Resultados: 10

Emergence of bedaquiline-resistant tuberculosis and of multidrug-resistant and extensively drug-resistant Mycobacterium tuberculosis strains with rpoB Ile491Phe mutation not detected by Xpert MTB/RIF in Mozambique: a retrospective observational study

Lancet, Infect. dis.; 12 (23), 2023
Background In 2021, an estimated 4800 people developed rifampicin-resistant tuberculosis in Mozambique, 75% of which went undiagnosed. Detailed molecular data on rifampicin-resistant and multidrug-resistant (MDR) tuberculosis are not available. Here, we aimed at gaining precise data on the determinants o...

Diagnostic accuracy of a three-gene Mycobacterium tuberculosis host response cartridge using fingerstick blood for childhood tuberculosis: a multicentre prospective study in low-income and middle-income countries

Lancet, Infect. dis.; 12 (23), 2023
Background Childhood tuberculosis remains a major cause of morbidity and mortality in part due to missed diagnosis. Diagnostic methods with enhanced sensitivity using easy-to-obtain specimens are needed. We aimed to assess the diagnostic accuracy of the Cepheid Mycobacterium tuberculosis Host Response pr...

Fine-grain population structure and transmission patterns of Mycobacterium tuberculosis in southern Mozambique, a high TB/HIV burden area

Microb. genom; 8 (7), 2022
Genomic studies of the Mycobacterium tuberculosis complex (MTBC) might shed light on the dynamics of its transmission, especially in high-burden settings, where recent outbreaks are embedded in the complex natural history of the disease. To this end, we conducted a 1 year prospective surveillance-based ...

External Quality Assessment Programme for Early Infant Diagnosis of HIV-1, Mozambique, 2011-2014

This study evaluated a National External Quality Scheme Program for early infant diagnosis of HIV. Fourteen laboratory technicians participated, and nine testing panel cycles were sent between 2011 and 2014. The response rate was 100% for the first eight panels, and the number of technicians with a test ...

Evaluation of the Ogawa-Kudoh method for tuberculosis isolation in two health units in Mozambique

Background: Mozambique is among the highest tuberculosis, tuberculosis–HIV and multidrug-resistant-tuberculosis burden countries. Although molecular technologies are available in-country, mycobacterial isolation through culture remains an important tool for tuberculosis diagnostics and drug susceptibil...

Clonal expansion across the seas as seen through CPLP-TB database: A joint effort in cataloguing Mycobacterium tuberculosis genetic diversity in Portuguese-speaking countries

Infect. gent. evol; 72 (), 2019
Tuberculosis (TB) remains a major health problem within the Community of Portuguese Language Speaking Countries (CPLP). Despite the marked variation in TB incidence across its member-states and continued human migratory flux between countries, a considerable gap in the knowledge on the Mycobacterium tube...

Perfil de sensibilidade dos isolados de Mycobacterium tuberculosis de pacientes com tuberculose e coinfectados TB/HIV na cidade da Beira, Sofala, Moçambique

A tuberculose (TB) é uma doença infecciosa que ameaça a humanidade há séculos. Recentemente grandes avanços foram conseguidos no combate à tuberculose, entretanto a resistência bacilar e a coinfecção pelo Vírus de Imunodeficiência Humana (HIV) persistem como os principais desafios dos program...

Mycobacterium tuberculosis Beijing genotype is associated with HIV infection in Mozambique

PLos ONE; 7 (9), 2012
The Beijing genotype is a lineage of Mycobacterium tuberculosis that is distributed worldwide and responsible for large epidemics, associated with multidrug-resistance. However, its distribution in Africa is less understood due to the lack of data. Our aim was to investigate the prevalence and possible t...

MLVA based classification of Mycobacterium tuberculosis complex lineages for a robust phylogeographic snapshot of its worldwide molecular diversity

PLos ONE; 7 (9), 2012
Multiple-locus variable-number tandem repeat analysis (MLVA) is useful to establish transmission routes and sources of infections for various microorganisms including Mycobacterium tuberculosis complex (MTC). The recently released SITVITWEB database contains 12-loci Mycobacterial Interspersed Repetitive ...

Molecular diversity of Mycobacterium tuberculosis isolates from patients with pulmonary tuberculosis in Mozambique

BMC microbiol; 10 (195), 2010
Background: Mozambique is one of the countries with the highest burden of tuberculosis (TB) in Sub-Saharan Africa, and information on the predominant genotypes of Mycobacterium tuberculosis circulating in the country are important to better understand the epidemic. This study determined the predominant s...