Common symptoms include a high fever (101ºF-102ºF) that begins suddenly, muscle/body aches, chills, tiredness, and sudden onset. Influenza frequently causes people to miss school and work but in some cases there are severe complications such as pneumonia

ommon symptoms include a high fever (101ºF-102ºF) that begins suddenly, muscle/body aches, chills, tiredness, and sudden onset. Influenza frequently causes people to miss school and work but in some cases there are severe complications such as pneumonia.

People at higher risk of developing flu complications include: Young children under 5, and especially those under 2 years Adults older than 65 Residents of nursing homes and other long-term care facilities Pregnant women People with weakened immune systems People who have chronic illnesses, such as asthma, heart disease, kidney disease and diabetes People who are very obese, with a body mass index (BMI) of 40 or higher