cold vs flu symptoms

The flu, officially known as influenza, is a common respiratory infection caused by the influenza virus. This virus can affect individuals of all ages, but children are particularly susceptible due to their developing immune systems and frequent interaction with peers in close quarters, such as schools and playgrounds. The flu virus primarily spreads through respiratory droplets, which can be transmitted when an infected person coughs or sneezes. Additionally, contact with contaminated surfaces followed by touching the face can lead to infection.