▶️ Answer/Explanation
The data shows a dramatic decrease in new HIV infections, from \(2.57\) to \(0.22\) per 1000 people. This decline is most likely due to improved public health measures. Options A, B, and D describe behaviors that would typically increase transmission rates, not decrease them. Option C, an increase in screening blood for transfusions, is a direct preventive measure that reduces one of the historical routes of HIV transmission. Widespread implementation of such screening, alongside other interventions like antiviral therapy and education, would logically lead to the observed reduction in new infections.
✅ Answer: (C)
✅ Answer: (C)
▶️ Answer/Explanation
HIV (Human Immunodeficiency Virus) is a blood-borne virus primarily transmitted through the exchange of certain body fluids, such as blood, semen, and vaginal secretions. Unlike waterborne or foodborne pathogens (like Cholera or Salmonella), HIV cannot survive in water or food. Therefore, clean water, hygienic food preparation, and sewage treatment do not affect its spread. The use of condoms acts as a physical barrier that prevents the exchange of sexual fluids during intercourse, significantly reducing the risk of transmission.
✅ Answer: (C)
✅ Answer: (C)