Veterinary Assistant Practice Exam 2025 - Free Veterinary Assistant Practice Questions and Study Guide

Heartworms are caused by a parasitic roundworm called Dirofilaria immitis, which is transmitted to dogs and cats primarily through mosquito bites. The preventive measures against heartworms typically consist of annual vaccinations and regularly administered preventive medication.

Annual vaccinations are a critical component of a heartworm prevention program, as they help ensure that pets receive the necessary protection during peak mosquito season when the risk of infection is heightened. Additionally, testing for heartworm disease is often performed annually to monitor the health status of pets and ensure that preventive measures are effective.

In contrast, fleas, ticks, and ear mites are generally managed through topical or oral treatments rather than vaccinations. Fleas and ticks are commonly treated with flea and tick preventatives that are applied monthly or seasonally, while ear mites require specific topical treatments to eradicate them from the pet’s ear canal. Thus, the treatment and prevention strategy for heartworms distinguishes them from these other parasites, making the approach to heartworm management unique in the context of annual vaccinations.