Ehrlichiosis is a bacterial infection in dogs caused by the bacterium Ehrlichia canis. It is spread by the bite of infected ticks and can cause symptoms such as fever, loss of appetite, joint pain, and anemia. In severe cases, it can lead to bleeding disorders, organ failure, and death.
Treatment involves antibiotics, and preventing tick bites through the use of tick control products is the best way to prevent the disease. If you suspect your dog may have ehrlichiosis, it is important to consult a veterinarian for proper diagnosis and treatment.
What is Ehrlichiosis?
Ehrlichiosis is a bacterial infection caused by the bacterium Ehrlichia, which is spread by the bite of infected ticks. It affects animals, including dogs, and can cause symptoms such as fever, loss of appetite, joint pain, and anemia. In severe cases, it can lead to bleeding disorders, organ failure, and death.
Early diagnosis and treatment with antibiotics is important for a successful outcome. Preventing tick bites through the use of tick control products is the best way to prevent the disease.
Symptoms of Ehrlichiosis in Dogs

The symptoms of ehrlichiosis in dogs can vary and may include:
- Fever
- Loss of appetite
- Lameness or joint pain
- Fatigue and weakness
- Weight loss
- Anemia
- Enlarged lymph nodes
- Nosebleeds or bleeding from the gums
- Eye discharge
- Diarrhea
These symptoms may not appear immediately and can develop slowly over time. It is important to take your dog to a veterinarian if you suspect they may have ehrlichiosis or have been exposed to ticks. Early diagnosis and treatment is important for a successful outcome.
Causes of Ehrlichiosis
Ehrlichiosis in dogs is caused by the bacterium Ehrlichia canis. It is spread by the bite of infected ticks, primarily the brown dog tick. When a tick bites a dog, it can transmit the bacteria into the dog’s bloodstream, where it infects and multiplies in white blood cells. The disease can progress and cause symptoms over time if left untreated. Preventing tick bites through the use of tick control products is the best way to prevent ehrlichiosis in dogs.
Diagnosing Ehrlichiosis in Dogs
Diagnosing ehrlichiosis in dogs typically involves a combination of physical examination, medical history, and laboratory tests. The following tests may be performed to diagnose ehrlichiosis:
- Complete Blood Count (CBC) to check for anemia, low white blood cell count, and elevated platelet levels
- Serologic tests to detect antibodies against Ehrlichia canis in the blood
- Polymerase chain reaction (PCR) test to detect the DNA of the bacteria in a blood sample
A veterinarian may also perform a physical examination to look for symptoms such as joint pain, fever, and swollen lymph nodes. If ehrlichiosis is suspected, it is important to get prompt and appropriate treatment to prevent serious complications. Treatment with antibiotics is typically effective in
treating ehrlichiosis, but early detection is important for the best outcome. If you suspect your dog may have ehrlichiosis, it is important to consult a veterinarian for proper diagnosis and treatment.
Ehrlichiosis in Dogs Treatment
Treatment for ehrlichiosis in dogs typically involves antibiotics, and the type of antibiotic used may vary depending on the severity of the infection and the stage of the disease. Some common antibiotics used to treat ehrlichiosis include doxycycline, minocycline, and amoxicillin.
The length of treatment and the specific antibiotic used will be determined by your veterinarian based on the severity of your dog’s symptoms and their response to treatment. In some cases, supportive care such as fluids and blood transfusions may be necessary, especially in severe cases where the disease has progressed.
It is important to follow your veterinarian’s instructions and give the full course of antibiotics, even if your dog’s symptoms improve before the treatment is complete. It is also important to prevent tick bites and re-infection by using tick control products.
If you suspect your dog may have ehrlichiosis, it is important to consult a veterinarian for proper diagnosis and treatment. Early diagnosis and treatment is important for a successful outcome.
Prognosis for Dogs With Ehrlichiosis
The prognosis for dogs with ehrlichiosis depends on various factors such as the stage of the disease, the severity of symptoms, and how quickly treatment is started. In general, dogs that are diagnosed and treated early have a good chance of making a full recovery. However, if the disease is not detected and treated early, it can lead to serious complications and a poorer prognosis.
Treatment with antibiotics is typically effective in treating ehrlichiosis, but the length of treatment and the specific antibiotic used will depend on the severity of the infection. In some cases, supportive care such as fluids and blood transfusions may also be necessary.
It is important to follow your veterinarian’s instructions and give the full course of antibiotics, even if your dog’s symptoms improve before the treatment is complete. Preventing tick bites and re-infection through the use of tick control products is also important for a successful outcome.
If you suspect your dog may have ehrlichiosis, it is important to consult a veterinarian for proper diagnosis and treatment. Early diagnosis and treatment is important for a favorable prognosis.
How to Prevent Ehrlichiosis
Preventing ehrlichiosis in dogs can be achieved by taking steps to prevent tick bites:
- Use tick control products: Topical or oral tick preventive medication can be used to reduce the risk of tick bites and transmission of disease.
- Keep your yard tick-free: Maintain a tick-free environment by keeping your yard mowed, removing leaf litter, and keeping your dog away from tall grasses and woods.
- Check your dog regularly for ticks: Check your dog daily for ticks and remove any ticks promptly. Pay special attention to areas such as the ears, neck, and legs where ticks are commonly found.
- Keep your dog indoors: Keep your dog indoors, especially during peak tick season.
- Wear protective clothing: When hiking or walking in areas known to be tick-infested, wear protective clothing and use insect repellent.
It is also important to have your dog tested regularly for ehrlichiosis and other tick-borne diseases. If you suspect your dog may have ehrlichiosis, it is important to consult a veterinarian for proper diagnosis and treatment. Early diagnosis and treatment is important for a successful outcome.
Can ehrlichiosis be transmitted from dogs to humans?
Yes, ehrlichiosis can be transmitted from infected dogs to humans. This is known as zoonotic ehrlichiosis, and it is caused by the same bacterium (Ehrlichia canis) that causes ehrlichiosis in dogs.
Humans can get ehrlichiosis from the bite of an infected tick. The disease is more commonly seen in people who work with dogs or have close contact with dogs, such as veterinarians and dog handlers.
Symptoms of zoonotic ehrlichiosis in humans include fever, headache, muscle and joint aches, and fatigue. If left untreated, the disease can progress and cause serious complications.
To prevent zoonotic ehrlichiosis, it is important to take measures to prevent tick bites, such as using tick control products, checking for ticks regularly, and wearing protective clothing when spending time in tick-infested areas. If you suspect that you may have been infected with ehrlichiosis, it is important to consult a healthcare provider for proper diagnosis and treatment.