PubMed Journals Articles About "Tuberculosis Vaccine Shows Efficacy Over Three Years Negative" RSS

02:20 EST 14th December 2019 | BioPortfolio

Tuberculosis Vaccine Shows Efficacy Over Three Years Negative PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Tuberculosis Vaccine Shows Efficacy Over Three Years Negative articles that have been published worldwide.

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Showing "tuberculosis vaccine shows efficacy over three years negative" PubMed Articles 1–25 of 29,000+

Final Analysis of a Trial of M72/AS01 Vaccine to Prevent Tuberculosis.

Results of an earlier analysis of a trial of the M72/AS01 candidate vaccine against showed that in infected adults, the vaccine provided 54.0% protection against active pulmonary tuberculosis disease, without evident safety concerns. We now report the results of the 3-year final analysis of efficacy, safety, and immunogenicity.

BCG vaccination and tuberculosis prevention: A forty years cohort study, Monastir, Tunisia.

We aimed to describe incidence, trends of tuberculosis (TB) over 18 years and to evaluate the impact of the BCG vaccine after four decades of immunization program according to three protocols. We performed a cohort study including declared cases in Monastir from January 1, 2000 to December 31, 2017. We reported 997 cases of TB. The predominant site was pulmonarylocalization (n = 486). The age standardized incidence of pulmonary and lymph node TB per 100,000 inh were 5.71 and 2.57 respectively. Trends were n...

Adjuvanted Recombinant Glycoprotein E Herpes Zoster Vaccine.

The adjuvanted recombinant glycoprotein E herpes zoster (HZ) vaccine is superior to the live attenuated HZ vaccine, with an efficacy >90% against HZ in healthy immunocompetent adults aged ≥50 years after vaccination. In pivotal studies, the efficacy of the new vaccine varied very little with the age of the vaccinee and decreased only by 5-10% in the 3.5 years after immunization. This nonlive vaccine was successfully administered to small cohorts of immunocompromised individuals; initial trials showed effi...

Phylogenomic and epidemiological insights into two clinical Mycobacterium bovis BCG strains circulating in South Africa.

Mycobacterium bovis BCG is a live, attenuated tuberculosis vaccine. While the vaccine protects infants from tuberculosis, complications including, disseminated infections have been reported following vaccination. Genetically diverse BCG sub-strains now exist following continuous passaging of the original Pasteur strain for vaccine manufacture. This genetic diversity reportedly influences the severity of disseminated BCG infections and the efficacy of BCG immunization.

CD4+ T cell cytokine responses to the DAR-901 booster vaccine in BCG-primed adults: A randomized, placebo-controlled trial.

DAR-901 is an inactivated whole cell tuberculosis booster vaccine, prepared using a new scalable, broth-grown method from the master cell bank of SRL172, a vaccine previously shown to prevent tuberculosis. This study examined whether DAR-901 (a) induces CD4+ T cell cytokine profiles previously proposed as correlates of protection and (b) has a specific vaccine-induced immunological signature compared to BCG or placebo.

New vaccines against tuberculosis.

With about 10 million active disease cases and 1.5 million deaths in 2018, tuberculosis (TB) remains one of the most threatening infectious diseases. Yet, the World Health Organization (WHO) aims to reduce morbidity and mortality by 90 and 95%, respectively, between 2015 and 2035. Although diagnostics, therapeutics, and a vaccine are available, it is beyond doubt that better intervention measures are needed to accomplish this ambitious goal. The vaccine bacille Calmette-Guérin (BCG) partially protects ...

Mucosal vaccination with a self-adjuvanted lipopeptide is immunogenic and protective against Mycobacterium tuberculosis.

Tuberculosis (TB) remains a staggering burden on global public health. Novel preventative tools are desperately needed to reach the targets of the WHO post-2015 End-TB Strategy. Peptide or protein-based subunit vaccines offer potential as safe and effective generators of protection, and enhancement of local pulmonary immunity may be achieved by mucosal delivery. We describe the synthesis of a novel subunit vaccine via native chemical ligation. Two immunogenic epitopes, ESAT61-20 and TB10.43-11 from Mycobact...

Alternate aerosol and systemic immunisation with a recombinant viral vector for tuberculosis, MVA85A: A phase I randomised controlled trial.

There is an urgent need for an effective tuberculosis (TB) vaccine. Heterologous prime-boost regimens induce potent cellular immunity. MVA85A is a candidate TB vaccine. This phase I clinical trial was designed to evaluate whether alternating aerosol and intradermal vaccination routes would boost cellular immunity to the Mycobacterium tuberculosis antigen 85A (Ag85A).

Beyond memory T cells: mechanisms of protective immunity to Tuberculosis infection.

Tuberculosis (TB) is a serious infectious disease caused by infection with Mycobacterium tuberculosis, and kills more people annually than any other single infectious agent. Although a vaccine is available, it is only moderately effective and an improved vaccine is urgently needed. The ability to develop a more effective vaccine has been thwarted by a lack of understanding of the mechanism of vaccine-induced immune protection. Over recent decades many novel TB vaccines have been developed and almost all hav...

Health economic evaluation of current vaccination strategies and new vaccines against tuberculosis: a systematic review.

: Bacillus Calmette-Guérin (BCG) is the only licensed vaccine for tuberculosis, but its effectiveness is limited and varies by age. New candidate vaccines are currently being investigated. In response to the declining incidence of TB, practices relating to BCG vaccination have changed in various countries in recent years. A valid cost-effectiveness study is therefore needed in order to assist decision-makers in the implementation of cost-effective strategies for BCG vaccination. : Studies involving economi...

Which patients should receive the herpes zoster vaccine?

The recombinant adjuvanted zoster vaccine (RZV, trade name Shingrix) is preferentially recommended by the Advisory Committee on Immunization Practices to prevent herpes zoster and related complications in immunocompetent adults age 50 years and older. This article reviews efficacy and safety of the vaccine, its use in special populations, and how to prevent administration errors to answer the question "Which patients should receive the herpes zoster vaccine?"

Influenza Vaccine Effectiveness in the Inpatient Setting; Evaluation of Potential Bias in the Test Negative Design by use of Alternate Control Groups.

The test negative design is validated in outpatient but not inpatient studies of influenza vaccine effectiveness. The prevalence of chronic pulmonary disease among inpatients may lead to nonrepresentative controls. Test negative design estimates are biased if vaccine administration is associated with incidence of non-influenza viruses. We evaluated whether control group selection and effects of vaccination on non-influenza viruses biased vaccine effectiveness in our study. Subjects were enrolled at the Univ...

Activity Of (-)-Camphene Derivatives Against Mycobacterium tuberculosis In Acidic pH.

For more than 60 years, the lack of new anti-tuberculosis drugs and the increase of resistant Mycobacterium tuberculosis lineages exhibit a therapeutic challenge, demanding new options for the treatment of resistant tuberculosis.

Comparison of vaccine effectiveness against influenza hospitalization of cell-based and egg-based influenza vaccines, 2017-2018.

Egg-based influenza vaccines could be less effective than cell-based vaccine due to adaptive mutations acquired for growth. We conducted a test-negative case-control study at Kaiser Permanente Southern California to assess vaccine effectiveness (VE) against hospitalization for laboratory-confirmed influenza during 2017-2018. Among the 1186 cases and 6946 controls, 74% and 59%, respectively, were ages ≥ 65 years. For any influenza, the adjusted relative VE of cell-based vaccine versus egg-based vacci...

Medical Conditions at Enrollment do not Impact Efficacy and Safety of the Adjuvanted Recombinant Zoster Vaccine: a Pooled Post-Hoc Analysis of two Parallel Randomized Trials.

In two pivotal efficacy studies (ZOE-50; ZOE-70), the adjuvanted recombinant zoster vaccine (RZV) demonstrated >90% efficacy against herpes zoster (HZ). Adults aged ≥50 or ≥70 years (ZOE-50 [NCT01165177]; ZOE-70 [NCT01165229]) were randomized to receive 2 doses of RZV or placebo 2 months apart. Vaccine efficacy and safety were evaluated post-hoc in the pooled (ZOE-50/70) population according to the number and type of selected medical conditions present at enrollment. At enrollment, 82.3% of RZV and 82.7...

Long-term efficacy of 6-month therapy with isoniazid and rifampin compared with isoniazid, rifampin, and pyrazinamide treatment for pleural tuberculosis.

Research into anti-tuberculosis treatment has mainly focused on pulmonary tuberculosis (TB), with few studies on pleural-TB. The aim of the study is to compare the long-term efficacy of a 6-month treatment regimen with isoniazid and rifampicin (6HR) with treatment regimen of isoniazid, rifampicin, and pyrazinamide (6HR2Z) for pleural-TB. A case-control study of 200 HIV-negative patients with pleural-TB prospectively followed in our TB-unit from 1995 to 2018. The primary resistance to isoniazid is

Ten years of experience with herpes zoster vaccine in primary care- how attitudes and practices have changed and what it may mean for a new zoster vaccine.

Zoster vaccine live (ZVL [Zostavax]) has been recommended for the prevention of herpes zoster (HZ) among immunocompetent adults ≥60 years in the United States since 2008. To examine changes in healthcare providers' perceptions and practices related to HZ disease and vaccination, we administered surveys to national networks of primary care physicians in 2005, 2008, and 2016. Ten years after ZVL was first licensed, physicians were more likely to respond that they perceived HZ as a serious disease and more...

Feasibility of case-control and test-negative designs to evaluate dengue vaccine effectiveness in Malaysia.

The world's first dengue vaccine [Dengvaxia; Sanofi Pasteur] was licensed in 2015 and others are in development. Real-world evaluations of dengue vaccines will therefore soon be needed. We assessed feasibility of case control (CC) and test-negative (TN) design studies for dengue vaccine effectiveness by measuring associations between socio-demographic risk factors, and hospitalized dengue outcomes, in Malaysia.

The use of test-negative controls to monitor vaccine effectiveness: a systematic review of methodology.

The test-negative design is an increasingly popular approach for estimating vaccine effectiveness (VE) due to its efficiency. This review aims to examine published test-negative design studies of VE and to explore similarities and differences in methodological choices for different diseases and vaccines.

Pulmonary tuberculosis in a male with sarcoidosis.

Tuberculosis and sarcoidosis are chronic systemic diseases that have similar pulmonary and extra-pulmonary manifestations. It is likely that infection with Mycobacterium tuberculosis (MTB) is a common pathophysiologic mechanism for tuberculosis and sarcoidosis. We present a case of a patient with a primary diagnosis of sarcoidosis. The patient did not receive any immunosuppressive treatment till that time. Subsequently, smear-negative pulmonary tuberculosis was discovered, confirmed with the positive cultur...

Chloroplast-based inducible expression of ESAT-6 antigen for development of a plant-based vaccine against tuberculosis.

Mycobacterium tuberculosis causes tuberculosis in humans. The major disease burden of tuberculosis lies in developing countries. Lack of an effective vaccine for adults is one of the major hurdles for controlling this deadly disease. In the present study, 6 kDa early secretory antigenic target (ESAT-6) of M. tuberculosis was inducibly expressed in chloroplasts of Nicotiana tabacum. The expression of ESAT-6 in chloroplasts was controlled by T7 promoter that was activated by nuclear-generated signal peptide...

Dengue vaccine development: status and future.

Dengue, the most common arbovirus, represents an increasingly significant cause of morbidity worldwide, including in travelers. After decades of research, the first dengue vaccine was licensed in 2015: CYD-TDV, a tetravalent live attenuated vaccine with a yellow fever vaccine backbone. Recent analyses have shown that vaccine performance is dependent on serostatus. In those who have had a previous dengue infection, i.e., who are seropositive, the efficacy is high and the vaccine is safe. However, in seron...

Assessment of population immunity to measles in Ontario, Canada: A Canadian Immunization Research Network (CIRN) Study.

Canada eliminated measles in 1998. We conducted a sero-epidemiology study to estimate population immunity to measles in the province of Ontario, Canada and to identify groups at higher risk of outbreaks. We used a previously developed modified enzyme immunoassay to test 1,199 residual sera from patients aged 1-39 years. We re-tested negative and equivocal sera using a plaque reduction neutralization assay. We interpreted our results in the context of Ontario's immunization program and vaccine coverage data....

Clinical Efficacy of Three Surgical Approaches for the Treatment of Cervicothoracic Tuberculosis: A Multicenter Retrospective Study.

To evaluate the efficacy of three surgical approaches for the treatment of cervicothoracic tuberculosis.

Do UK sheep farmers use orf vaccine correctly and could their vaccination strategy affect vaccine efficacy?

Orf, a parapoxvirus, is a zoonosis causing a contagious pustular dermatitis, and has a high morbidity in sheep worldwide. Despite a vaccine being available, orf prevalence in England is estimated to be 2 per cent in ewes and 20 per cent in lambs​​. There is concern that farmers are not complying with the vaccination guidelines and therefore the objective of this study was to investigate if orf vaccine is used correctly on sheep farms in the UK and to identify barriers and motivators of sheep farmers to ...

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