A recent study published in Frontiers in Veterinary Science has brought attention to a concerning gap in heartworm prevention among dogs. The study, conducted as part of the Golden Retriever Lifetime Study, revealed that less than 40% of the dogs in the longitudinal cohort were receiving preventive heartworm medications at baseline. This finding is troubling, considering that heartworm disease poses a serious and potentially fatal risk to dogs despite being preventable.

Led by researchers at Lincoln Memorial University, the study aimed to identify factors associated with the use of heartworm-preventive medication in golden retrievers. The team uncovered several important factors linked to a decreased likelihood of dogs being on heartworm prevention, including being in the tallest quartile of height, being sexually intact, and receiving supplements.

Conversely, dogs that had received other vaccines or had been diagnosed with an infectious disease or ear, nose, or throat health condition during recent health checkups were more likely to be on heartworm preventives.

Dr. Lauren Wisnieski, Associate Professor of Public Health and Research at Lincoln Memorial University and the study’s principal investigator, stressed the importance of addressing this issue, particularly in light of climate change extending mosquito seasons in certain areas, making year-round vigilance crucial.

Heartworm larvae are transmitted to dogs or cats through mosquito bites, where they mature over several months. Despite advancements in understanding heartworm disease and improved diagnostic tests and treatments, it remains a significant threat to pets nationwide.

Heartworms can grow up to a foot long and cause severe damage to the heart, lungs, and other organs. Treatment, while possible, can be financially burdensome for owners and often requires a lengthy recovery period for the pet if successful.

Dr. Wisnieski highlighted the significance of the study’s findings for veterinary practice, emphasizing the importance of preventive measures over the costly treatment of heartworm disease later on.

Looking ahead, Dr. Wisnieski and her team plan to expand their research to include a broader range of dog breeds, examine the impact of cost on preventive medication use, and explore the influence of the human-animal bond on preventive practices. This comprehensive approach aims to further inform veterinary care and improve heartworm prevention strategies for dogs nationwide.

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