A significant number of sick people also reported diarrhea and vomiting.  
At present it is thought that those at higher risk of serious complications from flu include:

• people age 65 years and older,
• children younger than 5 years old,
• pregnant women,
• people of any age with chronic medical conditions (such as asthma, diabetes, or heart disease),
• people whose immune systems are not strong (such as chemotherapy patients or those infected with HIV).

• Back to Flu Symptoms and Care
  
• How To Stay Healthy
  
• Children: When To Get Medical Help
  
• Adults: 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