Laboratory Study of Licensed H1N1 Influenza Vaccines in HIV-1 Perinatally Infected Children and Youth

HIV-infected children typically respond poorer to vaccines as compared to normal children. The FDA has currently approved several Influenza A 2009 monovalent vaccines to be used in children and adults. However, little data is available in perinatally infected youth. Therefore, knowledge of the immunogenicity of several of the licensed Influenza A 2009 monovalent vaccines in HIV-infected children and youth is critically important to address the health care needs of this vulnerable population. Efforts are currently underway to evaluate Influenza A 2009 monovalent vaccines in healthy children as well as other populations. This study will assess the immune response following receipt of three Influenza A monovalent vaccines in HIV-1 infected children and youth. Protection of HIV-1 infected children and youth from 2009 H1N1 Influenza A will require knowledge of immunogenicity of these new products in this population. The 2009 (H1N1) Influenza A virus is likely to infect a significant proportion of HIV-1 infected children and youth. Immunogenicity of licensed and commercially available Influenza A 2009 monovalent vaccines must be established in HIV-1 infected children in order to assure that this population is protected. Lack of a protective immune response would support the need for additional measures to protect this high risk population.