|drug3695||Stamaril (live attenuated yellow fever vaccine) Wiki||0.71|
There are 2 clinical trials
Since the 1st pandemic of the 21st century caused by SARS coronavirus, the world has experienced outbreaks of swine origin H1N1 influenza, Ebola and Zika viruses, which have all resulted in global health crises. Rapid mass vaccination with an effective vaccine such as a live attenuated vaccine, of vulnerable immune-naïve populations to establish herd immunity is an approach to control outbreaks. Such live attenuated vaccine had been used with great success in sporadic yellow fever outbreaks and recently successfully employed in Ebola field trial, both of these diseases have the potential for pandemic spread. Indeed, live attenuated vaccines have proven especially effective in controlling childhood diseases and have even succeeded in eradicating polio and measles from most parts of the world. However, deployment of such vaccines for pandemic control cannot be limited to children but must include adults in order to rapidly elevate herd immunity rates to halt transmission. Vaccinating adults may produce efficacy rates significantly different to those observed in children due to the prevalence of chronic diseases and their associated metabolic complications. Presently, there are 1 billion people who are overweight, many suffer from concurrent metabolic disorders. As activation of the adaptive immunity is reliant on a robust innate immune response to vaccines, metabolic disorders and long-term anti-inflammatory therapy with interventions such as statins may reduce vaccine immunogenicity resulting in suboptimal efficacy in this subpopulation. This study would therefore test the hypothesis that statins reduce live attenuated vaccine immunogenicity. We will combine a clinical trial with systems vaccinology approaches to define the impact statins has on the innate immune, B and T-cell responses to live attenuated vaccination. Our study will thus extend upon another recently completed trial by us and will provide new insights into the determinants of vaccine efficacy in a rapidly growing and aging population globally
Description: the difference in neutralizing antibody titer to YF17D at Day 28, as measured by plaque reduction neutralization test (PRNT)Measure: the adaptive immune response to YF vaccination in (A): Adult human volunteers who are on long term statins therapy and (B): Adult human volunteers (controls) Time: 28 days
Description: viremia levels response in adult human volunteers on long term statins therapy compared to controls post-YF vaccinationMeasure: the difference in innate immune response to YF vaccination in adult human volunteers on long term statins therapy compared to controls post-YF vaccination Time: 28 days
Description: To examine the Cd4+ and Cd8+ T cell response in adult human volunteers on long term statins therapy compared to controls post-YF vaccinationMeasure: the cellular immune response of adult human volunteers on long term statins therapy with controls following YF vaccination. Time: 28 days
This is a placebo-controlled, randomized, double-blind study to evaluate the pharmacokinetics, safety and antiviral activity of galidesivir in subjects with yellow fever (YF) or COVID-19.
Data processed on September 26, 2020.
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