Virus apparently can also be beneficial for human life,in general,viruses can harm and danger for humans, because virus causes several human diseases such as influenza are caused by orthomyxovirus, measles is caused by a paramyxovirus, polio is caused by poliovirus, mumps in caused by a paramyxovirus, acquired immune deficiency syndrom or AIDS which is caused by the human immunodeficiency virus or HIV, and other disease that caused by virus,but by knowing and recognizing the properties and structure of the body of virus, we can take the advantage of the virus for the benefit for mankind.
Medical technology has been used bacteriophages to recognize and identify bacterial pathogens, bacterial resistance and susceptibility to attack by bacteriophages can be used to determine the bacterial strains in the classification system, to determine the bacterial strain can be done by looking at the type of lysis after phages infection in particular, the call with phage typing, determination process is routinely used to identify the bacterial pathogens, such as staphylococcus and typhoid bacillus, so phage is tool for diagnosing a disease, and to follow the spread of the disease in the community, the lysogenic bacteria is a conceptual model to examine the oncogenic virus or cancer- causing viruses, since viruses that also have the ability to perpetuate the genetic material in infected cells.
Viruses also play a role in the manufacture of vaccines,vaccines are pathogenic microorganism that have been weakened or turned of, then the input into the animal or human body, in order to produce antibodies or immune system to fight the virus attackes inside the body, there are two ways to make vaccine,which is the conventional way or traditional way and also genetic engineering,the example of vaccine is produced by virus is rabies vaccine, and also can be used as biopepticides, for example baculovirus is sprayed on crops.
