References. 1  Shmerling RH. 2  LeBlond RF, et al., eds. 3  Muscle cramps. 4  Sprains, strains and other soft tissue injuries.
Harmful bacteria that cause bacterial infections and disease are called pathogenic bacteria. Bacterial diseases occur when pathogenic bacteria get into the body and begin to reproduce and crowd out healthy bacteria, or to grow in tissues that are normally sterile.armful bacteria may also emit toxins that damage the body. Common pathogenic bacteria and the types of bacterial diseases they cause include: Escherichia coli and Salmonella cause food poisoning. Helicobacter pylori cause gastritis and ulcers. Neisseria gonorrhoeae causes the sexually transmitted disease gonorrhea.
Microorganisms, also called microbes, are extremely tiny organisms that can only be seen under a microscope. Microorganisms are one of the most diverse organisms and they include bacteria, fungi, archaea, protists, green algae, plankton and amoeba.Some scientists also classify viruses as microorganisms.Most microorganisms are single-celled, but few varieties are also multi-cellular. Microorganisms can be found virtually in every part of Earth from deep sea vents, hot springs, deep buried rocks to high up in the atmosphere.ome scientists also classify viruses as microorganisms. Most microorganisms are single-celled, but few varieties are also multi-cellular. Microorganisms can be found virtually in every part of Earth from deep sea vents, hot springs, deep buried rocks to high up in the atmosphere.