This is due to the fact that viruses have a very simple structure. Most viruses only have DNA and a protein coat that protects genetic information. For a long time, they can stay in a state of sleep in the environment, fluids, and the like. But as soon as they enter the body, they begin to show signs of life, as they receive all the necessary conditions for life. They multiply and destroy the cells of the host’s body. Some viruses are easily destroyed by leukocytes, and some are stronger for the host’s immunity.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.