INTRODUCTION
It is well known that the trend of intensive spread of viral diseases is growing in the world, which have a high percentage of the formation of a chronic infectious process and pose a threat to the survival of mankind. According to various researchers, the frequency of the formation of a chronic infectious process in the outcome of acute viral hepatitis B (HBV) reaches 40-60%, in the outcome of acute viral hepatitis C (HCV) – up to 80%, and in HIV infection (HIV) – up to 100%. Persons infected with HBV, HCV and HIV are sources of infection and infection of healthy people. These infections lead to disability of patients, the development of cirrhosis of the liver, hepatocellular carcinoma, Kaposi's sarcoma, lymphogranulomatosis, deep secondary immunodeficiency in the outcome of the disease, in a high percentage of cases end in death. The problem of curing HIV infection, chronic viral hepatitis B (CHBV) and chronic viral hepatitis C (CHCV) does not have a satisfactory solution today. Unlike many infections, the source of hepatitis B virus (HBV), hepatitis C (HCV) and human immunodeficiency virus (HIV) is only an infected person, and in this case, the fight against the source of infection is completely excluded. Infection with viruses occurs parenterally, more often with medical manipulations. The only way to combat the spread of HBV, HCV and HIV infections is to interrupt the mechanisms and ways of their transmission. Infection of patients in medical institutions with HBV and HCV, and often HIV, becomes a serious problem, they account for from 3% to 11% of the total number of infected. Sufficiently high risk of infection with HBV, HCV and HIV is represented by medical and non-medical manipulations associated with a violation of the skin and mucous membranes, if they are not performed with properly disinfected reusable instruments. Infection is possible through the remnants of virus-containing infected blood particles on common instruments. Significant high percentage (from 3% to 11% of the total number of infected people) of human infection, especially HBV and HCV, is noted with the repeated use of medical instruments infected with viruses (surgical, dental, ophthalmological, laryngological, gynecological and others). Reliable way to neutralize medical instruments is to sterilize them under the influence of high temperature. However, a significant part of the instruments cannot be sterilized at high temperature. Under the influence of high temperature, tools lose basic properties such as hardness, elasticity, specularity and others. Complete removal of viral particles from the surface of medical instruments by mechanical means is not achievable. As a result, viral particles capable of replication (reproduction in the body) and infecting people remain on the instruments. To infect a person and develop a disease, it is enough to get even one particle of HBV or HCV into the blood. This causes a high risk of infection of patients with viral infections during medical manipulations. The mass use of disposable medical instruments for each patient can solve this problem, but this requires solving a number of economic and financial problems.
