NAVLE® Question of the day

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January 3, 2025
NAVLE

Some farmed salmon appear lethargic with darkened skin and exophthalmia. Necropsy of one that died reveals vent hemorrhages and grayish granulomatous nodules on the kidneys.

Gram stain from the kidney lesion reveals the intracellular bacteria shown below.

What is the best option to prevent this condition?