References. 1  Shmerling RH. 2  LeBlond RF, et al., eds. 3  Muscle cramps. 4  Sprains, strains and other soft tissue injuries.
Microorganisms can be, according to their characteristics, divided into several groups: 1  bacteria, viruses, certain fungi and parasites. 2  pathogenic (capable of causing disease), non-pathogenic, and opportunistic (causing disease when they have an opportunity, like in people with low immune system).xamples of bacteria pathogenic for a human are: 1  Staphylococcus aureus, causing skin infections, pneumonia, infection of the heart valves, etc. 2  Streptococcus pyogenes, causing âstrep throatâ, cellulitis, etc. 3  Neisseria gonorrheae, causing gonorrhea.
Diseases caused by microorganisms in humans are known as pathogenic diseases. The word pathogen is derived from a Greek word that means 'giving rise to suffering'. These diseases can be caused by a number of agents like bacteria, viruses, fungi, etc.All these pathogenic agents can lead to a variety of diseases and conditions. There are many good bacteria that live on and within the human body systems. These good bacteria help our immune system keep away pathogenic bacteria.hese diseases can be caused by a number of agents like bacteria, viruses, fungi, etc. All these pathogenic agents can lead to a variety of diseases and conditions. There are many good bacteria that live on and within the human body systems. These good bacteria help our immune system keep away pathogenic bacteria.