SubscribePet Parasite Forecasting and Keeping Pets Safe
Changes in weather and environment have a huge impact on pet parasites. Here’s what pet parents need to know.
As a pet parent, protecting your dogs and cats from pet parasites is a huge part of keeping them healthy. The 2025 Pet Parasite Forecast from the Companion Animal Parasite Council (CAPC) reveals a concerning rise in vector-borne diseases such as Lyme disease, heartworm, anaplasmosis, and ehrlichiosis across the United States.
By staying informed and proactive, pet parents can enhance their pets’ well-being and contribute to their communities’ health. Here’s what pet parents need to know about keeping pets safe from fleas, ticks, and more, and the pet parasite forecast ahead.
Don’t Guess When It Comes To Your Pet’s Care
Don’t Guess When It Comes To Your Pet’s Care
Pet Parasite Forecasting: Lyme Disease
Lyme disease is one of the better-known tick-borne illnesses. Technically, it is caused by a bacterium called Borrelia burgdorferi. Dogs and humans become infected after the bite of a black-legged tick, sometimes called a deer tick.
Lyme disease can be prevented with year-round tick protection, regularly checking your pet for ticks (yes, even indoor cats), and vaccinating your pet if you live in a high-risk area and your vet is healthy enough to receive the vaccine.
From a pet parasite forecasting perspective, areas like the Northeast and Upper Midwest remain high-risk areas for Lyme disease, while heartworm prevalence is intensifying in the Southeast and moving northward along the Mississippi River. This increase is primarily attributed to the expanding habitats of ticks and mosquitoes, driven by environmental changes.
Heartworm Pet Parasite Forecasting
Heartworm disease is a serious and potentially fatal condition caused by parasitic worms transmitted through mosquito bites. Unfortunately, it is a major concern for dogs across the United States.
Heartworm disease often progresses silently, with symptoms like coughing, fatigue, and weight loss appearing only in advanced stages. Prevention through monthly medications and regular veterinary check-ups is the most effective strategy to protect your pet’s health.
According to the Companion Animal Parasite Council (CAPC) report, the 2025 forecast indicates that regions along the Atlantic coast, the Mississippi River, and parts of the Southeast continue to experience high risks.
Most alarming, areas previously considered low-risk, such as parts of New Mexico, Colorado, and Northern California, are now witnessing increased cases due to shifting mosquito populations and environmental changes.
Ehrlichiosis and Tick Forecasting
As a dog mom who shared life with a Cocker Spaniel affected by ehrlichiosis, this one sends goosebumps up my spine. This tick-borne disease is caused by various Ehrlichia species transmitted by different ticks, such as the lone star tick (Amblyomma americanum) and the brown dog tick (Rhipicephalus sanguineus).
According to the CAPC report, areas in the Southeast, Southwest, South-Central, and coastal Atlantic states remain high-risk. Notably, there is an anticipated increase in seropositive dogs in western states like Colorado, Utah, and Wyoming.
Unfortunately, CAPC indicates that the lone star tick, a primary vector for some Ehrlichia species, is expanding its range northward, elevating risks in parts of the Upper Midwest and New England, including Minnesota, Wisconsin, New York, and Massachusetts.
Flea Forecast
Because fleas evolve and seasons change, CAPC offers a daily flea forecast that is free of charge. It shows flea activity across the United States based on the environment and weather.
Pet parents and veterinary professionals can use the 30-Day Pet Parasite Forecast Maps at petdiseasealerts.org for even more localized insights.
Protecting Your Pet From Fleas, Ticks, and Parasites
Fleas, ticks, and other parasites aren’t just a seasonal nuisance, as they pose serious health risks to your pets year-round. By staying informed and proactive, you can make your pet safer and more comfortable all year.
Based on the weather conditions and environmental changes, the CAPC shows parasites are active in many areas, including new ones, all year. Flea and tick prevention options include oral medications, topical treatments, collars, and natural alternatives.
Since heartworm disease is spread through mosquito bites and often progresses silently until symptoms appear, heartworm preventatives and annual testing are the gold standards for protection.
With a proactive approach, you can protect your pets from unnecessary illness and ensure they stay healthy, happy, and parasite-free.
We suggest reading, bookmarking, and sharing these resources to keep your pets safe from parasites:
4 Best Oral Flea and Tick Treatments for Cats
Ticks on Dogs: Prevent Lyme Disease and Other Tick-Borne Illnesses
Home Remedies for Fleas, Effective Treatments, Prevention, and Medication
Photos: Image by Ana from Pixabay and StockSnap from Pixabay
