What is the main mode of transmission for HIV?

The main mode of transmission for HIV is through blood, sexual contact, and mother-to-child transmission. Understanding these routes is crucial for prevention and education efforts regarding AIDS and HIV.

Blood transmission occurs through sharing needles among drug users, transfusions with contaminated blood, or any exposure to infected blood. Sexual contact is a particularly significant route, with the virus being present in bodily fluids such as semen, vaginal fluids, and rectal secretions, making unprotected sexual activity a high-risk behavior. Mother-to-child transmission can happen during childbirth or breastfeeding, highlighting the importance of testing and preventive measures for pregnant individuals living with HIV.

Other options, while relevant to different diseases, do not pertain to HIV transmission. Food and water typically carry pathogens like bacteria and viruses, airborne droplets are associated more with respiratory infections, and surface contact is relevant in spreading certain viruses but not HIV. Therefore, option C accurately encompasses the primary modes of HIV transmission, reinforcing the necessity of safe practices to prevent the spread of the virus.