Rabies

Rabies

Tuesdays with Tony

Rabies

This week I’m starting with the condensed version of things. Rabies can look like just about anything neurologic, from a little bit quiet, to raging maniac. It can also look like a wound that won’t heal, and is super itchy. Oh, and it can also look like a mild colic that doesn’t respond to Banamine. Even better, you can get Rabies from your horse. The answer? VACCINATE your horse for Rabies. And your dog, and cat, too! And now, the rest of the story.

If you’re a mammal, you can get it

Rabies is an interesting virus. Lots of them are, but Rabies is really good at getting itself passed around. To start with, it only infects mammals, but it does a pretty good job being able to infect all of them. From rats, to foxes, to dogs, cats, and elephants, they all have the potential to get Rabies. Once an animal is infected, it usually takes between three and eight weeks to show symptoms. BUT, and it’s a huge but, it can take a really, really long time for symptoms to show up, like months, and in rare cases, years. Rabies has to travel from the point of entry to the brain before it starts wreaking havoc, and the immune system is fighting it the entire way. This means if an animal gets infected by a bite at the tip of its tail, it’s going to be a long time before it makes it to the brain. Know what keeps it from getting to the brain? A vaccinated animal! Know who makes sure your horse gets all the right vaccines at the right time? My Docs!

Rabies in Da House!

I’m not gonna lie, I find it fascinating what teanie, tiny viruses can do to make sure they live, and reproduce. Now that the Rabies virus has made it to the brain, it’s going to change the behavior of the animal to increase the chances it gets passed around. How crazy is that?!? I mean, I’ve changed the behavior of my humans so it’s more to my liking, but I’m a wickedly intelligent cat. This is a virus. You can’t even see it with a microscope. While signs of rabies can start out pretty varied, almost all infected animals will go through these next phases at some point. The virus will make them start drooling. This is brilliant because the virus is concentrated in the saliva. What better way to spread yourself than make more drool? 

Springhill Equine Veterinary Clinic

Next, the virus makes the animal lose its fear. This means that wild fox is faster to come up to you and act tame. Or, if no humans are around, go after a horse like you see in this video https://www.facebook.com/TCEESFL/videos/1985117155060876/   The fear of water thing is a bit of a myth, but nearly all of them will get aggressive at some point. Which makes sense. This aggression drives them to attack and bite other animals, and then the virus gets to live another day, in another animal. Know what prevents this? A properly vaccinated animal. 

What’s with the crazy quarantines?

Because rabies can be given to humans, the Health Department takes quarantine and testing very, very seriously. My Docs recommend calling your local Health Department if you have an animal you think may have rabies.They will work with animal control, and/or local veterinarians to capture and test the suspicious animal. They will then quarantine your animals, and your property for the safety of everyone else. You don’t want to be the one responsible for spreading rabies to everyone in your neighborhood, do you? Pretty sure that would get you unfriended in real life as well as the Face thingy. 

If your animals are vaccinated by a veterinarian, that quarantine will only be 10 days. I know none of you would vaccinate your animals any other way, because you know your veterinarian is the best way to make sure the vaccines are handled and administered properly, but we all have weird friends and relatives. If you vaccinated your animals, or, even worse, if they aren’t vaccinated at all, that quarantine could be as long as 6 months, because of the potentially long incubation time I talked about earlier. Seems like cheap protection to have your veterinarian properly vaccinate your horse. 

Speaking of Vaccines

I hear this one all the time: my dog and cat get vaccinated for rabies every three years. How come my horse gets it every year? Because your horse is really bad at responding to the vaccine, that’s why. Horses are really bad at the important things like digestion, good support structure, and responding to vaccines. Extensive research shows that horses are protected by the vaccine for 14-16 months. That’s not a spectacular response time. And that’s why your horse should get one every 12 months. Rabies vaccines are also only recognized by the powers that be when administered by a veterinarian. Again, I know you would never administer your own vaccines, but there’s the weird friends and family to think about. 

Back to where I started. Make sure your horse is vaccinated for rabies yearly, and report weird wildlife behavior. 

Now be a well-behaved, non-rabid human and scroll down to the subscribe button. If you subscribe, you get my blog a day early, and you never miss my wisdom and charm. 

Until next week,

~Tony

Tuesdays with Tony is the official blog of Tony the Clinic Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. If you liked this blog, please subscribe below, and share it with your friends on social media! For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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Vaccines: It Really Is Life and Death

Vaccines: It Really Is Life and Death

Tuesdays with Tony

Vaccines

I know this has been said before, but apparently some of you still need reminding: Vaccinate your horses. Every 6 months. By a veterinarian- not something you picked up at the feed store. Don’t skip Rabies, or West Nile, because you’ve owned a lot of horses and you’ve never had one get those diseases. Please humans, for the love! Bonus tip: if your horse has been vaccinated by a veterinarian within the appropriate time period and does contract the disease he was vaccinated against, the vaccine company will probably pay for your treatment costs. Of course, this would be an extremely unlikely scenario, because these vaccines are so incredibly effective. This whole anti-vaccine movement makes me so mad, I could pee outside my litter box!
    Many of these life-threatening diseases are transmitted by mosquitoes. Now, there are 2 ways to protect your horse from such diseases:
    1. Keep your horse indoors in a fully enclosed, air-conditioned, mosquito-free environment 24/7.
    2. Vaccinate.

Seeing as most horses live outside, horse owners usually choose the latter. That’s not to say you can’t work on mosquito control at your farm. Eliminating standing water, installing fans, and fly spray systems are all great ways to cut down on the number of mosquitoes in your barn. But you are never going to be able to prevent your horse from ever being bitten by a single mosquito; and it only takes one bite. Let’s take a closer look at these diseases, to remind us why it’s well worth a few bucks twice a year to protect horses against them.

 

West Nile Virus

    West Nile Virus is transmitted by a bite from an infected mosquito. The early signs of West Nile are subtle. Your horse may have muscle fasciculations, or twitches, of his face, ears, and neck. He may go off his feed. He may have a fever and act lethargic. You may also notice that he is hyper-reactive to sound, touch, or light. Within a few days, most horses will progress to stumbling, falling down, and being unable to stand. They may go blind. They are often distressed because they want to get up, but their legs are too uncoordinated for them to do so. The rule of thumb with West Nile virus is that once a horse is recumbent, or down, they never get back up. If the horse is not euthanized at this point, his signs will progress to seizures or coma, followed by death.
    Now, on to the treatment for West Nile: oh yeah, there isn’t one. All vets can do is supportive care in the form of IV fluids, anti-inflammatories, nutrition, and slinging the horse to keep it standing. If caught early enough and kept standing, eating, and drinking, about 30% of these horses will survive, but many of them will have lasting neurologic deficits.

Eastern Equine Encephalitis

   This is another mosquito-transmitted disease for which there is no treatment. Some fun facts about Eastern Encephalitis: far and away the most cases of this disease are seen right here in Florida. In fact, we  Floridians have already had 18 cases this year! The EEE vaccine only lasts for 6 months max, so you HAVE to be getting your horses boostered twice a year for this one. Another fun fact: Eastern Encephalitis is almost 90% fatal. This means that no matter how early the signs are noticed, nor how soon supportive care is initiated, the horse is most likely not going to survive longer than 5 days.
    Early signs of Eastern Encephalitis include fever, depression, and going off feed. The condition usually deteriorates rapidly to stumbling, circling, head-pressing, and sometimes blindness. EEE is also called “sleeping sickness,” so named because of the characteristic stance horses tend to adopt during the later stages of the disease. These horses hang their heads low between their legs, often with their tongue sticking out and their eyes nearly swollen shut. From there, many horses become recumbent (there’s our new vocabulary word for the day again), and begin to have seizures or go into a coma. At that point, a decision must be made to euthanize the horse.

Rabies

   When people think of Rabies, they often think of that dog (ugh, dogs) in Old Yeller. He had one form of Rabies, called the “furious” form. But there is another presentation of Rabies called the “stuporous” form that many owners don’t know about. It is also important to note that an aggressive, lunging, biting, foaming at the mouth horse would be in the late stages of this disease. Earlier, more subtle signs include dysphagia, or difficulty eating, and difficulty drinking or water aversion. The horse may also exhibit neurologic signs such as incoordination, stumbling, circling, and an altered mental status. In the stuporous form of Rabies, these horses will become unresponsive to their environment. With the furious form, horses can become hyper-reactive and even aggressive.
   The single most important thing for you to know about Rabies is that it is contagious to humans, and it is nearly 100% fatal. The Rabies virus is passed through the saliva of an infected animal. This means that even without sustaining a bite, you can get Rabies from an affected horse or other animal just by coming into contact with secretions from their mouth, eyes, or nose. Vaccinating your horses against Rabies is really a no-brainer. Horses live outside amongst several wildlife species that can carry Rabies, such as skunks, bats, foxes, and raccoons. Moreover, by vaccinating your horse against Rabies, you are really protecting yourself and your own family from exposure.

Tetanus

    Tetanus is a recommended core vaccine for horses because most horses have 4 feet in contact with dirt most of the time. Seeing as Tetanus is a bacteria that lives in the soil (definitely all over Florida), horses have an especially high risk for this disease. The Tetanus bacteria can infect a horse through even the tiniest wound. It is a myth that it takes a puncture from a metal object such as a nail to seed tetanus into a wound; any cut or break in the skin or hoof can create an opportunity for tetanus bacteria to enter.
    Tetanus also has a very high mortality rate when tetanus antitoxin is not administered rapidly. The first sign of tetanus is stiffening of the muscles, often first noted in the jaw, which is why this disease is also termed “lock jaw.” From there, all of the horse’s muscles will begin to contract and will be unable to relax. This results in the “sawhorse stance” typical of tetanus infection. Another common sign of tetanus is third eyelid elevation, which means the pink flap at the inner corner of the horse’s eyes becomes prominent. Over a period of only a few days, horses will go down and be unable to stand. Once the muscles of breathing are affected, the horse inevitably dies.

Western Equine Encephalitis

    If we lived on the West coast I would tell you about Western Equine Encephalitis as well, but thankfully we don’t see that disease round these parts. Suffice it to say, this disease is also spread by mosquitoes, and it causes signs very similar to Eastern Equine Encephalitis.
   You may notice a few themes with these diseases:
    1. They all have a high fatality rate. (That’s why we are so hyper about keeping your horses from getting them.)
     2. They are all easily transmitted to horses, either through the bite of a mosquito or other animal, or through the soil.
    3. They all exhibit some pretty horrible signs that you would never want to witness in your horse.
    4.  They are all easily preventable through vaccines.
   We are fortunate that we have vaccines which are extremely safe and effective against all of these core diseases in horses. Now, it is your job as a responsible horse owner to use your noggin and get your horse vaccinated!
   Ok, I’ll get off my cat-box now.
   Until next week,
        -Tony
P.S. Why don’t you check out the Podcast page while you’re here? After you scroll down a bit more and subscribe to this amazing blog, of course. It’s right below my handsome photo in the purple box.

Tuesdays with Tony is the official blog of Tony the Clinic Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. If you liked this blog, please subscribe below, and share it with your friends on social media! For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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