Amongst the many reported health benefits of chocolate (including its ability to lower heart disease risk, prevent wrinkles and boost the mood), the popular treat is also a great pick-me-up snack, which is great news for chocoholics.
Credit: Dr. Libero Ajello/CDC. In addition to viruses and bacteria, there are three other major types of microbes that can cause infectious diseaseâand one newly discovered type. As with viruses and bacteria, not all of the species in each of these categories are infectious to humans. But many of the worldâs most prevalent infectious diseases are caused by microbes that are included in the groupings below. Fungi cause a wide variety of diseases in humans, ranging from Athleteâs foot to ringworm to deadly histoplasmosis.
The term 'germ' actually refers to any microorganism, especially those microorganisms that cause disease. Included in this category are certain viruses, bacteria, and fungi.nimals, plants, fungi, and bacteria are all subject to viral infection. But viruses tend to be somewhat particular about what type of cells they infect. Plant viruses are not equipped to infect animal cells, for example, though a certain plant virus could infect a number of related plants.