Who is most vulnerable to severe illness?
According to the CDC, currently insufficient data are available to determine who is at higher risk for complications of novel influenza A (H1N1) virus infection. Thus, at this time, the same age and risk groups who are at higher risk for seasonal influenza complications should also be considered at higher risk for swine-origin influenza complications. Groups at higher risk for seasonal influenza complications include: Children younger than 5 years old. The risk for severe complications from seasonal influenza is highest among children younger than 2 years old. Adults 65 years of age and older. Persons with the following conditions: Chronic pulmonary (including asthma), cardiovascular (except hypertension), renal, hepatic, hematological (including sickle cell disease), neurologic, neuromuscular, or metabolic disorders (including diabetes mellitus); Immunosuppression, including that caused by medications or by HIV; Pregnant women; Persons younger than 19 years of age who are receiving lo
