Heartworms: Everything you need to know

Heartworms are internal parasites transmitted through mosquito bites. They can affect the heart and lungs and may develop without obvious early signs. Because infections can progress silently, understanding transmission and prevention is critical.

Overview

Heartworm infection begins when an infected mosquito transmits microscopic larvae into the bloodstream. These larvae migrate through the body over time, eventually reaching the lungs and heart, where they continue to develop.
The development process can take several months. During this time, the infection may not produce clear symptoms, making early detection difficult. Even a small number of parasites can cause significant effects once they reach critical organs.
Because transmission depends on mosquitoes, risk is influenced by environmental exposure. However, mosquitoes can enter indoor spaces, meaning exposure is not limited to outdoor environments.
The complexity of the parasite’s life cycle and the difficulty of early detection make prevention essential.

Treatment and Prevention

Prevention is the most effective way to manage heartworms.
If infection occurs, management can be complex, which is why preventive care is critical.
Use veterinary recommended preventive treatments consistently to reduce the risk of infection. Limiting exposure to mosquitoes and maintaining regular veterinary check ups also supports early detection and protection.
Continuous prevention helps reduce risk and protects long term health.