What Are The Causes Of Clinical Infectious Diseases

Introduction

The low resistance of the organism in front of the viruses and germs, and other infectious organisms and the low immunity that comes with our modern way of life might be the cause for clinical infectious diseases. However, as this aspect is known by any of you, the subject needs consideration that is more careful.

The clinical infectious diseases appear because of the aggression of germs on the human organism, or because of the parasites capable to provoke this disease, such as viruses, bacteria, or fungi.

History

Those organisms find the human body as a friendly environment, but because of lack of immunity, the infection will appear. The capacity of parasites to multiply in the organism is called virulence, and those parasites are able to create harmful substances called toxins, which destroy the tissues and human cells.

For the clinical infectious diseases, the fight between those germs is given by leucocytes – white globules that belong to the immune system. Their role is to attack the germs and to produce neutralizing substances called antibodies. If the number of antibodies is insufficient to fight the spreading infection, clinical infectious diseases appear.

It happens for an infection to go unnoticed, or to be treated with superficiality by some of us. During the incubation periods, the diseased person might not even be aware of the condition, and this is the most dangerous phase, as the person is able to infect other persons from the close environment.

Features

Sometimes, the infection might only appear in certain portions of the body, and in this case, it is called a local infection, and it manifests through rashes, a higher local temperature, and other manifestations that appear locally, like the infection appeared on a sting finger. This infection can resume to the finger, but if it is not treated, it might extend to the arm. In this case, the infection is complicated, as it already affected other tissues. In case if the diseased person doesn’t take the necessary measurements, the infection will almost certainly complicate, the harmful organisms might attack the blood cells, and in this case, the disease will spread in the whole body.

The clinical infectious diseases are classified considering the way they are spread: the episodic infection, that are also called sporadic, are the ones having simple causes such as flues, stings, cuts and other injuries brought to the superior layer of skin covering the body. The mass infections that affect a large number of people at the same time and those infections are transited fast. We are talking about malaria, yellow flue or pneumonia.

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