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Infectious and parasitic diseases
Infectious diseases - a disease whose causes are microorganisms: bacteria, viruses, fungi, parasites, or their toxins.
Susceptibility to infectious diseases depends on many factors: age, migrated and concomitant diseases, nutrition, vaccination. It changes during pregnancy and may depend on the emotional state. All these factors have an impact on the immune system - a person's ability to resist infections. Infectious process is the interaction of macro and micro-organism. At normal immunity prevents the penetration of the pathogen are a number of protective barriers; while reducing the power of at least one of these human increases susceptibility to infection.
Over the past decades in the treatment of infectious diseases is a huge step forward has been made. This was mainly thanks to a truly revolutionary discovery of the antibacterial properties of penicillin in 1940. With the advent of antibiotics it seemed to many that the infection will soon be of only historical interest. But since the Second World War it was created hundreds of drugs, not only antibacterial, and antiviral, antifungal, anti-parasitic, most of which are effective and safe. But despite this, infectious diseases are still a major cause of the deterioration of the health of millions of people around the world and one of the main causes of death. How to explain this? It must be remembered that infectious diseases - a special kind of disease, the cause of which - a living organism, which is able to mutate and evolve. Moreover, the process of the microorganisms is significantly faster than that of humans. At microbes to develop mechanisms that allow them to resist such a powerful weapon as drugs, created by man. Number of resistant to existing antibiotics forms of pathogenic bacteria becomes threatening. Infectious diseases, which in many countries were considered almost eradicated - tuberculosis, cholera, rheumatism, - resumed with renewed vigor. In many ways, this situation is caused by the uncontrolled intake of antibacterial drugs. Now in the pharmaceutical market there is a huge number of different antibiotics, the list of which is replenished every day. The choice inogopreparata, as well as the need to receive in each case must be determined only specialist that in our time is not always observed.
In recent years, it was discovered previously unknown pathogens of infectious diseases, with which people come into contact as a result of environmental change and migration. In addition, it became known that microbes are the cause of some diseases, once considered non-infectious. For example, a certain type of bacteria (Helicobacter pylori) plays a role in the development of gastric ulcers. Currently, there are many hypotheses about the role of viruses in the formation of benign and malignant tumors. that germs are the cause of some diseases, once considered non-infectious. For example, a certain type of bacteria (Helicobacter pylori) plays a role in the development of gastric ulcers. Currently, there are many hypotheses about the role of viruses in the formation of benign and malignant tumors. that germs are the cause of some diseases, once considered non-infectious. For example, a certain type of bacteria (Helicobacter pylori) plays a role in the development of gastric ulcers. Currently, there are many hypotheses about the role of viruses in the formation of benign and malignant tumors.
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