Immunogenicity of Inactivated Swine H1N1 Vaccine In HIV Infected Children - The Miami Cohort Study

Completed

Conditions studied: HIV

In brief

Immunosuppressed patients are at increased risk for complications of influenza infection, including secondary pneumonia and are recommended for annual influenza vaccination. Thus, the appearance of a novel subtype of influenza A virus designated as 2009 swine H1N1 virus has added an extra layer of complexity in the immunization regimen in this population. In general, susceptibility to swine H1N1 infection among young population is higher as young adults and children completely lack protective titers. According to the Center for Disease Control (CDC), 70 percent of people hospitalized with H1N1 have been "high risk" cases, including persons 65 years of age or older, or people with compromised immune systems as observed during HIV infection. This has prompted CDC to include HIV infected children to be one of the five groups to be vaccinated with the new H1N1 vaccine (National Center for Immunization). Currently no information exists about the nature of the immune response to the vaccine against H1N1 swine-origin influenza virus (S-OIV) in HIV infected children. It is unknown whether HIV impairs the immunogenicity of the vaccine predisposing this population to infection with S-OIV. Thus, a pilot proposal is being undertaken to study the mechanism of H1N1 vaccine protection in HIV infected children, by investigating the correlation of infection status with seroresponse, duration of response and development of influenza-like illness following vaccine. Additionally we will establish whether we can identify immune signatures by characteristic gene expression patterns correlating with the vaccine immunogenicity that can be predictive of efficacy for "good" and "suboptimal" vaccination regimen. Data generated will be used to initiate a comprehensive study on the immunogenicity of the influenza vaccines in HIV-infected children and youth, which is critically important to address the health care needs of this vulnerable population.

Key facts

Study ID

NCT02031874

Run by

University of Miami

People needed

33

Starts

2009-12-01

Expected to finish

2012-12-01

Last updated by the study team

2014-04-24

Who can join

Age: 1 and older, up to 25. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Individuals must have a positive ELISA with confirm with a western blot after 18 months of age or a positive DNA or RNA PCR

You may not qualify if…

• Patients with hypersensitivity to eggs or chicken protein, neomycin, or polymyxin, or life-threatening reaction to previous influenza vaccination will be excluded. Pregnant individuals will be excluded from the study at this time. Patients with a previous episode of Guillain-Barré Syndrome (GBS) in relation to a previous influenza vaccination, will also be excluded. Allergic reactions, including anaphylactic shock

Where it is running

• University of Miami — Miami, Florida, United States

Full record on ClinicalTrials.gov

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