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Influenza pandemics can spread quickly and cost millions of lives; the 2009 H1N1 pandemic highlighted the shortfall in the current vaccine strategy and the need for an improved global response in terms of shortening the time required to manufacture the vaccine and increasing production capacity. Here we describe the pre-clinical assessment of a novel 2009 H1N1 pandemic influenza vaccine based o...
Akabane and bovine ephemeral fever (BEF) viruses cause vector-borne diseases. In this study, inactivated Akabane virus (AKAV)+Bovine ephemeral fever virus (BEFV) vaccines with or without recombinant vibrio flagellin (revibFlaB) protein were expressed in a baculovirus expression system to measure their safety and immunogenicity. Blood was collected from mice, guinea pigs, sows, and cattle that h...
Background Immunosuppressive medication reduces the immunogenicity of coronavirus disease 2019 (COVID-19) vaccines in patients with rheumatic and musculoskeletal diseases (RMDs). However, underlying mechanism remains unclear. The primary aim our study was to dissect impact immunosuppressive on cellular humoral immune responses RMD receiving inactivated COVID-19 vaccine. Methods A total 28 five ...
The utility of recombinant adenovirus serotype 5 (rAd5) vector-based vaccines for HIV-1 and other pathogens will likely be limited by the high prevalence of pre-existing Ad5-specific neutralizing Abs (NAbs) in human populations. However, the immunodominant targets of Ad5-specific NAbs in humans remain poorly characterized. In this study, we assess the titers and primary determinants of Ad5-spec...
Hepatitis B is responsible for the development of half of hepatocellular carcinoma cases and is a major cause of hepatic insufficiency. The vaccine against hepatitis B virus does not exhibit the same high efficacy in patients on hemodialysis as it does in immunocompetent individuals. The medical literature recommends vaccination with four doses (40 mg each) of the hepatitis B virus vaccine befo...
CONTEXT In the ongoing influenza pandemic, a safe and effective vaccine against 2009 influenza A(H1N1) is needed for infants and children. OBJECTIVE To assess the immunogenicity and safety of a 2009 influenza A(H1N1) vaccine in children. DESIGN, SETTING, AND PARTICIPANTS Randomized, observer-blind, age-stratified, parallel group study assessing 2 doses of an inactivated, split-virus 2009 in...
INTRODUCTION The efficacy of non-adjuvanted seasonal influenza vaccine in young children is considered to be suboptimal. This study compared the safety and immunogenicity profiles of MF59-adjuvanted, trivalent, influenza vaccine (ATIV) and non-adjuvanted, trivalent, influenza vaccine (TIV) in Guatemalan children (N = 360) between 6 and < 60 months of age. METHODOLOGY Children received two dos...
Laboratory staff who work with meningococcal isolates are at increased risk for developing invasive disease relative to the general population. This was the first study of laboratory workers who received both a conjugate vaccine against meningococcal serogroups A, C, W-135, and Y (Men ACWY-CRM, Menveo) and an investigational multicomponent vaccine against serogroup B containing factor H binding...
The present extension study, conducted in children originally vaccinated at 12-14 mo or 3-5 y of age, assessed antibody persistence and immune memory induced by an investigational tetravalent meningococcal serogroups A, C, W-135 and Y tetanus toxoid conjugate vaccine (MenACWY-TT). In the original study, participants were randomized to receive one dose of MenACWY-TT or licensed age-appropriate m...
BACKGROUND To understand immunological responses in chimpanzees vaccinated with live-attenuated vaccine (oral polio vaccine; OPV), serum neutralizing antibodies against poliovirus types 1, 2, and 3 were investigated over time. METHODS The neutralizing antibody titers against poliovirus types 1, 2, and 3 were determined by microneutralization test using 100 ID(50) of poliovirus types 1, 2, and...
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