An atypical mycobacterial infection of the shoulder

Talbot, Christopher; Rhodes, Bryan

doi:10.4103/0973-6042.96998

Cited by 6 publications

(1 citation statement)

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“…Mycobacterium malmoense was found only in peat and faeces in the present study, but has been detected in porcine lymph nodes by others [ 5 ]. It is increasingly recognised as an important lung pathogen in humans [ 47 ], but has also been associated with human lymphadenitis and septic arthritis [ 48 , 49 ]. Mycobacterium branderi , reported to cause human lung disease and ulcerative tenosynovitis [ 50 , 51 ], was on one occasion detected in faeces in the present study.…”

Section: Discussionmentioning

confidence: 99%

Novel insights into transmission routes of Mycobacterium avium in pigs and possible implications for human health

Agdestein

Olsen

Jørgensen

et al. 2014

Vet Res

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Mycobacterium avium infection is a severe condition in humans, whereas pigs are often subclinically infected. Pig carcasses represent a possible source of human infection. Faecal excretion of M. avium was recently demonstrated in experimentally infected pigs, along with detection of M. avium in apparently normal lymph nodes. The present study investigates faecal excretion in naturally infected herds and the presence of live mycobacteria in lymph nodes. Two pig herds (A and B), with a history of sporadically suspected M. avium infection were sampled. Herd B used peat, as opposed to Herd A. Samples from peat, sawdust, drinking water, faeces and lymph nodes were collected. Identification of mycobacteria was performed by 16S rDNA sequencing and PCR. Mycobacterium avium isolates were analysed by Multi-Locus Variable Number of Tandem repeat Analysis (MLVA). Mycobacterium avium subsp. hominissuis was detected in samples of faeces, peat and lymph nodes from Herd B, often with identical MLVA profiles. Additionally, other non-tuberculous mycobacteria (NTM) were found in the same material. The absence of macroscopic lymph node lesions in the presence of M. avium subsp. hominissuis was frequently demonstrated. In Herd A, only one NTM isolate, which proved not to be M. avium, was found. Faeces might facilitate transmission of M. avium subsp. hominissuis between pigs and maintain the infection pressure in herds. The low incidence of macroscopic lesions together with the massive presence of M. avium subsp. hominissuis in lymph nodes from pigs kept on peat raises questions related to animal husbandry, food safety and human health.

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