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Phase 2b Controlled Trial of M72/AS01E Vaccine to Prevent Tuberculosis

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TLDR
M72/AS01E provided 54.0% protection for M. tuberculosis–infected adults against active pulmonary tuberculosis disease, without evident safety concerns, in a phase 2b trial in Kenya, South Africa, and Zambia.
Abstract
Background A vaccine to interrupt the transmission of tuberculosis is needed. Methods We conducted a randomized, double-blind, placebo-controlled, phase 2b trial of the M72/AS01E tuberculosis vaccine in Kenya, South Africa, and Zambia. Human immunodeficiency virus (HIV)–negative adults 18 to 50 years of age with latent M. tuberculosis infection (by interferon-γ release assay) were randomly assigned (in a 1:1 ratio) to receive two doses of either M72/AS01E or placebo intramuscularly 1 month apart. Most participants had previously received the bacille Calmette–Guerin vaccine. We assessed the safety of M72/AS01E and its efficacy against progression to bacteriologically confirmed active pulmonary tuberculosis disease. Clinical suspicion of tuberculosis was confirmed with sputum by means of a polymerase-chain-reaction test, mycobacterial culture, or both. Results We report the primary analysis (conducted after a mean of 2.3 years of follow-up) of the ongoing trial. A total of 1786 participants receive...

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Citations
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Building a tuberculosis-free world: The Lancet Commission on tuberculosis

Michael J. A. Reid, +83 more
- 30 Mar 2019 - 
TL;DR: The Commission recommends five priority investments to achieve a tuberculosis-free world within a generation, which answer the question of how countries with high-burden tuberculosis and their development partners should target their future investments.
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The role of vaccines in combatting antimicrobial resistance.

TL;DR: In this paper, the authors discuss evidence that vaccines can have a major role in fighting antimicrobial resistance (AMR), and describe the current state of development of vaccines against resistant bacterial pathogens that cause a substantial disease burden both in high-income countries and in low- and medium income countries, discuss possible obstacles that hinder progress in vaccine development and speculate on the impact of next-generation vaccines against bacterial infectious diseases on AMR.
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Advances in nanomaterial vaccine strategies to address infectious diseases impacting global health.

TL;DR: This Review will discuss aspects along with recent nanomaterial advances towards vaccines against infectious disease, with a particular emphasis on HIV/AIDS, malaria and tuberculosis, which are not yet treatable with vaccination.
Journal ArticleDOI

Why and How Vaccines Work.

TL;DR: As the world awaits safe and effective COVID-19 vaccines, the progresses made are celebrated and challenges ahead in vaccines and the science behind them are highlighted.
References
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Journal ArticleDOI

The Global Burden of Latent Tuberculosis Infection: A Re-estimation Using Mathematical Modelling.

TL;DR: Investment in new tools to improve diagnosis and treatment of those with LTBI at risk of progressing to disease is urgently needed to address this latent reservoir if the 2050 target of eliminating TB is to be reached.
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Transmission of Mycobacterium tuberculosis from patients smear-negative for acid-fast bacilli

TL;DR: In San Francisco, the acid-fast-bacilli smear identifies the most infectious patients, but patients with smear-negative culture-positive tuberculosis appear responsible for about 17% of tuberculosis transmission.
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Protection by BCG Vaccine Against Tuberculosis: A Systematic Review of Randomized Controlled Trials

TL;DR: Absence of prior M. tuberculosis infection or sensitization with environmental mycobacteria is associated with higher efficacy of BCG against pulmonary tuberculosis and possibly against miliary and meningeal tuberculosis.
Journal ArticleDOI

The epidemiology, pathogenesis, transmission, diagnosis, and management of multidrug-resistant, extensively drug-resistant, and incurable tuberculosis

TL;DR: Several lines of evidence suggest that alternative mechanisms-including pharmacokinetic variability, induction of efflux pumps that transport the drug out of cells, and suboptimal drug penetration into tuberculosis lesions-are likely crucial to the pathogenesis of drug-resistant tuberculosis.
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