Smooth Tubercle Bacilli: Neglected Opportunistic Tropical Pathogens

Frontiers in Public Health
Djaltou Aboubaker OsmanMichel Drancourt

Abstract

Smooth tubercle bacilli (STB) including "Mycobacterium canettii" are members of the Mycobacterium tuberculosis complex (MTBC), which cause non-contagious tuberculosis in human. This group comprises <100 isolates characterized by smooth colonies and cordless organisms. Most STB isolates have been obtained from patients exposed to the Republic of Djibouti but seven isolates, including the three seminal ones obtained by Georges Canetti between 1968 and 1970, were recovered from patients in France, Madagascar, Sub-Sahara East Africa, and French Polynesia. STB form a genetically heterogeneous group of MTBC organisms with large 4.48 ± 0.05 Mb genomes, which may link Mycobacterium kansasii to MTBC organisms. Lack of inter-human transmission suggested a yet unknown environmental reservoir. Clinical data indicate a respiratory tract route of contamination and the digestive tract as an alternative route of contamination. Further epidemiological and clinical studies are warranted to elucidate areas of uncertainty regarding these unusual mycobacteria and the tuberculosis they cause.

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Citations

Sep 20, 2017·Infection and Immunity·Fériel BouzidMichel Drancourt
Dec 31, 2019·PloS One·Mustapha FellagMichel Drancourt
Jun 11, 2017·BMC Research Notes·Djaltou Aboubaker OsmanMichel Drancourt
Jun 2, 2017·Frontiers in Cellular and Infection Microbiology·Fériel BouzidStéphane Canaan
Jul 11, 2018·Frontiers in Cellular and Infection Microbiology·Henan LiHui Wang
Apr 11, 2019·Frontiers in Immunology·Joseph W SaelensDavid M Tobin
Jan 14, 2017·Microbiology Spectrum·Jaime Esteban, Maria-Carmen Muñoz-Egea

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Datasets Mentioned

BETA
AJ619854

Methods Mentioned

BETA
electron microscopy

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