What is defined as the presence of infectious organisms on or in various objects?

Contamination is defined as the presence of infectious organisms on or in various objects. This can include surfaces, instruments, or other materials that have been exposed to pathogens. It is an important concept in infection control, as contaminated items can lead to the spread of disease if they come into contact with humans or come into use in medical procedures. Recognizing contamination is crucial for EMTs, as it guides their actions in ensuring safety for themselves and their patients, such as through the use of proper sterilization techniques and personal protective equipment.

In the context of the other options, infection refers specifically to the invasion and multiplication of pathogens in the body, leading to illness. Infestation typically refers to the presence of parasites living on or in a host, rather than pathogens in inanimate objects. Pollution usually denotes the introduction of harmful substances into the environment but does not specifically address infectious organisms on objects. Thus, contamination most accurately describes the presence of infectious organisms on or in various objects.