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

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Distribution of Chronic Wasting Disease in North America
chronic-wasting-disease-usa-map-usgs-june-2021-sized
Distribution of Chronic Wasting Disease in North America

    Distribution of chronic wasting disease in North America, June 2021.

Courtesy of USGS and Bryan Richards, USGS National Wildlife Health Center. Public domain.

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Chronic Wasting Disease

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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