A Study to Evaluate the Safety of HIN1 Monovalent Vaccine (MEDI3414) in Children 2 to 17 Years of Age

Inclusion Criteria

• Male or female, 2 to 17 years of age (not yet reached their 18th birthday) at the time of randomization
• Healthy by medical history and physical exam
• Written informed consent and any locally required authorization (eg, Health Insurance Portability and Accountability Act [HIPAA] in the United States of America [USA], European Union [EU] Data Privacy Directive in the EU and written informed assent) obtained from the subject/legal representative prior to performing any protocol-related procedures, including screening evaluations
• Females of child-bearing potential, (ie, unless premenarchal, surgically sterile [eg, bilateral tubal ligation, bilateral oophorectomy, or hysterectomy], has sterile male partner, or practices abstinence) must use an effective method of avoiding pregnancy (including oral, transdermal, or implanted contraceptives, intrauterine device, female condom with spermicide, diaphragm with spermicide, cervical cap, or use of a condom with spermicide by the sexual partner) for 30 days prior to the first dose of investigational product, and must agree to continue using such precautions for 60 days after the second dose of investigational product. In addition, the subject must also have a negative urine or blood pregnancy test at screening and, if screening and Day 1 do not occur on the same day, on the day of vaccination prior to randomization. Investigator judgment is required to assess the childbearing potential of a pre-adolescent or adolescent girl.
• Males, unless not sexually active, must use an effective method of birth control with a female partner and must agree to continue using such contraceptive precautions for at least 30 days after the second dose of investigational product (from Day 1 through Day 59 of the study)
• Subject's legal representative available by telephone
• Subject/subject's legal representative is able to understand and comply with the requirements of the protocol, as judged by the investigator
• Ability to complete follow-up period of 180 days after Dose 2 as required by the protocol

Exclusion Criteria

• History of hypersensitivity to any component of the investigational product including egg or egg protein, gelatin or arginine, or serious, life-threatening, or severe reactions to previous influenza vaccinations
• History of hypersensitivity to gentamicin
• Any condition for which the inactivated influenza vaccine is indicated, including chronic disorders of the pulmonary or cardiovascular systems (eg, asthma), chronic metabolic diseases (eg, diabetes mellitus), renal dysfunction, or hemoglobinopathies that required regular medical follow-up or hospitalization during the preceding year
• Acute febrile (> 100.0°F oral or equivalent) and/or clinically significant respiratory illness (eg, cough or sore throat) within 14 days prior to randomization
• History of asthma, or in children < 5 years of age, history of recurrent wheezing
• Any known immunosuppressive condition or immune deficiency disease, including human immunodeficiency virus infection, or ongoing immunosuppressive therapy
• History of Guillain-Barré syndrome
• A household contact who is severely immunocompromised (eg, hematopoietic stem cell transplant recipient, during those periods in which the immunocompromised individual requires care in a protective environment); subject should additionally avoid close contact with severely immunocompromised individuals for at least 21 days after receipt of investigational product
• Receipt of any investigational agent within 30 days prior to randomization, or expected receipt through 30 days after the second dose of investigational product (use of licensed agents for indications not listed in the package insert is permitted)
• Use of aspirin or salicylate-containing products within 30 days prior to randomization or expected receipt through 30 days after final vaccination
• Expected receipt of antipyretic or analgesic medication (non-salicylate-containing) on a