Viruses are dangerous organisms that are spread everywhere around us. It is surprising that such a finite organism can cause a lot of diseases. One of the strange characteristics of the virus is that it does not reproduce only within the body of living organisms, Or even the plant, and most infectious diseases caused by viruses, and these diseases range in seriousness, some of which can be cured, which may be very serious and lead to death, and we will know today some of the diseases caused by viruses in the bodies of organisms.
The virus attaches to the cell (called the host cell) through special receptors located on the cell and the virus, enters it and releases its DNA inside or inside its nucleus. The DNA of the virus is the genetic material that contains the information needed to clone itself. Host cells are forced to clone the virus, and usually the infected cell dies because the virus prevents it from performing its normal functions. When it dies, new viruses are released, which continue to infect other cells.