Vaccination to prevent influenza is particularly important for people who are at increased risk for severe complications from influenza or at higher risk for influenza-related doctor or hospital visits. When vaccine supply is limited, vaccination efforts should focus on delivering vaccination to the following people since these populations have a higher risk for H1N1 and some other viral infections according to the CDC:
All children 6 months to 4 years (59 months) of age
All people 50 years of age and older
Adults and children who have chronic pulmonary (including asthma) or cardiovascular (except isolated hypertension), renal, hepatic, neurological, hematologic, or metabolic disorders (including diabetes mellitus)
People who have immunosuppression (including immunosuppression caused by medications or by HIV)
Women who are or will be pregnant during the influenza season
Children and adolescents (6 months to 18 years of age) who are receiving long-term aspirin therapy and who might be at risk for experiencing Reye’s syndrome after influenza virus infection
Residents of nursing homes and other long-term-care facilities
American Indians/Alaska natives
People who are morbidly obese (BMI ≥40)
Health-care professionals (doctors, nurses, health-care personnel treating patients)
Household contacts and caregivers of children under 5 years of age and adults 50 years of age and older, with particular emphasis on vaccinating contacts of children less than 6 months age
Household contacts and caregivers of people with medical conditions that put them at higher risk for severe complications from influenza
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