Which of the following is considered a bloodborne pathogen?

Hepatitis B is classified as a bloodborne pathogen because it is a virus that is transmitted primarily through exposure to infected blood and other bodily fluids. It can be spread via activities such as sharing needles, sexual contact, or from mother to child during childbirth. The presence of the virus in these fluids allows it to enter the bloodstream, which is a key aspect of what defines a bloodborne pathogen.

In contrast, the other options listed—Influenza, the common cold, and pneumonia—are primarily airborne or droplet-transmitted diseases. Influenza and the common cold are caused by viruses that are primarily spread through respiratory droplets when an infected person coughs or sneezes. Pneumonia, often caused by bacteria or viruses, can also be transmitted through inhalation of respiratory droplets. None of these conditions are typically transmitted through blood or direct contact with blood, distinguishing them from bloodborne pathogens like Hepatitis B.