Heartworms: more of threat than you think
Recently listened to a presentation by the American Heartworm Society. (Did you even know there was one?) They threw out some rather alarming facts:
Thanks to Hurricane Katrina, the U.S. demographics of heartworm have changed forever. Heartworms have always been more of an issue in coastal and warmer, southern states because they are transmitted via mosquitoes. Because so many heartworm-positive dogs were rescued and transported to other states from the Gulf Coast, areas, which rarely saw heartworm cases, are now more likely to have them. Before all those rescued dogs were treated for heartworms in their new state, local mosquitoes were treated to dog blood, swimming with microfilariae (baby heartworms). YUCK!
However, it’s just a matter of time before heartworms spread to cooler, northern states. According to AHS, anywhere it’s warmer than 80°-85° for more than two weeks, that area is in danger of heartworm transmission and heartworm cases have been reported in all 50 states. If you live in a northern state and don’t give monthly heartworm preventative during the cold or cooler months, you may need to rethink this approach.
Another thing putting your dog at risk could be your neighbor. A very large percentage of Americans don’t even give their dogs heartworm preventative. Your dog could get infected from mosquitoes snacking on your neighbor’s dog. Or, in very rare cases, humans can be infected with heartworms. Ewww…
Ivermectin (oral), milbemycin oxime (oral), selamectin (topical) and moxidectin (injected) are the main ingredients in preventative heartworm medicine. The thinking used to be; a safe, 40-day window existed between doses, if a dose was a week or so late, your dog was covered. Now the research shows, 30 days, no grace period. Our vet once told us, you aren’t treating for the coming 30 days, you are treating for whatever happened in the past 30 days. Another reason to opt for that once-a-year heartworm test. Make sure some sneaky mosquito didn’t slip Fido unwelcomed guests.
If your dog is infected with adult worms, they need a different approach to kill the worms safely. It only takes a few months to go from larval to adult stage and heartworms can live for five to seven years. Giving the monthly medicine to kill microfilariae (larval worms) can cause complications if the dog has adult heartworms. Dying adult worms cause serious, sometimes fatal, problems to their host. Often, dogs undergoing treatment must be hospitalized. Heartworm prevention is much preferred to treatment, by both you and your pet.
You and your vet can decide what type of medicine and which brand is best for your pet. Personally, we go with an oral tablet given once per month, which also contains flea prevention/sterilizer (lufenuron). (Tip for litter planners: a few months before planning a litter we change our girl to an oral heartworm medicine WITHOUT lufenuron, and keep her on this until she’s had her pups and is finished nursing. While lufenuron is considered safe for pregnant animals, we’d rather avoid using it while our pups are developing in utero and nursing.)
According to AHS, there is no proven or effective holistic treatment for heartworms. Garlic might work for vampires, but not these blood-borne killers.
If you’d like to learn more, visit:
American Heartworm Society
FDA
At your next vet visit, ask about heartworm prevention and be sure you’ve circled on your monthly dosage day on your calendar. Make this monthly treat a truly heartfelt one.
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