As Stephanie mentioned in the previous blog post, within the first few hours of working with the dogs, we could see how prevalent certain ticks and parasites are in this region of Thailand. This post is meant to give some more background information surrounding this topic and hopefully provide some insight on what we were doing to help!
Ticks were the #1 parasite that we saw during our time with the dogs and Elephant Nature Park. They are blood-sucking parasites that will attach themselves to an animal by physical contact. They use harpoon-like "teeth" that allow them to anchor firmly in place while sucking blood from their animal host. In order to remove a tick from a dog, we used tweezers to firmly pull on the head of the tick to detach them from the skin. We would check every dog that we worked with for ticks. Unfortunately, they are all pretty much colonized by them. As you can imagine, we became very good at "de-ticking" by the end of the week. Ticks are not only an annoyance to the dog by causing irritation, they can also act as vectors of serious disease. Ticks can carry and spread the organisms that cause blood parasites and other potentially deadly diseases. A single tick can carry several disease organisms at the same time. We most commonly saw dogs with ehrlichiosis and anaplasmosis from the brown dog tick, which passes an organism into the bloodstream when it bites. Most positive dogs had clinical signs of fever and bone marrow suppression, whereas the more chronic patients were at risk of bleeding, lameness and kidney disease. These diseases could be fatal for dogs left untreated.
When a new dog would be brought in, we would immediately take a small blood sample in order to run a SNAP test to check for blood parasites. We have these handy in-house blood tests in Canada, so I was surprised to see them in the clinic. They are expensive at about 5 dollars a test, and we would use at least 2 a day. I guess it is a more necessary expense considering how prevalent blood parasites are in their area. Then, If a dog was positive, Doxycycline was the drug of choice to treat the blood parasites mentioned above. Doxy is a member of the tetracycline antibiotics group, and is commonly used to treat a variety of infections. We were very lucky to have this drug on hand, and as you can imagine- it got used quite a bit.
In addition, Demodectic Mange was another huge problem we saw regularly in the clinic. Demodex is a type of mite that occurs naturally in the hair follicles of most dogs in low numbers around the face and other areas of the body. In most dogs, these mites never cause problems. However, in certain situations, such as an underdeveloped or impaired immune system, intense stress, or malnutrition, the mites can reproduce rapidly. This can cause symptoms in sensitive dogs that range from mild irritation and hair loss on a small patch of skin to severe and widespread inflammation and secondary infections. If we suspected there was a dog with mange, we would preform a skin scraping to check for its presence under a microscope.
Unfortunately, most of the dogs that we took skin scrapings from turned up positive. Treatment consisted of a drug called Ivermectin, which is a broad spectrum anti parasitic. We were able to administer the drug by injecting the dose into a meatball of canned dog food --the dogs ate it happily! These dogs would continue to get increasing doses of the drug every day for 7 days.
Even though working with ticks and mites all day probably contributed to the fact that we started to have bad dreams of ticks coming after us, it was a great learning experience that we were glad to be a part of (especially because we would have never been able to see this to the same extent in Canada).
Jaclyn

























