Flu (Influenza)

• The flu spreads easily from person to person
• Symptoms often appear suddenly
• Seasonal flu is most common in fall and winter
• Annual vaccination is the best prevention
• Older adults, young children, and people with chronic conditions are at higher risk

Flu symptoms typically come on quickly and may include:

• Fever or chills
• Cough and sore throat
• Runny or stuffy nose
• Muscle or body aches
• Fatigue or weakness
• Headache
• Nausea, vomiting, or diarrhea (more common in children)

The flu is caused by influenza viruses that infect the nose, throat, and lungs. The virus spreads through:

• Respiratory droplets from coughing, sneezing, or talking
• Close contact with an infected person
• Touching contaminated surfaces and then touching the mouth, nose, or eyes

People at increased risk for flu complications include:

• Adults age 65 and older
• Young children
• Pregnant individuals
• People with chronic medical conditions
• Individuals with weakened immune systems

Most people recover from the flu with rest and supportive care, but treatment options may include:

• Rest and increased fluid intake
• Fever-reducing or pain-relieving medications
• Antiviral medications for certain individuals, especially when started early
• Monitoring for complications in high-risk patients

See a doctor if flu symptoms are severe, worsen, or do not improve after a few days, or if you are at high risk for complications. Seek urgent care for difficulty breathing, chest pain, confusion, or persistent high fever.