Which of the following is an example of a bloodborne pathogen?

Bloodborne pathogens are infectious microorganisms present in human blood that can cause disease in humans. These pathogens can be transmitted through blood or other potentially infectious materials. The primary example of a bloodborne pathogen is HIV (Human Immunodeficiency Virus), which is known to be transmitted through direct exposure to blood, sexual contact, and other bodily fluids.

Other options such as the influenza virus, common cold virus, and West Nile virus are primarily transmitted through different routes. The influenza virus and common cold virus are respiratory pathogens spread mainly through respiratory droplets when an infected person coughs or sneezes. Meanwhile, West Nile virus is primarily transmitted by mosquitoes and not through blood in the same way as bloodborne pathogens like HIV.

Therefore, HIV is correctly classified as a bloodborne pathogen due to its mechanism of transmission and the significant health risks it poses through blood contact.