Prevention
You also educate Tom about heartworm preventative . This can come in the form of a chewable tablet or an injection.
Heartworm preventative kills heartworm larvae. So it doesn’t prevent dog’s from getting heartworm – it just prevents the worms from taking up permanent residence in the dog.
That way, if Emma is bitten by another infected mosquito, the medication will kill the worms before they can reach her heart and pulmonary vessels.
