are caused by pathogens that are transmitted through contaminated water. Hepatitis A is a viral infection that spreads through the consumption of contaminated water or food. It affects the liver and is commonly associated with poor sanitation and hygiene. Influenza, Measles, and Tuberculosis are not waterborne diseases. Influenza and Measles are viral infections spread through respiratory droplets, while Tuberculosis is a bacterial infection primarily transmitted through the air. Hepatitis A is the only choice that aligns with the definition of a waterborne disease.

Correct Answer: A

Rationale: The correct answer is A: Maternal HIV infection. Breastfeeding is contraindicated in mothers with HIV due to the risk of transmission to the infant through breast milk. HIV can be transmitted through breast milk even if the mother is on antiretroviral therapy. Maternal diabetes, anemia, and hypertension are not contraindications for breastfeeding as long as they are well managed. Breastfeeding is actually beneficial in managing diabetes and anemia. Hypertensive mothers can breastfeed unless there are complications that require specific medications that may be unsafe for the infant.

Correct Answer: B

Rationale: The correct answer is B: To boost the immune system. Vitamin A is essential for maintaining a healthy immune system by supporting the production and function of white blood cells. This helps the body fight off infections and illnesses. Administering Vitamin A to children can help prevent deficiencies and strengthen their immune response. Explanation of why the other choices are incorrect: A: Vitamin D is more closely associated with improving bone health, not Vitamin A. C: Cognitive development is primarily influenced by nutrients like iron and omega-3 fatty acids, rather than Vitamin A. D: Anemia is usually prevented by iron supplementation, not Vitamin A.

Correct Answer: A

Rationale: The correct answer is A: Hepatitis A. Waterborne diseases are caused by pathogens that are transmitted through contaminated water. Hepatitis A is a viral infection that spreads through the consumption of contaminated water or food. It affects the liver and is commonly associated with poor sanitation and hygiene. Influenza, Measles, and Tuberculosis are not waterborne diseases. Influenza and Measles are viral infections spread through respiratory droplets, while Tuberculosis is a bacterial infection primarily transmitted through the air. Hepatitis A is the only choice that aligns with the definition of a waterborne disease.

Correct Answer: C

Rationale: The correct answer is C: 12 months. The first dose of the MMR vaccine is typically administered at 12 months of age because this is when a child's immune system is more developed to respond effectively to the vaccine. Administering it earlier may not provide adequate protection. Choice A (At birth) is incorrect because newborns have maternal antibodies that can interfere with the vaccine's efficacy. Choice B (6 months) is too early as infants need time to develop their immune system. Choice D (18 months) is also incorrect as delaying the vaccine may leave the child vulnerable to diseases like measles, mumps, and rubella.

Correct Answer: D

Rationale: The correct answer is D: Focusing solely on curative care. The Maternal and Child Health (MCH) program aims to prevent illness and promote health in pregnant women, mothers, infants, and children. Focusing solely on curative care does not align with the preventive and promotive goals of the MCH program. Reducing infant mortality, improving maternal health, and providing family planning services are integral components of the MCH program that aim to enhance the overall well-being of mothers and children. By emphasizing prevention and health promotion, the MCH program aims to address the root causes of health issues rather than solely focusing on treating illnesses after they occur.

Correct Answer: C

Rationale: The correct answer is C: Infant mortality rate. This indicator reflects the number of infants who die before reaching one year of age per 1,000 live births. It is a crucial measure of the overall health of a population as it reflects the quality of healthcare, nutrition, and living conditions. High infant mortality rates indicate poor health outcomes and inadequate healthcare services. A: Literacy rate is not directly related to measuring the health status of a population. B: GDP measures the economic performance of a country and does not directly reflect the health status of its population. D: Employment rate is an indicator of the labor market situation, not specifically related to health status measurement.

Correct Answer: B

Rationale: The correct answer is B: Airborne. Tuberculosis is primarily transmitted through the air via droplets released when an infected person coughs or sneezes. These droplets contain the bacteria that cause TB, which can then be inhaled by others and infect their lungs. This mode of transmission is supported by scientific evidence and is the most common way TB spreads. Choice A: Vector-borne is incorrect because tuberculosis is not transmitted by insects or animals. Choice C: Waterborne is incorrect as TB is not typically spread through contaminated water. Choice D: Fecal-oral is incorrect since TB bacteria are not typically found in feces and transmitted through oral ingestion.

Correct Answer: C

Rationale: The correct answer is C: Folic acid. Folic acid is essential for fetal development, especially in preventing neural tube defects. It aids in the formation of the neural tube, which develops into the baby's brain and spinal cord. Pregnant women are advised to take folic acid supplements to reduce the risk of these defects. Rationale for other choices: A: Vitamin C - While important for overall health, Vitamin C does not specifically reduce the risk of neural tube defects. B: Vitamin D - Important for bone health, but not directly linked to reducing neural tube defects. D: Iron - Necessary for preventing anemia during pregnancy, but not specifically known to reduce the risk of neural tube defects.