04/08/2026
IS YOUR PET ON HEARTWORM PREVENTATIVE?
The America Heartworm Society (AHS) has released a new Heartworm incidence map, using data collected from veterinary practices and shelters across the US.
For the first time, Texas topped the list of leading states for heartworm incidence. The remaining top 5 were Louisiana, Arkansas, Mississippi, South Carolina. Rounding out the top 10 states were Tennessee, Alabama, North Carolina, Florida and Georgia.
Almost 3 in 5 Veterinarians (59%) said heartworm rates had stayed the same, with the remainder divided between those who saw rates increase (19%) and decrease (22%) Only 10% reported seeing no heartworm cases.
While weather was seen as a factor in changes to heartworm rates, Veterinarians see "human" factors including poor compliance and heartworm-positive dogs moving into their practice areas as even more significant.
Here at Houston Lake Animal Hospital, we have seen an INCREASE in heartworm positive dogs, so please make sure your pets are taking their preventative regularly!