Heartworm prevalent in South, expanding in other hot spots

By Greg Cima

Heartworm disease became more common in hot spots across the U.S. and remained prevalent in the Southeast, Gulf Coast, and lower Mississippi Valley.

Dr. Chris Duke, president of the American Heartworm Society, said the organization’s 2019 survey showed rising numbers of infections with Dirofilaria immitis in Boston, Chicago, Las Vegas, and Minneapolis, as well as in smaller cities such as Durant, Oklahoma, and Redding, California.