title: Simultaneous infection with two drug-susceptible Mycobacterium tuberculosis strains in an immunocompetent host.
abstract: An important assumption for DNA fingerprinting of Mycobacterium tuberculosis is that patients are infected with only one strain at a time. Nonetheless, we demonstrate a case of simultaneous infection with two drug-susceptible strains of M. tuberculosis in an immunocompetent patient by IS6110 restriction fragment length polymorphism and spoligotyping. Epidemiological data prove the patient's involvement in two independent clusters. Thus, double infections should be suspected with fingerprints showing divergent band intensities.
authors.affiliation: Institut für Hygiene, University of Innsbruck, Innsbruck, Austria.
authors.forename: M
authors.initials: M
authors.lastname: Pavlic
authors.forename: F
authors.initials: F
authors.lastname: Allerberger
authors.forename: M P
authors.initials: MP
authors.lastname: Dierich
authors.forename: W M
authors.initials: WM
authors.lastname: Prodinger
mesh_terms: D016000:Cluster Analysis; D016172:DNA Fingerprinting; D004251:DNA Transposable Elements; D004269:DNA, Bacterial / Q000032:analysis / Q000235:genetics; D006801:Humans; D007121:Immunocompetence; D008297:Male; D009169:Mycobacterium tuberculosis / Q000145:classification* / Q000187:drug effects / Q000235:genetics*; D015345:Oligonucleotide Probes; D012150:Polymorphism, Restriction Fragment Length; D014376:Tuberculosis / Q000453:epidemiology / Q000382:microbiology* / Q000635:transmission*
chemical_list: D004251:DNA Transposable Elements; D004269:DNA, Bacterial; D015345:Oligonucleotide Probes