HIV infection is transmitted in all of the following ways EXCEPT which one?

HIV (Human Immunodeficiency Virus) infection is primarily spread through specific types of contact that allow for the virus to enter the bloodstream. The correct choice in this context is the option that represents a mode of transmission that does not facilitate the transfer of the virus.

Transmission through sexual contact occurs when infected bodily fluids (semen, vaginal fluids, blood) come into contact with mucous membranes or are directly exchanged between partners. This is one of the most common ways HIV is transmitted.

Sharing needles is another significant route of transmission, particularly among individuals who inject drugs. Blood containing HIV can remain in the needles and syringes, so sharing them presents a high risk of infection.

Blood transfusions also carry the risk of HIV transmission if the blood has not been properly screened. Historically, before rigorous testing protocols were established, transfusions were a common way to contract HIV.

In contrast, sneezing and coughing do not facilitate the spread of HIV. The virus is not transmitted through respiratory droplets like some other infectious agents (e.g., the flu or COVID-19). Therefore, this option does not represent a viable method of HIV transmission, making it the correct choice in the context of the question.