Koi Herpes Virus Infection (KHV)

Koi Herpes Virus Infection (KHV)

Basic Information

Definition

Cyprinid herpes virus-3 (CyHV-3) infection

Synonym

Epidemiology

Species, Age, Sex

Common carp and koi, Cyprinus carpio, all ages affected, males and females

Risk Factors

Failure to quarantine

Contagion and Zoonosis

Highly infectious among susceptible populations at permissive temperatures; not a zoonotic disease

Geography and Seasonality

Distribution is worldwide. Clinical signs can be seen 10-14 days following exposure to virus at permissive water temperatures, 15°C to 27°C (59°F to 80°F).

Associated Conditions and Disorders

Septicemia, high mortality

Clinical Presentation

History, Chief Complaint

Mortality, lack of quarantine, permissive water temperatures of 15°C to 27°C (59°F to 80°F)

Physical Exam Findings

• No pathognomonic lesions

• Moderate to severe gill necrosis and edema

• Multifocal patches of roughened skin (“sandpaper” texture) with missing scales

• Erratic swimming behavior

• Gasping, piping, congregating in areas of higher oxygen concentration (air stones, surface, waterfalls)

• Enophthalmos, anorexia, and lethargy

• Secondary parasitic and bacterial infections

Etiology and Pathophysiology

• Cyprinid herpes virus-3 (CyHV-3)

• Epitheliotrophic

• Lesions seen on skin, gills, and internal organs such as kidneys and spleen

Diagnosis

Differential Diagnosis

• Pathogenic aeromonad infection or other systemic bacterial disease

• Water quality

• Waterborne toxin

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Tags: Clinical Veterinary Advisor Birds and Exotic Pets

Jul 28, 2016 | Posted by admin in EXOTIC, WILD, ZOO | Comments Off

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