What is a fomite?

A fomite is defined as an inanimate object that can be contaminated and serve as a vehicle for the transmission of pathogens, such as bacteria and viruses. Common examples of fomites include surfaces like doorknobs, countertops, and medical equipment that do not actively contribute to the infection process but can harbor infectious agents.

When an individual comes into contact with a fomite, they may inadvertently transfer the microorganisms to their skin or mucous membranes, facilitating the spread of infections. This concept is particularly important in veterinary and healthcare settings, where controlling the spread of disease is crucial for the health of both animals and humans.

The other options describe different biological concepts but do not accurately reflect the definition of a fomite. Antibodies are immune proteins, biological agents transmitted by insects refer to vector-borne diseases, and living tissue that aids in immunity typically pertains to immune-related cells and functions, which further illustrates that only the definition of a fomite directly correlates with the provided choices.