Abstract
New Route of Importation of<i>Mycobacterium tuberculosis</i>Beijing Genotype
Highlights
To the Editor: Mycobacterium tuberculosis (MTB) Beijing genotype is spread throughout the world, and the highest prevalence has been detected in Asia and Eurasia
Six of 8 patients infected with Beijing strains were immigrants; 4 were from South America (3 from Peru, with no epidemiologic links between them, and 1 from Ecuador), 1 was from South Africa, and 1 was from Asia
Studies focused on the analysis of recent transmission of strains between those born in other countries and the autochthonous population in Europe generally conclude that the transfer of strains between both groups is low or moderate [5,6,7]
Summary
To the Editor: Mycobacterium tuberculosis (MTB) Beijing genotype is spread throughout the world, and the highest prevalence has been detected in Asia and Eurasia. All the MTB isolates (n = 510; ≈30% of all MTB cases in Madrid), obtained from patients January 2001– December 2002 from 2 tertiary teaching hospitals in Madrid (population 1,383,790), were genotyped by IS6110 restriction fragment length polymorphism (RFLP) and spoligotyping. Beijing strains were identified in 8 case-patients (1.6%).
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