Complex sentence: The discovery of disease-causing pathogens is an important activity in the field of medical science, as many viruses, bacteria, protozoa, fungi, helminthes and prions are identified as a confirmed or potential pathogen.
Split into simpler sentences: The discovery of disease-causing pathogens is an important activity in the field of medical science. Many viruses, bacteria, protozoa, fungi, helminthes and prions are identified as a confirmed or potential pathogen.