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Merck Manual
Veterinary Manual
The trusted provider of veterinary information since 1955

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VETERINARY PET
Otostrongylus circumlitus larva
otostrongylus-circumlitus-larva-exlmm14-mcbain-sized
Otostrongylus circumlitus larva

    Photomicrograph demonstrating an Otostrongylus circumlitus larva. Larvae may be found in respiratory samples or in feces once the parasite infection is patent.

Courtesy of Dr. James McBain.

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Parasitic Diseases of Marine Mammals

Merck & Co., Inc., Rahway, NJ, USA (known as MSD outside of the US and Canada) is dedicated to using the power of leading-edge science to save and improve lives around the world.  The Merck Veterinary Manual was first published in 1955 as a service to the community.  The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Vet Manual outside of North America.

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