8/4/2023 0 Comments Sentinel heartworm comparison![]() Useful information has since emerged from a small study conducted by researchers at Auburn University’s College of Veterinary Medicine in Alabama. ![]() ![]() “Most credible reports of lack of efficacy (LOE) that are not attributable to compliance failure are geographically limited at this time.” The statement did not identify the region, but investigations have centered on the Mississippi Delta. Translation: investigators have verified that one strain of heartworms shows resistance to heartworm preventives in the lab.įurther, the statement offered a hint that the resistant strain is not yet present everywhere heartworms are found. There is evidence in some heartworm populations for genetic variations that are associated with decreased in vitro susceptibility to the macrocyclic lactones.” Participants concluded that while we do not have a comprehensive picture of the scope or severity of the problem, we agree that there is a problem. ![]() In August 2010, representatives of the American Heartworm Society (AHS), the Companion Animal Parasite Council (CAPC), and experts in the field of nematode resistance met in Atlanta for a “heartworm roundtable.” A joint statement released afterward announced, “This meeting was convened to discuss the implications of reports of lack of efficacy of macrocyclic lactones against Dirofilaria immitis, the canine heartworm. Reports of dogs developing heartworm disease despite being given preventives year-round were dismissed for years as being due to “owner non-compliance,” but the outcry finally became too loud to ignore. The answer depends a bit on where you live and what you’ve already been doing to prevent heartworm infection. ![]()
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