Diseases Infectious Agent

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Infectious disease characterized by prnyebab factor (source of the disease) of its prevention, so that we can prevent or guard against the possibility of developing the disease.

Causes of Infectious Diseases
Infectious diseases are generally caused by a disease that causes can be grouped into: viruses, rucketsia, bacteria, fungi, protozoa, worms. Or microorganisms living things as the holder of an important role in the epidemiology of infectious diseases is a cause or known infectious agents. Various infectious agents are :

1. Virus
Virus is a microorganism that is very subtle. Because it is so subtle we can not see with ordinary microscopes. This requires an electron microscope, the microscope that could raise up to 1000000 times. The types of viruses can also cause many diseases, among which may cause measles, mumps, influenza, selesa, poliomyelitis, rabies, trachoma, and others. Bird flu can be transmitted from chickens to humans a suitable and a weak body condition.

2. Rickets
Rickets is also living things are also very smooth, but not as smooth as a virus. Arguably greater magnitude between viruses and bacteria. To be able to see rickettsia also needed an electron microscope. Diseases caused by rickets are : shoptyphus, scrubtyphus, exanthematicus and others.

3. Bacterium
Bacteria are very delicate organisms, can not be seen with the eye. To be able to see it required a microscope. With this tool organisms-organisms that can be raised up to a hundred times. Bacterial body consists of a variety of substances that have not been clear egg structure, not berzat green leaf, the point is not clear. How to multiply them is by dividing. There are bacteria that cause disease – the disease, those that are not profitable and even some human.

According to the shape of bacteria can be divided into several groups :

•    Coccus shaped like a bullet. This also is manifold : staphylococcus, pneumococcus, streptococcus, gonococ, meningococ.
•    Basil : shaped like a rod. Various kinds of bacilli: bacillus tuberculosis, leprosy bacillus, dysenterie bacilli, tetanus bacilli, bacilli tests, etc.
•    Spiral : shaped like a spiral.
•    Vibrio can be included in this group (shaped like a comma).

Which can cause diseases yaws and syphilis are called spiral countryman spirocchaet. Most of the bacteria – bacteria that live in the wild and the life of things – inanimate objects. Without these bacteria then the world will be filled with the carcasses of growing – plants or animals – animals, so that the bacteria benefit humans.

Bacteria – bacteria that lives from things – inanimate objects is called the sporophyte. Among the bacteria – bacteria that lives there is a small group is always harmful creatures – creatures that host. Bacteria – bacteria that are called parasites. Carrying creatures called the host. Bacteria that can cause disease are called bacteria – bacterial pathogens.

4. Fungus
Fungus is a living thing that is included in the group grow – plants that are not green leaf berzat, so dependent on other living things or depending on the food that is readily available. There is a fungus whose body consists of only one cell, (eg cells – yeast cells), those that consist of many cells in a row – and the series deviate from each other like strands, called micellium.

There are fungus that live in the wild, there is life on growing – other plants, those that live on animals – animals and humans. Among these there is a beneficial, others detrimental (cause of disease – the disease). Types of beneficial fungi among other human beings is Penicillium notatum. From these molds are made of a famous drug Penicillin. From a fungus called Streptomyces griseus drug called streptomycin. The above mentioned drugs known as antibiotics. Disease in humans caused by the fungus among others is phlegm.

5. Worms
Class of worms, namely a wide – range: stomach worms (roundworms), pinworms, tapeworms, hookworms, and so on.




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