Source: Texas A&M University
A new international study led in part by Texas A&M researchers reveals that canine heartworm has a much older and more complex global history than previously believed. Using whole-genome sequencing of Dirofilaria immitis samples from multiple continents, scientists found significant genetic differences among regional populations, suggesting the parasite spread long before modern dog movement through trade and colonization. Evidence indicates heartworm may have traveled alongside ancient canids and early human migrations, with distinct lineages appearing in places like North America and Australia.
The findings provide an important genetic baseline for understanding heartworm evolution, tracking emerging cases, and monitoring potential drug resistance. Researchers emphasize that this deeper knowledge can improve disease surveillance and prevention strategies. Despite these insights, gaps remain in global data, highlighting the need for further research. The study underscores heartworm’s long-standing impact on animal health and reinforces the importance of routine testing and preventive care for pets.
Read the full story HERE: https://vetmed.tamu.edu/news/press-releases/heartworm-genomic-study-global-evolution/