👉 Epiotic is a term used in medicine to describe an infection that occurs when a person's immune system mistakenly attacks their own body. It can be caused by bacteria, viruses, or parasites, and it can lead to serious complications such as pneumonia, meningitis, and sepsis. In the context of epiodeses, an epiotic is defined as one where a patient has been infected with a virus that had previously been eradicated through vaccination or other means. This means that