Track topics on Twitter Track topics that are important to you
The purpose of this research study is to study the safety and effectiveness of vaccinating individuals who have previously received an avian influenza vaccine derived from one type of H5N1 virus with a vaccine derived from a different type of avian influenza virus. A second reason for this study is to compare responses in people who have received two different but similar types of H5N1 vaccine to the responses in subjects who receive 2 doses of only the H5N1 vaccine used in this study. The information obtained may provide important information into the usefulness of a pre-pandemic vaccination. Participants will include 600 healthy adult volunteers, ages 19 and older, in the United States. Study procedures include: physical exams, vaccination with either a low dose (15 micrograms) or high dose (90 micrograms) of vaccine, blood samples, and maintaining a memory aid to record oral temperatures and side effects. Study participation will be approximately 7 months.
The goals of this study are to investigate the safety, reactogenicity, and immunogenicity of a single dose of monovalent subvirion influenza vaccine produced from a clade 2 A/H5N1 vaccine administered by intramuscular injection to healthy adults and the elderly who have previously received at least 2 doses of clade 1 A/H5N1 vaccine. In addition, this study will compare these results to individuals who are receiving 2 doses of the clade 2 A/H5N1 vaccine for the first time. The primary objective of the study is to compare the immune response following a single low-dose (15 mcg) to a single high-dose (90 mcg) of influenza vaccine derived from the clade 2 virus A/H5N1/Indonesia/05/05 in individuals who have previously received at least 2 doses of an influenza vaccine derived from the clade 1 virus A/H5N1/Vietnam/1203/2004 (A/VN/1203/04). The secondary objectives will: compare the immune response following a single low-dose (15 mcg) or single high-dose (90 mcg) of influenza vaccine derived from the clade 2 virus A/H5N1/Indonesia/05/05 in individuals who have previously received at least 2 doses of an influenza vaccine derived from the clade 1 virus A/H5N1/Vietnam/1203/2004 (A/VN/1203/04) to a group that has not received any previous A/H5N1 vaccine but who will receive 2 doses of an influenza vaccine derived from the clade 2 virus A/H5N1/Indonesia/05/05; evaluate the factors associated with immunologic response to a single dose of a vaccine derived from a clade 2 virus among individuals who have previously received at least 2 doses of vaccine derived from a clade 1 virus; evaluate the safety of a single dose of subvirion inactivated vaccine derived from the clade 2 virus A/H5N1/Indonesia/05/05 in individuals who have previously received at least 2 doses of an influenza vaccine derived from the clade 1 virus A/H5N1/Vietnam/1203/2004 (A/VN/1203/04); explore immunologic responses following vaccination with a clade 2 vaccine from A/H5N1/Indonesia/05/05 to influenza strains other than A/H5N1/Indonesia/05/05, including A/VN/1203/04; evaluate the immune responses of previously unvaccinated individuals after 1 or 2 doses of clade 2 virus A/H5N1/Indonesia/05/05 vaccine; and evaluate the duration of antibody responses following 1 or 2 doses of vaccine derived from the clade 2 virus A/H5N1/Indonesia/05/05. This study will recruit 600 healthy volunteers aged 19 years or older, in the United States, who have previously participated in a linked DMID-sponsored study. This study is linked to DMID protocols 04-063, 05-0090, 04-076, 05-0015, 05-0127, 05-0141, 06-0089, 04-062, 06-0052, and 08-0030. The study will be conducted at up to 7 vaccine centers. Subjects who previously received at least 2 doses of the clade 1 vaccine derived from the A/H5N1/Vietnam/1203/2004 virus will be randomized to receive a single dose of either 15 mcg or 90 mcg of a clade 2 vaccine derived from the A/H5N1/Indonesia/05/05 virus in a 1:1 ratio. H5 naïve subjects who previously received at least 2 doses of a placebo will be randomized to receive 2 doses of either the 15 mcg or 90 mcg of a clade 2 vaccine derived from the A/H5N1/Indonesia/05/05 virus in a 1:1 ratio. Volunteers will be observed in the clinic for 15 minutes after inoculation, and will maintain a memory aid to record oral temperature and systemic and local adverse events (AEs) for 8 days following each vaccination. Volunteers will be contacted by telephone 1 to 3 days after each vaccination to assess for the occurrence of AEs, and they will return to the clinic 8-10 days after each vaccination for AE and concomitant medication assessment, a targeted physical examination (if indicated), and review of the memory aid. T
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Prevention
Influenza A/H5N1/Indonesia/05/05 (clade 2) inactivated vaccine
Stanford University - Stanford Hospital and Clinics - Pediatrics - Infectious Diseases
National Institute of Allergy and Infectious Diseases (NIAID)
Published on BioPortfolio: 2014-11-19T05:37:07-0500
The purpose of the study is to evaluate safety and compare how the body reacts to 2 different strengths of the Clade (specific type of H5N1 virus) 2 H5N1 flu vaccine when given as a single...
Following the licensure of sanofi pasteur's 90 µg rgA/Vietnam/1203/2004 pandemic influenza vaccine, efforts to develop a lower antigen dose formulation with improved immunogenicity using ...
The purpose of this study is to test different adjuvanted vaccine formulations as a two-dose schedule in immunologically naïve adults against one vaccine formulation without adjuvant in t...
Severe disease in humans due to bird influenza viruses (H5N1) has led to concern that this virus may result in a widespread outbreak of bird flu. The purpose of this study is to evaluate t...
A single center, randomized and double-blind phase II clinical trial is to be conducted in adults to evaluate the safety and immunogenicity of an inactivated pandemic influenza vaccine (wh...
Efficacy of Bivalent Inactivated Vaccine Containing Insect Cell-Expressed Avian Influenza H5 and Egg-Based Newcastle Disease Virus (NDV) Against Dual Infection with Highly Pathogenic H5N1 and Velogenic NDV in Chickens.
The genetic evolution of highly pathogenic avian influenza (HPAI) in Egypt has developed a new clade H5N1 (126.96.36.199) since 2014. Meanwhile, the new avian influenza virus (AIV) clade mutually with the v...
In July 2016, an avian influenza outbreak in duck farms in Yogyakarta province was reported to Disease Investigation Center (DIC) Wates, Indonesia with approximately 1,000 ducks death or culled. In th...
Increased illness due to antigenically drifted A(H3N2) clade 3C.3a influenza viruses prompted concerns about vaccine effectiveness and vaccine strain selection. We used U.S. virologic surveillance and...
Influenza is a severe disease burden among all age groups. This study aimed to review the efficacy of inactivated influenza vaccines with MF59 adjuvant and non-adjuvanted inactivated influenza vaccine...
Safety and immunogenicity of investigational seasonal influenza hemagglutinin DNA vaccine followed by trivalent inactivated vaccine administered intradermally or intramuscularly in healthy adults: An open-label randomized phase 1 clinical trial.
Seasonal influenza results in significant morbidity and mortality worldwide, but the currently licensed inactivated vaccines generally have low vaccine efficacies and could be improved. In this phase ...
A subtype of INFLUENZA A VIRUS comprised of the surface proteins hemagglutinin 5 and neuraminidase 1. The H5N1 subtype, frequently referred to as the bird flu virus, is endemic in wild birds and very contagious among both domestic (POULTRY) and wild birds. It does not usually infect humans, but some cases have been reported.
Species of the genus INFLUENZAVIRUS B that cause HUMAN INFLUENZA and other diseases primarily in humans. Antigenic variation is less extensive than in type A viruses (INFLUENZA A VIRUS) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with INFLUENZA A VIRUS and there have been no pandemics. Previously only found in humans, Influenza B virus has been isolated from seals which may constitute the animal reservoir from which humans are exposed.
Membrane glycoproteins from influenza viruses which are involved in hemagglutination, virus attachment, and envelope fusion. Fourteen distinct subtypes of HA glycoproteins and nine of NA glycoproteins have been identified from INFLUENZA A VIRUS; no subtypes have been identified for Influenza B or Influenza C viruses.
Infection of domestic and wild fowl and other BIRDS with INFLUENZA A VIRUS. Avian influenza usually does not sicken birds, but can be highly pathogenic and fatal in domestic POULTRY.
Vaccines used to prevent infection by viruses in the family ORTHOMYXOVIRIDAE. It includes both killed or attenuated vaccines. The composition of the vaccines is changed each year in response to antigenic shifts and changes in prevalence of influenza virus strains. The vaccine is usually bivalent or trivalent, containing one or two INFLUENZAVIRUS A strains and one INFLUENZAVIRUS B strain.
Influenza or 'flu' is a respiratory illness associated with infection by influenza virus. Symptoms frequently include headache, fever, cough, sore throat, aching muscles and joints. There is a wide spectrum of severity of illness ranging from min...
A vaccine is any preparation intended to produce immunity to a disease by stimulating the production of antibodies. It creates immunity but does not cause the disease. There are several differnt types of vaccine avalable; Killed microorganisms; which s...
A vaccine is a biological preparation that improves immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism, and is often made from weakened or killed forms of the microbe, its toxins or one ...