For adults, emergency warning signs that need urgent medical attention include:

• Difficulty breathing or shortness of breath
• Pain or pressure in the chest or abdomen
• Sudden dizziness
• Confusion
• Severe or persistent vomiting
• Flu-like symptoms improve but then return with fever and worse cough

• Back to Flu Symptoms and Care
  
• What Are The Symptoms
  
• How To Stay Healthy
  
• Children: When To Get Medical Help
  
• If You Are Sick, Stay Home From School And Work
• How to Care for a Sick Person at Home
  

• If You Are the Caregiver
• Household Cleaning, Laundry, and Waste Disposal
• Protect Other Persons in the Home
  
• Placement of the Sick Person