Articles 
Hi-Tech
Cars
Business and finance
Household appliances
House and apartment
Medicine
Fashion and style
Psychology
Miscellaneous
Sport
Tourism
Digital equipment
Diseases   Hygiene of food   Gynecology   Drugs   The other   
Navigation
Advertizing

What is AIDS and HIV

Epidemic of the most unclear and horrible disease of the present began more than twenty years ago. The acquired immunodeficiency syndrome called by AIDS which was called "plague of the 20th eyelid" represents big threat to mankind to this day. Its prompt distribution and lack of possibility of treatment represent an enormous problem of modern medicine.

Despite continuous researches of scientists and laborious work in fight against a fatal virus there are no justified means for its treatment now. InfoAdvisor.net urges to understand that HIV and AIDS are not synonyms of one disease at all. What is HIV is an infectious disease which can lead to a stage of development of AIDS.

Definition

Acquired immunodeficiency syndrome represents the violation of normal operability of immune system of the person caused by action of HIV infection and which is considered its the finishing, fourth stage. Symptoms of this disease and its clinical picture can have the most different manifestations. The main sign by which existence of a virus in a human body is determined is the blood test of "CD4+" determining number of T-lymphocytes. This indicator determines the level of oppression of protective system of an organism by an immunodeficiency virus. It is considered that the number of cages of CD4 in blood of the healthy person can fluctuate in the range from 600 to 1800 C/ml of blood. It is also necessary to mean that at different stages of activity the maintenance of these cages in blood can differ, depending on the general state of health at the time of carrying out the analysis.

The quantity of CD4 significantly decreases for 2-3 weeks after penetration of a virus into the patient's organism. Depending on organism resilience level, this coefficient again increases, but already never reaches the reference value. The indicator which is considered the CD4 control point, is usually stabilized in a time span from 3 to 6 months. Thus, extent of defeat of an organism defines the average level of quantity of T-lymphocytes which systematic falling makes about 50 cages/mm3 in a year. At the most part of people the immune system is capable to control effectively HIV therefore it can not prove within long years in any way.

HIV stage

The fatal virus of an immunodeficiency is capable to exist in an organism of the infected patient for 10-12 years, without showing immunity defeat signs at all. A source of direct infection is the sick person. Infection is carried out through contact with the liquid environment of an organism of the patient. It can be blood, breast milk, a vaginal secret and sperm. Therefore, the infection can be transmitted at blood transfusion, application of one syringe with the infected person, by means of sexual contact (oral, vaginal or anal), and also from sick mother to the child in the course of feeding or incubation. Modern epidemiologists unanimously reject possibility of transfer of a virus in the airborne way or by means of fecal and oral contact because allocation of an infection with urine, a stake and a phlegm absolutely insignificantly. The quantity of susceptible cages in airways and a digestive tract is also insignificant. Getting into an organism of the healthy person, HIV infection, first of all, affects dendritny cages, macrophages and T-lymphocytes. The elementary units of a structure of an organism affected with a virus inevitably perish during certain time. Destruction of cages of CD8+ is caused by activity of T-lymphocytes because population of CD4+ of T-lymphocytes is constantly reduced, inevitably reducing cellular immunity. When their contents reaches critical level, the person becomes vulnerable to action of various opportunistic infections. Therefore it is necessary to divide accurately concept VIChA and AIDS which is the last stage of danger of death.

AIDS stage

What is AIDS is the last stage of progressing of HIV infection at which indications of the analysis of "CD4+" appear lower than a level of 200 C/ml of blood. In it the period occurs the maximum defeat of protective functions of a human body in this connection, prosperity of a number of opportunistic infections and tumoral educations is found. AIDS will be defined by decrease in resilience of a human body to such an extent that any disease in the most short time reaches a final stage of the development. At this stage of the patient can die in few days of usual cold or alive decay from penetration of any infection. Such symptoms, as belong to the brightest signs of manifestation of a stage of AIDS: the strengthened sweating, sharp loss of weight, fever, a fever and the progressing growth of cancer educations. If at the first stages of development of HIV infection of the patient can not guess for years its existence, at the stage finishing it he perfectly understands that is incurably sick. The sickly look can distinguish such person easily in crowd on him dreadfully. However it is not possible to help it, unfortunately, already at all.

Irrespective of as far as the healthy lifestyle is conducted by the person, he always needs to remember that HIV-positive people becomes every year more and danger of infection becomes more and more menacing. It is necessary to keep the maximum vigilance in the questions connected with sexual communications and possibilities of contact of blood cages with the patient's blood. However it is not necessary to show excessive concern in everyday life. HIV infection is not transferred at joint meal, during handshake, by means of a sting of insects, and also from bathing in one reservoir with the patient. Also you should not treat with neglect to those to whom has not the luck to avoid infection, and always to remember that the misfortune can happen to everyone, irrespective of its social status, level of material security and a way of life.

Read also
New articles
It is interesting

On September 3, 2008 in Kenya snow for the first time dropped out