Chagas Disease

Chagas Disease

This site is devoted towards educating the public, health care professionals, and veterinarians about Chagas disease and its deadly progression. Caused by a parasite, Trypansoma cruzi, a single celled organism that burrows its way into the heart muscle, it is not a disease to be taken lightly, nor is watching someone you love die from the disease a pleasant prospect. In February, 2006 I had never heard of the word, “Chagas” and had no idea that in this day and age of technology and medical advancements, that a disease that causes 50,000 deaths per year and threatens over 120 million at risk people in twenty-one countries could be so “concealed”. My knowledge of the disease and its effects would grow as I slowly and painfully watched my beloved Mastiff’s body become ravaged from the microscopic, single celled parasites as they waged war on his heart, nerves,  muscles and brain and left his tissues filled with dead and dying cells.

Why Is Learning About This Deadly Blood-Borne Parasite So Important?

In Latin America Chagas Disease is the fourth leading cause of death, and as populations of both people and insects migrate, the disease is becoming more prevalent in the United States and a risk to our blood supply.

How could it be that in the United States it is largely unknown to the general public? Did you know that our blood supply is not screened for Chagas’ disease, and it is estimated that up to 370,000 patients with Chagas disease reside in the US? No routine testing of donated blood units for the presense of T. cruzi, the organism that causes Chagas, is done by U.S. blood banks.

(Update: Back in 2006 when this site was first published, there was no routine screening for Chagas Disease that was done by US blood banks. Now, in 2012, screening is done by a majority of the blood banks, although in the United States, there is still not 100% screening of blood donors for antibodies to Trypansoma cruzi.)

At least three cases of Chagas’ disease in the U.S. have resulted from patients receiving Chagas’ infected organs from a Chagas’ positive organ donor, and at least 7 patients have been reported to have been infected by receiving Chagas’ tainted blood transfusions.

It is difficult to obtain accurate statistics either on deaths caused by Chagas disease or on infections themselves. Most victims of the disease are unaware that they are even infected, as are their doctors. Testing is rarely done in the US, even in patients with cardiac disease which is one of the leading causes of death in the country. T. cruzi infections are often missed, more than they are diagnosed, both in animals and in humans.

Canine Infections

At least 400 dogs have died from Chagas disease in Texas, yet these are only the cases that were discovered and reported. How many animals with cardiac disease or heart attacks are actually sent for extended testing following their death? In Texas alone it is estimated that the insects which transmit the disease are infected at a rate of 17-48%. Other states may not even do any testing for the disease in insects, thus it is difficult to say exactly how many insects are positive for the disease in your area.

Ask your veterinarian to do a Chagas disease test on your animals, and you will likely be told that it’s “not necessary”. Tell that to Nan whose cheerful, one year old Laborador Retriever, died in their front yard near San Antonio, one morning soon after been diagnosed with Chagas disease. Or perhaps you may not know that Becky and Wendell Oliver’s 3 month old Labrador “went from a bundle of energy to a limp, wheezing wreck in less than 24 hours. After a rushed trip to the vet, the puppy died next to his water bowl in the Oliver’s garage.”

The disease destroys the heart muscle and may also target the esophagus, colon and brain. A sonogram done on my Mastiff showed a flabby, overstretched, dilated heart muscle, quivering and fluttering. His heart would try to compensate for the lack of pumping ability by adding in extra beats, then racing out of control.  The next few weeks saw my dog age years and even the simple act of going outside became laborious for him. As the disease progressed, each night I’d hear “crackles” in his breathing and have to give diuretics to keep him from drowning in the fluids that were beginning to back up in his lungs.

My goals for this site are simple. To bring the disease of Chagas out in the open so that you, the readers of the site, and the public are aware of the disease.  My hope is that you’ll gain useful information and will be prepared to protect your home, children, and pets from this disease to the best of your ability. And when the public is armed with additional knowledge, then hopefully there will be a push for better diagnosis and treatments for Chagas’. If we do not act upon this disease soon, my fear is that it will progress to a point where it may be extremely difficult to control. Early detection, vector elimination or reduction, and better testing can only be helpful in a disease of this nature. Please pass this site onto your friends, family and anyone you know who may be interested in spreading the word about Chagas disease. May you never have to experience the pain of losing a loved one to Chagas’.


Photo Credits for Logo: Special Thanks to Glen Seplak  (gauchocat), photographer extraordinaire, for his photos which I’ve used in the logo for this site.



6 thoughts on “Chagas Disease”

  1. I greatly appreciate you raising awareness of this disease!! I just found out today the results of my 3yr. dog’s heart condition–due to Chagas disease. I never knew anything about this disease until the day my dog’s heart stopped beating. Although he was revived his prognosis sucks and his life is shortened all because our vet (and the general public) are not aware or least don’t speak of it to prevent or treat before it kills.
    I am angry that our vet never gave us the option to have him tested for this considering we annually get him tested for every other known disease. Had he been tested early on, he could have been treated and possible cured and living a healthy, happy life!!
    He is like ‘old yeller’ and it pains me to know the unknowing, especially when it threatens the very existence of life. I wish we had known in advance….

  2. Hi J, I am so terribly sorry that your dog has Chagas disease and know how devastating the news is to find out that a beloved member of the family has it. I was also very angry that I was never told about it or the possibibilities of my dog contracting it even though we are in Texas and there have been numerous cases here. I haven’t kept up with the research on pimobendan (sp?) but we were able to get that medication under a compassionate use clause (or my vet was) and back then when we went through this, it had helped some dogs with the disease. Just know that my thoughts and prayers are with you and your ‘old yeller’ guy, and again, my heart just aches for you.

  3. I just lost a sweet rescue Frenchie today, it looked like a fast moving heart disease but now the Cardio team at A&M thinks it’s Chagas. I have another rescue Frenchie who got a pacemaker last year, it went into her nerves and not the heart so much.
    I had never heard of this till last July, but I try to spread the word. All the other dogs here will be tested this week, I have to get on top of it. (nerves are shot.)
    I’d like to get in touch with your vet if possible.

  4. So sorry to hear that you were affected by such a devastating disease. You know now what so few people realize, that this disease is real and its in the US. Theres hope though. Through devoted pet owners like yourself we now have a cure for chronic Chagas disease in dogs. We have finished an extensive 3 year investigation into clinical response to two novel drugs in over 50 dogs and have had an amazing response. If anyone has any questions, please email us, we’re here to help.

  5. I think I saw one of these bugs here in Omaha Nebraska!!! I am trying to raise awareness and people don’t seem to even care to know… people are so very
    disappointing to me anymore….

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