Heartworm
The Whitsundays is one of the regions with the highest prevalence of heartworm in the world. Heartworm is a serious and potentially fatal disease that affects dogs—and in rare cases, cats—caused by the parasite Dirofilaria immitis. Understanding the risks, prevention, and treatment options is crucial for every pet owner in our community.
What is Heartworm?
Heartworm is a parasitic worm that lives in the heart, lungs, and associated blood vessels of infected animals. The adult worms can grow up to 30 cm (about 12 inches) long and cause significant damage to your pet’s cardiovascular system. In severe cases, heartworm can be fatal.
How is Heartworm Transmitted?
Heartworm is transmitted through the bite of infected mosquitoes, which are abundant in the Whitsundays due to our tropical climate. When a mosquito bites an infected animal, it picks up microscopic larvae. These larvae develop in the mosquito and are then transmitted to your dog or cat during the next bite.
Because of the high mosquito activity in our region, the Whitsundays is considered a hotspot for heartworm, making year-round prevention essential.
Signs and Symptoms
Heartworm infection can develop silently for months or even years. Early detection is difficult, but common signs in dogs may include:
- Persistent cough or difficulty breathing
- Lethargy and reduced stamina
- Weight loss and decreased appetite
- Swollen abdomen due to fluid accumulation
- Heart failure in severe cases
Cats are less commonly affected, but even a small number of worms can cause serious health issues. Symptoms in cats can include vomiting, coughing, difficulty breathing, and sudden collapse.
Prevention is Key
The best way to protect your pet is through consistent prevention. Options include:
- Annual Proheart injection – long-lasting, consistent protection, highly effective, less maintenance
- Monthly oral – easy-to-administer and highly effective
- Mosquito control measures – reducing standing water around your property can lower mosquito populations
Testing and Early Detection
Early detection is critical for safe and effective treatment. Heartworm tests are simple and involve a small blood sample.