Aquatic Zoonoses

Question 1

What fish pathogens have multiple potential zoonotic species?

Answer 1

Bacterial fish pathogens

Question 2

How are zoonotic helminths typically acquired from fish?

Answer 2

uncooked or undercooked seafood

Question 3

Which virus is identical to Vesicular Exanthema of Swine? Who does this virus affect?

Answer 3

San Miguel Sea Lion Virus
- Exceptionally LOW host specificity (marine and land mammals, primates, reptiles, fish, HUMANS)
- Reportable

Question 4

Most common clinical signs in humans infected with Aeromonas hydrophilia?

Answer 4

localized swelling @ puncture site

Question 5

Edwardsiella tarda

Answer 5

• primarily dz of catfish
• human infection via puncture wounds

Question 6

Streptococcus spp.

Answer 6

• FW and SW fish
• human infection via puncture wound or contamination of existing abrasion (while handling/fileting)

Question 7

Mycobacterium spp.

Answer 7

• non-tubercular group (not reportable)
• aka “fish handler’s disease or “fish tank granuloma” in humans
• cutaneous lesions on extremities
• survives in biofilms, water pipes, pools, tanks

Question 8

Most commonly from tropical fish with cutaneous lesions on extremities

Answer 8

Nocardia; is similar to mycobacterium

Question 9

Exophiala & Veronaea spp.

Answer 9

• dark-walled fungi/ubiquitous saprophytes
• emerging zoonotic pathogen
• cause cutaneous or sytemic mycosis

Saprophyte = lives on dead or decaying organic matter

Question 10

Anisakiasis

Answer 10

infection from eating raw or undercooked FW or marine fish (sushi)
- acute food poisioning signs