In which areas of the world are people most at risk for HIV infections?

A: Eastern Europe and Latin America
B: North America and South and Southeast Asia
C: Sub-Saharan Africa and South and Southeast Asia
D: Latin America and Sub-Saharan Africa

C: Sub-Saharan Africa and South and Southeast Asia

These regions have the highest prevalence of HIV infections in the world. Factors such as poverty, lack of access to healthcare, cultural stigma, and high rates of unprotected sex contribute to the high risk of HIV infections in these areas.