Canine Distemper in Dogs: Symptoms, Hard Pad Disease, and Prevention Strategies"

Introduction

Canine Distemper is a highly contagious, life-threatening viral disease, which is a result of a Paramyxovirus infection. It affects the respiratory, gastrointestinal, and central nervous systems of dogs, as well as other wild animals like foxes and wolves. Yet, despite the availability of a vaccine, this viral infection still accounts for a high mortality rate in puppies and unvaccinated adult dogs in Pakistan.

Canine distemper virus




Transmission: How Dogs Get Infected

​Aerosol Spread: 

The most common mode of infection in dogs is through sneezing or coughing, which throws infected droplets in the air.

​Direct Contact: 

Through sharing food, water bowls, and urine, blood, and saliva.

​Placental Transfer: 

An infected mother dog can transmit this virus to its puppies before birth.

​Clinical Signs: The Three Main Stages

CDV is referred to as a "multi-systemic" infectious disease, which affects different parts of a dog's body in stages:

​Respiratory Stage:

​High fever, discharge of pus from the nose, and cough.

​Development of secondary pneumonia.

​Gastrointestinal Stage:

​Vomiting and diarrhea.

​Loss of appetite and dehydration.

​Neurological Stage (The Final Phase):

​"Chewing Gum Fits": Jaw twitching and saliva discharge.

Seizures, Circling, Muscle Tremors.

Hard Pad Disease: 

Thickening and hardening of the foot pads and nose

Diagnosis

The clinical diagnosis of CDV is usually made on the basis of "hard pads" on the feet and respiratory distress. The tests for CDV infection are:

Rapid Test Kits (ICG): 

CDV antigen detection by a quick test.

PCR: 

Detection of CDV RNA in blood or swabs.

Inclusion Bodies: 

Detection of CDV inclusions in blood smears or conjunctival scrapings.

Management and Supportive Care

Since CDV is a virus, there is no specific cure for the infection. Treatment is symptomatic:

Fluid Therapy: 

Replacing fluids to combat dehydration due to diarrhea/vomiting.

Broad-spectrum Antibiotics: 

Administering antibiotics to prevent secondary bacterial infections of the lungs.

Anticonvulsants: 

Administering anticonvulsants to control seizures during the neurological phase.

Nursing Care: 

Keeping the eyes and nose clear of discharge.

Prevention: The Power of Vaccination

The only way to prevent CDV infection in dogs is through vaccination.

Puppy Shots:

 Vaccinating puppies from 6-8 weeks of age, then every 3-4 weeks until 16 weeks of age.

Annual Boosters:

 Boosters every year to maintain lifelong immunity.

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