What is H1N1 influenza virus vaccine nasal?

What is H1N1 influenza virus vaccine ()? H1N1 influenza is sometimes called "swine flu" because it is usually found in pigs. You cannot become infected with H1N1 influenza from eating pork products.H1N1 influenza virus can spread from one person to another through small droplets of saliva that are expelled into the air when an infected person coughs or sneezes. The virus can also be passed through contact with objects the infected person has touched, such as a door handle or other surfaces.H1N1 influenza virus vaccine is used to prevent infection caused by the pandemic 2009 H1N1 influenza virus.The nasal H1N1 influenza virus vaccine is a "live virus" vaccine. H1N1 influenza virus vaccine is also available in an injectable form, which is a "killed virus" vaccine.H1N1 influenza virus vaccine works by exposing you to a small dose of the virus, which helps your body to develop immunity to the disease. This vaccine will not treat an active infection that has already developed in the body.H1N1 influenza virus nasal vaccine is for use in people between the ages of 2 years and 49 years.Becoming infected with influenza is much more dangerous to your health than receiving the vaccine to protect against it. Most people with H1N1 influenza have recovered, but the virus has caused some deaths. Like any medicine, this vaccine can cause side effects, but the risk of serious side effects is extremely low.Like any vaccine, H1N1 influenza virus vaccine may not provide protection from disease in every person. This vaccine will not prevent illness caused by avian flu ("bird flu").