Infectious diseases and problems of biosafety

Infectious diseases have always been and still are the most dangerous ones for world population. Recently, on the background of dramatic drop in bacterial infection the proportion of viral diseases has increased. There exists a number of extremely hazardous viruses, which are considered to be a very effective biological weapon. Viral infections are usually highly contagious and can cause epidemics and pandemics. Emergence of 2-4 new causative agents is registered every year. Nanobacteria also contribute to the emergence of new causative agents; moreover, their influence on vascular malformations has already been proved. Vaccines are the most effective tool we have to prevent infectious diseases. Unfortunately, due to antivaccine propaganda the number of immunocompetent population decreased. It led to the development of immunopathological states and, consequently, to increase of lingering forms of diseases, frequent occurrence of mixed infections, superinfection, etc. There are up to 10-15 extremely hazardous viruses in the world, which pose an immediate risk of death. Several classes of genes are considered to be lethal after being incorporated into the host cell. These genes activate the synthesis of proteinaceous substances in the cells, which destroy protective and regulatory systems of the body. When used in bioterrorism together with genetic constructs identical to fragments of the human genome, it is next to impossible to prove the external causes. Bioterrorism is an extremely serious threat to the security of all countries. It may cause much harm to human health and undermine economic performance. Moreover, infectious diseases greatly affect health indicators, life expectancy, and mortality.