influenza (flu)
influenza, commonly known as the flu, is a viral infection that attacks the respiratory system — the nose, throat, and lungs. it is a highly contagious illness that is different from the common cold and can lead to severe health complications, particularly in high-risk groups.
symptoms of the flu can include fever, chills, muscle aches, cough, congestion, runny nose, headaches, and fatigue. some people, especially children, may also experience vomiting and diarrhea.
the flu is typically spread through respiratory droplets when people with the flu cough, sneeze, or talk. it can also be contracted by touching a surface or object that has the flu virus on it and then touching the mouth, nose, or eyes.
diagnosis may be confirmed with a laboratory test called a rapid influenza diagnostic test (ridt).
treatment includes rest, fluids, and over-the-counter medications to relieve symptoms. antiviral drugs may be prescribed in some cases to reduce the severity and duration of the illness.
annual flu vaccination is the best way to prevent the flu and its potentially serious complications.
