‘3 by 5 Initiative’ was launched in developing countries to combat
**Core Concept**
The '3 by 5 Initiative' was a global health initiative launched by the World Health Organization (WHO) to achieve the goal of providing antiretroviral therapy (ART) to 3 million people living with HIV/AIDS in low- and middle-income countries by the end of 2005.
**Why the Correct Answer is Right**
The initiative aimed to expand access to HIV treatment in resource-limited settings by providing training and support to healthcare workers, improving the supply chain for essential medicines, and strengthening health systems. This initiative was a response to the growing need for HIV treatment in developing countries, where the burden of the disease was highest. The '3 by 5 Initiative' played a crucial role in scaling up HIV treatment and reducing mortality rates among people living with HIV/AIDS in developing countries.
**Why Each Wrong Option is Incorrect**
**Option A:** Tuberculosis control - Although TB control is an important public health issue in developing countries, the '3 by 5 Initiative' was specifically aimed at combating HIV/AIDS.
**Option B:** Malaria control - Malaria control programs were also implemented in developing countries, but they were separate from the '3 by 5 Initiative'.
**Option C:** Polio eradication - The '3 by 5 Initiative' was not related to polio eradication efforts, which were focused on achieving global polio eradication by 2000 (later extended to 2018).
**Clinical Pearl / High-Yield Fact**
The '3 by 5 Initiative' demonstrated that with global commitment and resources, it is possible to achieve significant progress in expanding access to life-saving treatments in resource-limited settings.
**Correct Answer: D. HIV/AIDS prevention and treatment**