. Giardia is a zoonotic disease, meaning it can be transmitted from animals and humans and vice versa, that affects the gastrointestinal tract causing diarrhoea, abdominal cramps, bloating and nausea. We’ve seen a recent spike in the number of Giardia cases presenting to our hospital and surrounding veterinary clinics. Giardia is a zoonotic disease, meaning it can be transmitted from animals and humans and vice versa, that affects the gastrointestinal tract causing diarrhoea, abdominal cramps, bloating and nausea.

Giardia is considered a zoonotic disease, which means it can be transmitted from animals to humans and vice versa. Giardia is a protozoan parasite that affects the gastrointestinal tract and can cause an infection called giardiasis. The same species of Giardia can infect both humans and various animals, including dogs, cats, and livestock.

Here are some key points to consider regarding Giardia as a zoonotic disease:


Giardia is typically transmitted through ingestion of cysts, which are the durable, infectious form of the parasite. These cysts are found in the faeces of infected animals and can contaminate soil, water, or food sources. Humans and animals can become infected by accidentally swallowing Giardia cysts through various means, such as consuming contaminated water, food, or coming into contact with contaminated surfaces.

Symptoms of Giardia in Pets:

Pets infected with Giardia may not always show symptoms, but when they do, the following signs are common:

  1. Diarrhoea: The most prevalent symptom is diarrhea, which can be intermittent or chronic. The stool may appear soft, watery, and sometimes have a foul odour.


  1. Vomiting: Some pets with Giardia may also experience vomiting, which can lead to dehydration.


  1. Weight loss: Chronic giardiasis can result in weight loss due to the reduced absorption of nutrients from the intestine.


  1. Lethargy: Infected pets may become lethargic and show a lack of interest in usual activities.


  1. Flatulence: Excessive gas and bloating can also be associated with Giardia infection.


  1. Dehydration: Prolonged diarrhea and vomiting can lead to dehydration, which is a serious concern, especially in smaller animals.


Diagnosis and Treatment:

suspect your pet has Giardia, it’s crucial to consult your veterinarian for a proper diagnosis. Diagnosing Giardia typically involves:


  1. Faecal examination: Your veterinarian will perform a faecal floatation test to detect the presence of Giardia cysts in your pet’s stool.


  1. Giardia antigen test: This is a more sensitive and specific test that detects Giardia antigens in the faeces.


Once diagnosed, treatment typically involves:

  1. Medications: Your veterinarian will prescribe medications, to eliminate the Giardia infection. Follow your veterinarian’s instructions closely and complete the full course of treatment, even if your pet’s symptoms improve.


  1. Hydration: If your pet is dehydrated, your veterinarian may recommend fluids or electrolyte supplements to rehydrate them.


  1. Environmental cleanup: Cleaning and disinfecting your pet’s living environment, including food and water dishes, bedding, and litter boxes, is essential to prevent reinfection.


Preventing Giardia in Pets

Preventing Giardia is essential to ensure the well-being of your pet. Here are some tips to help reduce the risk of Giardia infection:


  1. Clean water sources: Ensure your pet has access to clean, uncontaminated water. Avoid allowing them to drink from puddles, stagnant water, or other potentially contaminated sources.


  1. Proper hygiene: Practice good hygiene by picking up after your pet and disposing of waste properly. This helps prevent the spread of Giardia cysts.


  1. Avoid high-risk areas: Be cautious when visiting places with a high likelihood of Giardia contamination, such as dog parks, kennels, and areas with dense concentrations of animals.


  1. Regular veterinary care: Schedule routine check-ups with your veterinarian to monitor your pet’s health and catch any potential issues, including Giardia, early.


  1. Veterinary care: If you suspect your pet has Giardia, it’s important to consult your veterinarian for proper diagnosis and treatment. Regular veterinary check-ups can help monitor and address potential health issues in pets, including zoonotic diseases.


  1. High-risk groups: Some individuals are more vulnerable to severe Giardia infections, including young children, the elderly, and those with compromised immune systems. They should be especially cautious around potentially infected animals and take extra measures to prevent infection.


Zoonotic diseases like Giardia highlight the importance of responsible pet ownership and the need for proper hygiene practices when interacting with pets or animals. It’s essential to be aware of the potential for zoonotic transmission and take precautions to protect both pets and humans from infection.