The flu, or influenza, is a contagious respiratory illness caused by influenza viruses.
What causes it?
It is caused by influenza viruses that infect the nose, throat, and sometimes the lungs.
What are the symptoms?
Symptoms include fever, chills, cough, sore throat, runny or stuffy nose, muscle aches, fatigue, and sometimes vomiting and diarrhea.
Who is likely to suffer from it?
Children, the elderly, pregnant women, and individuals with weakened immune systems are more susceptible.
What are the potential complications, if left untreated?
Complications can include pneumonia, bronchitis, sinus infections, and worsening of chronic medical conditions.
How is it treated?
Treatments include rest, fluids, over-the-counter medications to relieve symptoms, and antiviral medications in severe cases. Annual flu vaccinations can help prevent the flu.
