How does the influenza virus spread?
The flu virus can be spread from and infected person by coughing and sneezing and the symptoms of the flu virus may not surface for 24 hours after one has contracted the infection. The flu season usually begins to peak in November through April. The flu virus can only live within a living cell of a human or animal. A virus has genetic material (DNA or RNA), allowing it to make copies of itself once it is in a living cell. They are very small and fit easily into human cells. Besides the genetic material other parts of a virus are the capsid and the protein coating. The capsid is the outermost shell of a virus and the protein coating contains the genetic material. The flu virus contains RNA and is able to reproduce within living cells. How many types of flu are there, that affect humans? The types of flu virus that attack humans are type A, B, and C. Type A of the flu virus can attack both humans and animals like swine, birds, horses, and aquatic mammals. Being immune to one strain of fl
