Do Viruses Evolve To Be Less Lethal?

Do Viruses Evolve To Be Less Lethal? There are historic examples of viruses which gradually became less dangerous over time, such as the H1N1 influenza viruses responsible for the 1918 “Spanish flu” and 2009 “swine flu” pandemics, and the myxoma virus that causes myxomatosis in rabbits. What role do viruses play in evolution? Viruses hijack