What zoonotic concern is associated with mycobacteria?

Mycobacteria are a significant concern in both veterinary medicine and public health due to their potential zoonotic transmission. The correct choice highlights the risk to workers and fish owners because mycobacterial infections, such as those caused by Mycobacterium marinum, can be transmitted from aquatic animals to humans, particularly through cuts or abrasions when handling fish. This occupational exposure scenario is crucial, especially for individuals who work closely with aquatic species or who maintain home aquariums.

The other options, while they might touch on relevant aspects of mycobacterial infections, do not encapsulate the broader public health concern associated with the zoonotic potential of these organisms. The mention of ulcerative lesions pertains to the clinical manifestations of the infection but does not address the risk dynamics involved. The option about transmission to fish only is misleading, as mycobacteria also pose risks to humans. Lastly, while the concern about waterborne infections reflects an important aspect of mycobacterial presence in aquatic environments, it does not convey the specific risk to humans who interact with infected fish, which is a significant aspect of the zoonotic risk profile. Thus, the emphasis on risk to workers and fish owners correctly captures the critical occupational and public health implications of myc