Correct Answer: C

Rationale: Community health nursing primarily concentrates on promoting health and preventing diseases within the community. It involves working with the community as a whole to improve health outcomes and prevent illnesses through education, interventions, and collaborations. This approach differs from individual patient care, hospital-based services, or specialized medical treatments, as it aims to enhance the well-being of the entire community by addressing broader health issues and promoting preventive measures.

Correct Answer: A

Rationale: Maternal HIV infection is a contraindication for breastfeeding because it poses a risk of transmission to the infant. HIV can be transmitted through breast milk, putting the baby at risk of acquiring the infection. Therefore, it is recommended that mothers with HIV do not breastfeed to prevent the transmission of the virus to their infants.

Correct Answer: B

Rationale: A previous allergic reaction to the vaccine is a contraindication for the administration of live vaccines. This is because individuals who have had a previous allergic reaction to a vaccine are at higher risk of developing a severe allergic reaction with subsequent doses. It is crucial to identify and avoid administering live vaccines to individuals with a history of allergic reactions to prevent potential adverse events.

Correct Answer: C

Rationale: Malaria is caused by the Plasmodium parasite that is transmitted to humans through the bite of infected Anopheles mosquitoes. These mosquitoes act as vectors in transmitting the disease from one host to another. The other choices, Measles, Tuberculosis, and Hepatitis B, are not vector-borne diseases. Measles is a highly contagious airborne viral infection, Tuberculosis is an airborne bacterial infection, and Hepatitis B is a bloodborne virus.

Correct Answer: B

Rationale: The World Health Organization recommends exclusive breastfeeding for the first 6 months of a child's life. During this time, breast milk provides all the necessary nutrients for the baby's growth and development, offering protection against infections and supporting optimal health outcomes. After 6 months, complementary foods can be introduced while continuing breastfeeding up to 2 years of age or beyond.