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First report of Mycobacterium avium subsp. hominissuis in a black howler monkey (Alouatta caraya): a study with mycobacterial interspersed repetitive unit–variable number of tandem repeats genetic profiling

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May 06, 2025

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Fig. 1.

Combined minimum spanning tree analysis based on seven-locus (mycobacterial interspersed repetitive unit-variable number of tandem repeats (MIRU-VNTR) genotyping taking the 07, 10, 25, 32, 47, 292 and X3 loci of Mycobacterium avium subsp. hominissuis (MAH) strains. The N32 MAH strain isolated from two black howler monkeys with recurrent diarrhoea (N32) and previously published strain data were used for the analysis. Circle sizes are proportional to the number of isolates sharing an identical VNTR pattern. MAH 104 is a reference strain. Lines connecting two types denote single- or double-locus variations with each length
Combined minimum spanning tree analysis based on seven-locus (mycobacterial interspersed repetitive unit-variable number of tandem repeats (MIRU-VNTR) genotyping taking the 07, 10, 25, 32, 47, 292 and X3 loci of Mycobacterium avium subsp. hominissuis (MAH) strains. The N32 MAH strain isolated from two black howler monkeys with recurrent diarrhoea (N32) and previously published strain data were used for the analysis. Circle sizes are proportional to the number of isolates sharing an identical VNTR pattern. MAH 104 is a reference strain. Lines connecting two types denote single- or double-locus variations with each length

Antibiogram results for the tested Mycobacterium avium strain isolated from black howler monkey (Alouatta caraya) faeces

Antibiotic MIC result Interpretation
Clarithromycin 1 S
Moxifloxacin 8 S
Amikacin 4 R
Linezolid 16 I

Results of mycobacterial interspersed repetitive unit–variable number of tandem repeats (MIRU-VNTR) typing and insertion sequence (IS)901, IS900 and IS1245 identification of a Mycobacterium avium strain isolated from black howler monkey (Alouatta caraya) faeces

Isolate No. Strain origin Number of copies MIRU-VNTR region Subspecies assignment IS901 IS900 IS1245
TR 292 TR X3 TR 25 TR 47 TR 3 TR 7 TR 10 TR 32
N32 Black howler monkey 2 2 2 2 1 2 2 9 MAH +
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