Influenza which can also be referred to as the flu, is an infectious disease caused by RNA viruses of the flue chain. Since avian influenza virus A, also known as (H5N1) produces human infections with high morbidity and mortality rates, the probability of human-to-human transmission and its consequences attract a great deal of attention. Influenza Type A is the most severe flu, and an average of 40,000 people die each year from this virus. As the seasons go bye, there is an epidemic out break of Influenza every year. Effects of Influenza result in serious sickness, and death. Influenza viruses change over time according to mutations. A person that is infected with influenza virus type A, develops antibody against the virus and as the virus changes, the old antibody no longer recognizes the new virus. Other types of Influenza B and C have similar symptoms, but that of type A is the worse. The H1N1 virus can be distributed from Influenza in the late stages.