Dirofilariosis:  dog heartworm

Everyone knows mosquitoes are unpleasant and can cause itching and discomfort when they bite. In a single night, a dog can be bitten by mosquitoes over 80 times! Not only is this unpleasant for your dog, one mosquito bite is enough to transmit the parasite that causes heartworm disease (dirofilariosis). Heartworm disease is spreading, and is present in many countries where mosquitoes are active, including Canada and the USA.

Heartworm can be deadly, causing lung disease and heart failure. Protecting your dog against mosquito bites can help reduce the risk of transmission of heartworm.

Three steps to prevent dog heartworm:

  1. Mosquitoes need only a small amount of water to breed. Make sure you remove standing or stagnant water from your property in gutters, buckets, and open containers. Also prevent flying insects from entering your house.
  2. Protect your dog from the outside, with a topical mosquito repellent. VECTRA 3D repels mosquitoes for 1 month.
  3. Protect your pet from the inside, with preventative treatments that ensure heartworm larvae die before they develop into adults.

Risk factor

Urban area ticks

Living next to wildlife areas / suburban areas

Mosquito endemic area

Travelling & outdoor activity in endemic areas

Outdoor lifestyle

Outdoor lifestyle


See the video to learn more about the disease

VECTRA 3D is available in Canada through licensed veterinarians.