sentence: Infection is when another organism gets into a person's body and causes harm.
sentences_before: Some diseases are caused by 'infection'.
sentences_after: These four kinds of infectious agents cause most infectious disease. There are other kinds though. Prions are a form of virus that are basically abnormal clumps of proteins. We are not even sure that prions are alive. But they act just like other infectious diseases.
concept_name: infection
headings: Infection
categories: Infectious diseases Microbiology Parasitism