giardiasis

Why You Should Routinely Clean Your Pet’s Food and Water Bowls

Did you know your pet's food and water bowls are a hot spot of risk? Dirty food and water bowls can lead to parasites, affecting your pets and household. In the context of hygiene, pet food bowls are definitely an important part of your cleaning routine to be meticulous about.

We will cover a variety of things:

Good Hygiene & Safety Measures

4 Ways Your Dog’s Water Can Make Them Sick

Determining the right bowls for your pet

Where Do the Bugs Come From?

Zoonotic diseases are diseases that normally infect an animal, but poses a risk to people.

The most common zoonoses with regard to food and water bowls are salmonella, campylobacter, and worms.

These bugs have different mechanisms of causing infection, but they can all be shed into the environment through feces and travel indoors on the pet’s paws or coat.

When your pet licks their fur and then eats from a bowl, this can spread infection onto an object you touch. When you pick up the bowl, you run the risk of getting that same bug on your hands.

Also, with salmonella, the food itself may contain bacteria, with raw meat and eggs posing a special risk. We normally rely on thorough cooking to kill salmonella, so feeding a raw diet to your pet increases the risk.

Food Hygiene

Knowing raw meat could contain salmonella should make you think twice about where you store it.

It should be refrigerated (below 40° F) to slow down the growth of contaminating bacteria. Avoid storing raw meat or any pet food immediately beside human food. Make sure it’s securely wrapped and put in a different section of the fridge whenever possible.

The longer food sits in the open at room temperature, the greater the chance of bacterial contamination and multiplication. With this in mind, serve only the portion your pet can eat in one go so that food isn’t left sitting around. To streamline this and avoid the risks, buy packs of moist food in smaller sizes so you can throw unopened food away rather than store open sachets for days.

Related: Salmonella Infection in Pets & People and Zoonotic Diseases

What’s the Safest Way to Wash Bowls?

Wash them every day: Rinse them under running water and either hand-wash them in hot soapy water or put them on the top rack of the dishwasher (so the dishwasher’s heat doesn’t melt plastic dishes).

When hand-washing, do the pet’s dishes last, using a separate sponge or scourer kept just for the pet’s things. Make the water as hot as you can stand without burning yourself and use liquid or detergent soap. Rinse them well — your pets won’t enjoy a soapy aftertaste, and there’s a slim chance it could make them ill.

Fresh drinking water must be available for your pet at all times, so have at least 2 sets of everything so you have one bowl that’s clean and full of water for your pet while you are cleaning the other one.

Other Safety Measures

Always keep separate utensils for the pet’s food, such as serving spoons, forks, or scoops. Never use the pet’s things (toys, bowls, etc.) as a scoop.

Although some pets have nasty tummy upsets as a result of salmonella and campylobacter—not all do. Some pets are carriers, meaning the bug is in their system—they’re not ill, but they excrete it in their waste. Some of those bacteria (and also worm eggs) get onto the pet’s coat and then onto your hands when you stroke them. Delightful imagery, right? Wash! Your! Hands!


4 Ways Your Dog’s Water Can Make Them Sick

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Your dog’s water bowl is the 3rd most germ-laden place in the house!

We all know clean and fresh water is vital for good health. With this in mind, you probably top up the bowl every time it goes down.

But as it happens, this isn’t sufficient to ensure good health. Merely topping up the water level does nothing to control harmful bacteria or even toxins that can be lurking in the water. Not only are these bugs unpleasant, but also they can cause illness in people, especially those with weak immune systems. So what bugs could be lurking in your pet's water bowl? Surprisingly, quite a few!

1. Giardia

This single-celled parasite may be better known to you as “traveler’s diarrhea.” It can infect people too—not just your pets.

Giardia is shed in feces inside a hardy oocyst. The latter is tough and can survive for long periods of time in warm, humid conditions, and thrives in water.

When a dog drinks infected water, the parasite passes into its gut. Some dogs show no symptoms, but others can develop sickness and weight loss in addition to diarrhea.

A diagnosis is made by examining a fecal sample under a microscope. Most cases respond well to 3-10 days of medication tailored to your pet.

Related: How do pets and people become infected with Giardia?

2. Cryptosporidium

Cryptosporidium is similar to giardia but a whole lot tougher. It’s so tough that it can survive chlorine treatment. Similar to giardia, oocysts are passed in feces that, if they get into the water, are a source of infection for animals and birds.

  • Your vet will prepare a treatment of fenbendazole or metronidazole to kill the parasite in the gut.

  • Bathe and shampoo the dog on the last day of treatment to wash away any oocysts clinging to the coat. Not doing so risks reinfection should the dog lick their fur.

Related: What Can I Catch From My Dog?

3. Leptospirosis

Leptospirosis is a particularly nasty infection with the potential to kill. It’s also a devious infection because signs can range from mild stomach upsets that last for weeks to months to an acute liver and kidney failure that are fatal in hours.

Other symptoms include:

  • Fever

  • Muscle weakness

  • Blood in the urine

  • Loss of appetite

  • Vomiting

  • Diarrhea

  • Collapse due to organ failure

Leptospirosis can be spread by rat urine and especially loves water sources such as standing water, puddles, and birdbaths. The unpredictable nature of leptospirosis means prevention is the best policy.

Luckily, there are vaccines available for your dog. If you live in a risk area for lepto, then your vet will advise giving the vaccine. A word of caution, though: The vaccine must be given yearly, as immunity is often gone completely 12 months after the previous dose.

Humans, however, don’t yet have a vaccine. Did you know pets can pass lepto to people? If your dog shows similar symptoms to those above and you feel unwell, see your physician as a matter of urgency.

Related: You and Your Pet Are at Risk For Leptospirosis

4. Blue-Green Algae

You may be aware that dogs shouldn’t swim in water with an obvious algal bloom—but do you know why?

Cyanobacteria, also known as blue-green algae, are a toxin-producing form of bacteria. This toxin can affect any mammal (yes, including people), causing nerve and liver damage.

Signs of toxicity include:

  • Weakness

  • Muscle tremors

  • Drooling

  • Vomiting

  • Diarrhea

  • Breathing difficulties

  • Collapse and death

There is no antidote to blue-green algae poisoning. Treatment includes rinsing out the stomach to remove contamination and supportive care with intravenous fluids.

So don’t let your dog swim in dirty water or drink from containers of “old” water — give them the fresh stuff.

Related: How Red Tide Affects Your Pet


Biofilms on Your Pet’s Water Bowl Are Bad

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Spot the biofilm in your pet’s water bowl.

Does your dog or cat have a stainless steel drinking bowl? Next time you rinse the bowl under the tap, look for that misty, smoky layer covering the metal.

If you can’t see it, try wiping your finger across the wet metal surface. If your fingertip leaves a clean streak in its path, then you’re looking at a biofilm.

The definition of a biofilm is: “A thin but robust layer of mucilage adhering to a solid surface and containing a community of bacteria and other microorganisms.” So, basically a thin layer of stickiness rich in bacteria that coats a surface. Yum!
You will have experienced a biofilm for yourself the last time you skipped brushing your teeth. Do you know that unpleasant stickiness that coated your teeth? Well, this is a biofilm made up of mucin, which is a mucous-like glue and bacteria combination.

When water comes into contact with a biofilm, it then becomes a weak bacterial soup. When the pet drinks that water, it’s tantamount to challenging their immune system to a duel. If the dog is very young, elderly, or on immune-suppressive drugs, then there’s a risk of them becoming ill.


Ditch The Plastic!

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Plastic is riddled with risks.

Plastic bowls have more than their fair share of problems when it comes to drinking water.

The plastic surface is easily scratched, which provides inviting nooks and crannies for bugs to hide in.

But more than this, plastic bowls are made of chemicals. One in particular, p-benzyl hydroquinone, inhibits the production of melanin (dark pigment).

It’s melanin that gives a black, leathery nose its rich, deep color. When a nose has regular contact with p-benzyl hydroquinone, such as when the dog drinks, it can cause depigmentation. This can lead to a black nose turning mottled or patchy-looking.

Just think—if this substance can do this to the outside of the body, what’s it doing to the inside?

We know that BPA (a chemical that hardens plastic) can interfere with the production of natural hormones in the body. In people, BPAs are linked to diabetes, impaired brain function, and cancer. When you think about how small dogs and cats are compared to people, the dose of BPA they get must be relatively higher.



Micro-Cracks Lurk in Ceramic Bowls

Surely, a good, heavy-duty ceramic bowl is better, right? Yes and no.

Ceramic bowls aren’t regulated in terms of what goes into making them. There is concern that some originating from China contain lead. Lead is a toxic substance that causes destruction of the red blood cells and nerve damage and is generally a substance best avoided.

In addition, the glaze on a ceramic bowl is subject to microfractures. This is called “crazing” within the glaze and can be seen on a microscopic level.

Scientists investigating biofilms found them to be just as bad on ceramic bowls as plastic. They suspect this ultra-fine crazing somehow provides “grip” for the microfilm to stick to.


Stainless Steel Is Best

The hands-down winner when it comes to drinking bowls is stainless steel. However, this is only if they are washed regularly, preferably on a daily basis.

Even a stainless steel bowl builds up a biofilm if it’s not washed properly. Get into the habit of washing your dog’s water bowl daily, preferably with hot, soapy water or by putting it through the dishwasher.

Don’t be tempted to merely top up the water level— this is feeding the bacterial soup. For optimal health for your pets (and family) choose stainless steel and empty it out daily, wash it with hot, soapy water, rinse and fill with fresh water.


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What Can I Catch From My Dog?

Anyone who’s watched their dog go through a bout of diarrhea or the sniffles & sneezes has probably wondered if they, too, were at risk of getting sick.

Can you get sick from your dog?

The answer is yes. There are a number of diseases you can contract from your pet, and they are known broadly as zoonotic diseases. The word “zoonotic” is used to designate any disease that is transmitted from animals to humans. The best known and most feared example of a zoonotic disease is rabies.

Other common zoonotic diseases in dogs include:

Is my dog or myself really that at risk?

Now for the good news: although it’s possible to catch a zoonotic disease that’s been bothering your pup, it’s not likely. That being said, your chance of contracting a zoonotic illness does increase if you have a compromised immune system due to a pre-existing disease or medical condition.

Examples include:

  • Persons infected with HIV or suffering from AIDS

  • Pregnant women

  • Patients being treated with chemotherapy or radiation therapy

  • Elderly people

  • People with chronic diseases or congenital immune system deficiency

  • People who have received organ/bone marrow transplants

If I’m at a higher risk, should I give my dog away?

No! It just means that you need to be extra cautious around your pet. Besides, there are a lot of studies out there that have proven that the benefits of having a pet, especially if suffering from chronic illness, are immeasurable. In fact, sometimes doctors actually recommend pets for their sick patients.

Several measures can be taken to ensure that you remain safe, including regularly monitoring your dog for signs of illness, basic hygienic practices such as washing your hands after handling your pet, and most importantly, avoiding direct contact with your dog’s urine or feces. Make sure you use that pooper-scooper!

Prevention

The best way to reduce or eliminate your risk of contracting zoonotic diseases from your dog is simple and boils down to hygiene and common sense. Here are some more specific suggestions:

  • Make sure the illness in your pet is addressed. Don’t put off visits to the vet if your dog is showing signs of illness. If your dog IS sick, wash your hands after handling him or her.

  • Keep your dog clean! Bathe him or her regularly; doing so will allow you to more closely examine your pooch for signs of illness, especially skin lesions and rashes.

  • De-worm your pup. Getting your dog on a heartworm preventative isn’t only to prevent heartworm alone. Broad-spectrum de-wormers can also prevent roundworms and other parasites!

  • Take care of your dog’s poop while out on a walk and dispose of it all promptly.

  • Give your pets separate water dishes and bowls.

  • Wash pet bedding often.

  • Use flea and tick preventatives regularly.

If you have any questions or concerns, you should always visit or call your veterinarian – they are your best resource to ensure the health and well-being of your pets.


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What Can I Catch From My Cat?

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Although most feline infectious diseases only affect cats, some of these diseases can be transmitted from cats to people. Diseases that can be transmitted from animals to people are called zoonotic diseases. While not comprehensive, this article highlights the most common zoonotic diseases that may be carried by cats and simple precautions you can take to reduce your risk of contracting these diseases. For more information about specific risks, diagnosis, and treatment of zoonotic diseases, contact your physician/health professional.

What's the risk?

The likelihood of an average person contracting a zoonotic disease from a cat is low, but individuals with immature or weakened immune systems are more susceptible to these diseases. This includes infants, individuals with acquired immunodeficiency syndrome (AIDS), the elderly, and people undergoing cancer chemotherapy or receiving other drugs that may suppress their immune systems.

Common Feline Zoonotic Diseases


Bacterial Infections

Cat scratch disease (CSD) is caused by a bacterium called Bartonella henselae, which may be carried in the saliva of infected cats and in the bodies of cat fleas. As the name implies, this bacterial infection is usually transmitted from cat to human via scratches, although it can also be transmitted via bite wounds and when a cat licks the open wounds of a person. Among cats, this bacterium is most commonly transmitted by the bites of infected cat fleas, and it may also be found in the feces of these fleas, which can serve as sources of infection if exposed to an open wound in either a cat or a human.

People with CSD usually develop swelling and possibly a blister at the site of the bite or scratch. Lymph nodes in the region of the wound may swell and become painful, and affected individuals may experience fever, headache, sore muscles and joints, fatigue, and poor appetite. Healthy adults generally recover with no lasting effects, but it may take several months for the disease to go away completely. People with compromised immune systems may suffer more severe consequences, including infections of the eyes, brain, and heart. Severe cases of CSD may require antibiotic therapy to resolve.

Approximately 40 percent of cats are infected with Bartonella henselae, but most show no signs of disease. Antibiotics do not reliably cure infection in these cats and are not currently recommended. For humans, avoiding scratches and bites (for example, by not allowing children to play roughly with cats), washing hands after playing with cats, controlling fleas, and keeping cats indoors all reduce the risk of CSD. Because most cases of CSD result from contact with kittens under one year of age, immunocompromised people should avoid such contact.

Pasteurella multocida is a bacterium found in the mouths of between 70 and 90 percent of cats, and it has been found in between 50 and 80 percent of cat bites in humans that become serious enough to seek medical attention. Cat bites infected with this organism may develop pain, swelling, and redness at the wound site within 24 to 48 hours. Pasteurella-infected cat bite wounds are successfully treated with antibiotic therapy in the vast majority of cases, but more serious complications, such as the spread of bacteria through the blood stream and infection of heart valves, may occur in rare cases.

Salmonella poisoning, also called salmonellosis, is caused by a group of bacteria called Salmonella, and can lead to diarrhea, fever, and stomach pain beginning one to three days after infection. People usually contract salmonellosis by eating contaminated food, such as undercooked chicken or eggs, but it is possible to contract the disease from infected cats, which can carry Salmonella bacteria and pass them in their stool. Although salmonellosis usually resolves on its own, some individuals require medical attention to address severe diarrhea or the effects of the infection on organs other than the digestive tract.

Salmonella is more commonly found in cats that feed on raw meat or wild birds and animals, so owners can reduce the risk of salmonellosis in themselves and their cats by keeping cats indoors and feeding them cooked or commercially processed food. Wearing gloves when cleaning litterboxes or gardening (in case outdoor cats have defecated in the soil) and washing hands thoroughly after these activities is also recommended.

Parasitic Infections

Fleas are the most common external parasite of cats, and their bites can cause itching and inflammation in humans and cats alike. Fleas may also serve as vectors for CSD and other zoonotic diseases. Flea-infested cats may become infected with tapeworms from fleas ingested while grooming. While not common, people can also become infected with tapeworms by inadvertently ingesting fleas.

Scabies, or infection by the mange mite Sarcoptes scabiei, is another zoonotic external parasite of the skin of cats. While not as common as flea infestations, these mites can be passed from infected cats to people, where they burrow into the skin and cause itchy, raised lesions. Treatment in people usually involves the use of topical ointments to decrease itching, diligent treatment of infective pets, and careful cleaning of clothes and bedding.

Certain feline intestinal parasites, including roundworms (Toxocara) and hookworms (Ancylostoma), can also cause disease in people. Children are particularly at risk due to their higher likelihood of contact with soil that has been contaminated by cat feces. Although most people infected with feline intestinal parasites do not show signs of illness, some people may get sick.

Visceral larva migrans, a potentially serious disease that can affect various organs, results from consumption of Toxocara eggs (for instance, when soiled fingers are placed in the mouth). Toxocara larvae may then migrate to abdominal organs, including the liver, or to the central nervous system. Symptoms of visceral larva migrans may include fever, fatigue, coughing, wheezing, and abdominal pain. Ocular larva migrans is the term used for a condition in which Toxocara larvae migrate to the eye, causing visual disturbances, abnormal eye movements, or eye pain and discomfort.

Cutaneous larva migrans, an itchy skin disease, is caused by contact with soil contaminated with Ancylostoma larvae. These larvae may penetrate and migrate under the skin, with resultant inflammation, itching and pain, and raised, red linear lesions in the skin that follow the larva’s migration. Proper hygiene, including washing hands before meals, cleaning soil from vegetables, and reducing exposure to cat feces can prevent infection. Anti-parasite medications for kittens and annual fecal exams for adult cats can reduce environmental contamination and the risk of human infection.

Fungal Infections

Ringworm (or dermatophytosis) is not caused by a worm at all. Rather, it is a skin infection caused by a group of fungi. Infected cats most often come from environments housing large numbers of animals. In cats, ringworm usually appears as a dry, gray, scaly patch on the skin. In humans, ringworm often appears as a round, red, itchy lesion with a ring of scale around the edge. Lesions may be found in a variety of places, including the scalp, the feet (where’s its referred to as “athlete’s foot”), the groin, or the beard. Ringworm is transmitted by contact with an infected animal’s skin or fur, either directly or from a contaminated environment. Infected cats continuously drop fungal spores from their skin and fur. These spores, which remain capable of causing infection for many months, are difficult to eradicate from a household. Children are particularly at risk of infection. Treatment involves the use of either topical antifungal ointments or oral antifungal medication, depending upon the severity and location of lesions. To reduce environmental contamination, confine infected cats to one room until they are free of infection, then thoroughly clean and disinfect the household.

Protozoal Infections

Protozoans are single-celled organisms. The three most common protozoal diseases in cats and humans are cryptosporidiosis, giardiasis, and toxoplasmosis.

Cryptosporidiosis can cause diarrhea, vomiting, fever, abdominal cramps, and dehydration in both cats and people. Either direct or indirect contact with the feces of cats infected with Cryptosporidium organisms can lead to transmission of this disease. As with most other zoonotic diseases, immunocompromised individuals are at the greatest risk of infection. To prevent the spread of infection, schedule annual fecal examinations for your cats, and medicate infected cats as directed by your veterinarian. Other preventive measures include wearing gloves while handling feces-contaminated material and washing hands afterwards.

Giardiasis is caused by infection with the microscopic parasite Giardia. Many animal species (including the cat), are susceptible to infection with Giardia, which is passed in the feces and usually spread to other animals and humans via contaminated water sources, surfaces, or in uncooked food items. The symptoms of Giardia infection include diarrhea, flatulence, abdominal cramps, nausea, and dehydration. A number of prescription drugs are available to treat this condition, and most people that are infected make an uneventful recovery. It is important to realize that the majority of cases of giardiasis in people do not occur as a result of infection by cats, but rather by ingesting water or food contaminated by farm animals or wildlife.

Toxoplasmosis is caused by the parasitic protozoan Toxoplasma gondii. People with weakened immune systems and infants whose mothers are infected during pregnancy can develop severe illness from this parasite. Most people infected with Toxoplasma, however, show no overt signs of disease.

Cats can acquire Toxoplasma by eating infected rodents, birds, or anything contaminated with feces from another infected animal. An infected cat can shed the parasite in its feces for up to two weeks. Once shed in the feces, the parasite must mature for one to five days before it becomes capable of causing infection. However, it can persist in the environment for many months and continue to contaminate soil, water, gardens, sandboxes, or any place where an infected cat has defecated. Although pregnant women or immunosuppressed individuals are often advised to remove cats from the household to reduce the risk of toxoplasmosis, direct contact with cats is very unlikely to spread infection with this organism.

Cats can transmit Toxoplasma to people through their feces, but humans most commonly become infected by eating undercooked or raw meat, or by inadvertently consuming contaminated soil on unwashed or undercooked vegetables. The symptoms of toxoplasmosis include flu-like muscle aches and fever, and headache. In rare cases, more advanced symptoms such as confusion, seizures, vomiting, or diarrhea may be observed.

Basic hygiene can prevent the spread of Toxoplasma from cats to humans. Wear gloves when handling potentially contaminated material (for example, when gardening or scooping the litterbox), and be sure to wash your hands afterwards. Cover children’s sandboxes when not in use to prevent wandering cats from defecating in them.

Pregnant women or immunosuppressed individuals are safest when other household members clean the litter box.

Viral Infections

Rabies is a viral disease that is spread through the bite of an infected animal. Although most viruses infect only their natural host species, rabies is an important exception. Cats are highly susceptible to rabies, which attacks the central nervous system, causing a variety of signs. Rabies is almost always fatal. In people, rabies infections usually occur when an infected animal bites a person. In order to protect human health, rabies vaccination of cats is required by law in many areas. Even if your cat is kept indoors, it is important to keep rabies vaccines current because cats occasionally escape outdoors, and because rabid animals such as bats and raccoons occasionally enter houses. To further reduce your risk of rabies, avoid contact with wildlife and stray animals and see a doctor immediately if you have been bitten by an animal.


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