Annual vaccination against influenza is recommended for

• all persons, including school-aged children, who want to reduce the risk of becoming ill with influenza or of transmitting influenza to others
• all children aged 6-59 months (ie., 6 months-4 years);
• all persons aged ≥ 50 years;
• children and adolescents (aged 6 months - 18 years) receiving long-term aspirin therapy who therefore might be at risk for experiencing Reye syndrome after influenza virus infection;
• women who will be pregnant during the influenza season;
• adults and children who have chronic pulmonary (including asthma), cardiovascular (except hypertension), renal , hepatic, hematological or metabolic disorders (including diabetes mellitus);
• adults and children who have immunosuppression (including immunosuppression caused by medications or by human immunodeficiency virus;
• adults and children who have any condition (e.g., cognitive dysfunction, spinal cord injuries, seizure disorders, or other neuromuscular disorders) that can compromise respiratory function or the handling of respiratory secretions or that can increase the risk for aspiration;
• residents of nursing homes and other chronic-care facilities;
• health-care personnel;
• healthy household contacts (including children) and caregivers of children aged < 5 years and adults aged ≥ 50 years, with particular emphasis on vaccinating contacts of children aged < 6 months; and
• healthy household contacts (including children) and caregivers of persons with medical conditions that put them at higher risk for severe complications from influenza.