If you have ever discovered that an antibiotic that used to work well for you no longer works, the principle is very similar for heartworms. The heartworm population has developed a tolerance for, or resistance to, preventative heartworm medications, so they no longer work as well in some areas.
What percentage of dogs survive heartworm treatment?
What is the treatment? There is some risk involved in treating dogs with heartworms, although fatalities are rare. "A new drug is available that does not have as many side effects, allowing successful treatment of more than 95% of dogs with heartworms."
Can heartworm come back after treatment?
heartworms, so annual testing for heartworm disease is recommended. early infection and starting life-saving therapy, as heartworms can cause significant damage to your dog's heart and lungs. Even after adulticidal therapy, in rare cases a dog will test positive again, requiring further treatment.
Can a dog still have heartworm after treatment?
A: This scenario is uncommon, but it does happen. It is important to know that the heartworm test can remain positive for four-six months following treatment even if all worms were killed, so review the time line of your dog's therapy.
How long does it take for heartworms to dissolve after treatment?
Once treated, the heartworms die slowly and begin to dissolve, taking several weeks. Three to four weeks later, your dog will begin phase two to get rid of the baby heartworms.
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