Influenza is commonly known as “flu”. It is highly contagious and can affect anyone, including healthy people. It could lead to severe complications like pneumonia, bronchitis, sinusitis, ear infection, meningitis (inflammation of the lining that covers the brain) or even death.
Flu can spread directly from person to person. When someone infected coughs, sneezes or speaks, the virus can be transmitted into the air via droplets. You may then breathe in the virus, which attacks your respiratory system and cause your mucous membrane to be inflamed.
Influenza vaccination is contraindicated for individuals who have had documented anaphylaxis to any ingredient in the vaccine except egg, or a previous dose of inactivated influenza vaccine. These individuals should not receive the vaccine.
Most people have no problems from the vaccine. You might have a mild fever and feel tired or achy afterward. Some people also have soreness, redness, or swelling where they got their shot. These problems aren’t serious and don’t last long.