Influenza vaccine is also called as the flu shot. It is used to protect against the infection of the influenza virus. An influenza vaccine has a mixture of 3 viruses type which includes influenza type B virus strain, influenza type A having the H3N2 virus strain, and influenza type A having the H1N1 virus strain. Influenza is a respiratory illness that is contagious which may lead to mild or severe disease. It ... Read more
