Abnormal prions proteins whose presence ...

Agent (pathos "suffering, passion" and CEM ^ g

genHs (generation) "manufacturer") or an infectious agent - in spoken language, shoot it or

such as, or

, which is in his or. There are several surfaces, including road which pathogens can penetrate into the host, the main routes have different episodic time, but

has the longest and most stable potential for harboring the parasite. The body contains many natural orders of protection against some common pathogens (for example) as a man, as well as some "useful" are present in the human body. However, if the immune system or "good" bacteria is damaged in any way (eg by,

(HIV) or

taken to kill other pathogens)

pathogens that have been held at bay can multiply and cause harm to the host. Such cases are called. Some pathogens (eg bacteria, which may be caused by a virus

. and simple) are responsible for huge numbers of casualties and have had numerous effects on strattera cost the affected groups. Special attention in our time is HIV, which is known to be infected by several million people globally, and the virus

Today, when many medical achievements have been made to protect against infection pathogens through the use of, and pathogens continue to threaten human life. Social achievements, such as,, and

reduced the threat from some pathogens. Not all pathogens are negative. B pathogens is one of the "three P" (, pathogens, and

), which are natural or used for the suppression of the population. Viruses [Pathogenic mainly those families: bacteria,,,,,,,,,,. Some well-known pathogenic viruses causing smallpox, influenza,,,,, and rubella. Viruses typically range from 20-300 nanometers in length. [Although the vast majority of bacteria are harmless or beneficial to the body of them, some pathogenic bacteria can cause infections. The most common bacterial disease caused by bacteria that affects only about 2 million people, mostly in Africa south of Sahara. Pathogenic bacteria contribute to other globally important diseases, such as that may be caused by bacteria, such as

and, and foodborne diseases that may be caused by bacteria, such as

and. Pathogenic bacteria and cause infections, such as,, and

. Bacteria can often be killed, because antibiotics are cell wall in an external destroyed, and then DNA. They generally range from 1 to 5 micrometers in length. [Fungi kingdom consists eukaryotic microbes, which are usually, but can cause disease in humans, animals and plants. Fungi are the most common cause diseases of crops and other plants. Life-threatening fungal infections in humans most often occur in immunocompromised patients or vulnerable people with weakened immune systems, although fungi are common problems in the immunocompetent population pathogens of the skin, nails or yeast infections. Most antibiotics that act on bacterial pathogens can not be used to treat fungal infections because fungi and their hosts, as in eukaryotic cells. Most clinical fungicides belong. The typical size of fungal spores 1-40 microns in length. [Some eukaryotic organisms such as

and cause disease. One of the best known diseases caused by protozoa of the genus

is. They can range from 3-200 microns in length. [Prions are infectious agents that do not contain. Abnormal prions proteins, whose presence causes certain diseases, such as

(BSE) and. Opening of prions as a new class of pathogens has led to get in. [Studies on the ability of pathogens causing diseases shows the many and various kinds of existence of pathogenicity and virulence factors encoded in the genetic material of pathogens, which facilitates the possibility microbes cause disease. Microbiologists generally agree that it is not in the interests of the infectious agent to kill his boss, because it limits the ability to multiply and spread to new hosts. Factors of virulence usually serve some useful function in the life cycle of microbes, such as permission to distribute in the body, or attachment to host cells and cause disease and death take only chance. Long-pathogen interaction with host populations over many generations, often leading to adaptation and host-pathogen, resulting in less disease. Thus, especially deadly agents is often assumed that the recently introduced into the local population and are not yet well adapted. [Transfer of pathogens occurs through various routes, including air, direct or indirect contact, sexually, through blood, breast milk or other body fluids, and through fecal-oral route. One of the main ways in which food or water contaminated by untreated sewage in

food or arable land, resulting in people who eat or drink contaminated sources become infected. In

Naibolee wastewater discharged into the environment or on arable lands, and even there the periodic system failures resulting. [[Pathogen in humans and animals. produces the most powerful, leading to death. pathogen in most cases, the bacteria that causes and notorious

sores (called "etiological agent of SPP. [[[. << >>