A 19-year-old man presented with a 1.5-cm nodule on the first dorsal metacarpal ray. The patient denied having contact with fish tanks or fish, but recalled handling many reptiles without gloves in the vivarium where he worked. A culture of a skin biopsy specimen yielded Mycobacterium marinum. The clinical outcome was favourable after a 2-week course of intramuscular gentamicin (180 mg daily) combined with a 6-week course of oral clarithromycin (500 mg twice a day). Doctors should be aware that vivariums, in addition to fish tanks, can be sources of M. marinum exposure.
This first experiment indicates that it is possible to run POC laboratories by nonexpert staff after providing rapid teaching course on board commercial ships. Generalization of on-board POC laboratories is expected to help in improving the medical management of staff and passengers.
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