Toxoplasmosis & Cat Owners

What is Toxoplasmosis?

Toxoplasmosis is an infection caused by a microscopic parasite called Toxoplasma gondii. More than 60 million people in the United States carry the Toxoplasma parasite. Toxoplasmosis can cause severe illness in infants infected before birth (When their mothers are newly infected during pregnancy), or in persons with a weakened immune system.

What role do cats play in the spread of Toxoplasmosis?

Cats get Toxoplasma infection by eating infected birds, rodents, and other small animals, or anything contaminated with feces from another cat that is shedding the microscopic parasite in it's feces. After a cat has been infected, it can shed the parasite for up to two weeks. The parasite becomes infective one to five days after it is passed in the feces of the cat. The parasite can live in the environment for many months and contaminate soil, water, fruits and vegetables, sandboxes, grass where animals graze for food, litter boxes, or any place where an infected cat may have defecated.

How are people infected with Toxoplasma?

There are several ways in which people may become infected with toxoplasosis.

• Eating food, drinking water, or accidentially swallowing soil that has been contaminated with infected cat feces (think: homegrown produce that feral cats may have access to!).

• Eating raw or undercooked meat from animals (especially pigs, lamb, or wild game) that have been infected with Toxoplasma.

• Directly from a pregnant woman to her unborn child when the mother becomes infected with Toxoplasma just before or during pregnancy.

What are the symptoms of toxoplasmosis?

Individuals with a healthy immune system:

Most people who become infected with Toxoplasma do not know it and have no symptoms. However, when illness occurs, it is usually mild. Some may feel like they have the “flu”, with swollen lymph glands, or muscle aches and pains that last for several weeks or more. Although rare, eye disease may also occur.

Individuals with weakened immune systems:

People with weakened immune systems may experience severe symptoms. The most common symptoms in people with HIV infection are headache, confusion, and fever. Other symptoms include seizures, poor coordination, and nausea or vomiting.

Infants infected before birth:

Most infants infected with Toxoplasma before birth show no symptoms at birth. However, many are likely to develop symptoms later in life. These include vision loss, mental disability, and seizures.

How can I protect myself from toxoplasmosis?

Several steps can be taken to protect yourself and others from toxoplasmosis.

• Change your cat litter boxes daily. Toxoplasma takes more than one day to become infectious. If you are pregnant or have a weakened immune system, ask someone else to change the litter box. If this is not possible, wear disposable gloves and wash your hands thoroughly with soap and water afterward.

• Cover any outdoor sandboxes when not in use to keep cats from defecating in them.

• Avoid adopting stray cats, especially kittens, off the streets (go through an agency such as our local Cat Depot to assure a happy & healthy stray). Younger cats are more likely to be releasing Toxoplasma in their feces.

• Do not eat undercooked meat. Cook meat until the internal temperature reaches 160° Fahrenheit.

• Wash all kitchen supplies (such as knives and cutting boards) that have been in contact with raw meat.

• If you have a weakened immune system, it is important to talk to your health care provider about getting a blood test to determine if you have been infected with Toxoplasma.

How can I protect my cat from toxoplasmosis?

Protecting your cat from toxoplasmosis may also help to protect you from toxoplasmosis.

• Feed your cat commercial dry or canned food.

• Never feed cats raw meat because this can be a source of Toxoplasma infection.

• Keep indoor cats indoors so they do not become infected by eating small animals.

Do I have to get rid of my cat?

No, you do not have to give up your cat. Owning a cat does not mean you will be infected with the parasite. It is unlikely that you would be exposed to the parasite by touching the infected cat, because cats usually do not carry the parasite on their fur coat. In addition, cats kept indoors (that do not hunt prey or feed on raw meat) are not likely to be infected with Toxoplasma. But, if you are pregnant, or have a weakened immune system, it is important to protect yourself from infection.

Can toxoplasmosis be treated?

Yes, most certainly. There is a treatment for toxoplasmosis. In an otherwise healthy person, mild symptoms typically go away within several weeks to months, and treatment is not needed. However, treatment may be recommended for an otherwise healthy person with eye disease due to toxoplasmosis. A woman who becomes infected during pregnancy can be treated with medication that may protect her unborn child from toxoplasmosis. Mother and baby should be monitored closely during pregnancy and post-birth.

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How do pets and people become infected with Giardia?

Did you know:

Giardia is a tiny parasite that lives in the intestines of various animals.

Giardia is passed in the feces of animals in the form of a cyst that is resistant to many environmental extremes. These cysts are scattered through the environment in feces or fecal-contaminated water. These cysts are infectious when passed, and upon ingestion by the next host, the encysted trophozoites emerge from the cysts in the intestinal tract. Within the intestine, the trophozoites feed and multiply. Some trophozoites will then form a cyst wall around themselves, and those cysts will be passed in the feces to continue the cycle.

Giardia Cyst

Trophozoite

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How Do Dogs, Cats, and People Become Infected?

People and pets rarely share each other’s Giardia.

People are typically infected with a human form of Giardia, dogs with a canine form, cats with a feline form, and cattle and sheep with a ruminant form. People are occasionally infected with a different form that is shared with animals. On rare occasions, dogs and cats have been found infected with the human form. Thus, there is little evidence for direct transmission from pet dogs and cats to people. However, the rare occurrence of the human forms in cats and dogs means that there may be a slight chance that they pose a risk as a source of human infection. To be able to distinguish the specific forms, a veterinarian is required to submit samples for specialized tests.

Symptoms of Infection with Giardia

In dogs and cats, infection with Giardia is usually asymptomatic. Some pets will, however, develop persistent diarrhea. There is usually no blood in the stool.

In people, infection with Giardia is also often asymptomatic. However, some people can develop acute, intermittent, or chronic non-bloody diarrhea. Other symptoms in people include abdominal cramping, nausea, vomiting, loss of appetite, and weight loss.

Prevention and Treatment

• Unlike for heartworm disease, there are no drugs that can be routinely given to a pet that will prevent infection.

• Dogs, cats, and people that have symptoms of the infection can be treated; however, there are situations where it is difficult to clear an animal of their infections.

• There are approved drugs for treating the infection in people. These drugs have not been approved for this specific use in dogs and cats, but these and similar drugs are used in them.

Risk Factors for Human Infection

• Accidentally swallowing Giardia cysts from surfaces contaminated with feces, such as bathroom fixtures, changing tables, diaper pails, or toys contaminated with feces.

• Drinking water from contaminated sources (e.g., lakes, streams, shallow [less than 50 feet] or poorly maintained wells).

• Swallowing recreational water contaminated with cysts. Recreational water includes water in swimming pools, water parks, hot tubs or spas, fountains, lakes, rivers, springs, ponds, or streams that can be contaminated with feces or sewage.

• Eating contaminated uncooked, fresh produce.

• Having contact with someone who is infected with Giardiasis.

• Changing diapers of children with Giardiasis

• Traveling to countries where Giardiasis is common and being exposed to the parasite as described above.

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Upper-Respiratory Infections in Cats

Yes, it’s true. Our feline friends can get colds, too. As is the case for humans, bacteria or viruses are to blame.

The bacteria or viruses that most commonly cause upper respiratory infections (URIs) in cats are:

• Feline herpesvirus type-1 (FHV-1), also known as feline viral rhinotracheitis (FVR).

• Feline calicvirus (FVC)

• Bordetella bronchiseptica (B. bronchiseptica)

• Chlamydophilia felis (C. felis)

• Mycoplasma spp. (bacteria) or a feline respiratory, such as FIV or FeLV, also contribute to issues with upper respiratory infections.

Bacteria and viruses are very contagious and are present in the saliva and discharge produced by their eyes and nose. Healthy cats can get infected when they come into direct contact with a sick cat. Cats with retroviruses are especially vulnerable to the contagions, both through direct contact and indirect contact with contaminated objects.

Unfortunately, even seemingly recovered cats can still be carriers of the aforementioned diseases and unknowingly pass it on to other cats. Mother cats can also act as carriers, passing infections on to their litters.

Cats that have contracted FVR are considered “chronic carriers”, meaning they will carry the virus for life and can become sick again in times of high stress such as moving, new housemates, babies, etc. About half of the cats infected with FVC will remain infected as carriers, sometimes for a few months after the symptoms cease, and in rare occasions, for life.

Symptoms of Feline Upper Respiratory Infections

Some of the common symptoms of an upper respiratory infection in cats are:

• sniffling

• sneezing

• clear to pus-like discharge from the eyes and/or the nose

• coughing

• lethargy

How long can Feline Upper Respiratory Infections last?

An infection typically lasts for 7 to 21 days. There is an incubation period, which is the time period from point of infection to when clinical signs become apparent, which spans 2 to 10 days. It is thought the incubation time is the time of highest contagion.

Diagnosing cats with a Feline Upper Respiratory Infection

The clinical signs and symptoms are typically apparent enough to make a diagnosis. However, diagnostic tests are required to determine the cause of the infection. Some of the tests your veterinarian may recommend are:

• A complete blood count (CBC) to rule out blood-related conditions.

• Chemistry tests to ensure your cat isn’t dehydrated or suffering from an electrolyte imbalance.

• Urine tests to screen for urinary tract infection and other disease, and to evaluate the ability of the kidneys to concentrate urine.

• Tests for feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV).

Your veterinarian may want to run additional tests for cats with chronic upper respiratory infections, such as radiographs to evaluate the lungs and sinuses, cultures of cells, and microscopic evaluation of discharge.

Treatment for Feline Upper Respiratory Infections

Your veterinarian will determine the best treatment for your cat, which may include specific prescriptions and possible hospitalization, depending on the severity of the situation.

For more mild infections, other suggests of treatment may include:

• Increase humidity within your house (such as a humidifier or short trips to a steamy bathroom several times a day)

• Offer food that is appetizing to your cat, such as canned food, to encourage eating.

• Clear the eyes and nose of discharge by wiping the eyes and nose with a moistened washcloth that can be properly washed and disinfected.

Prevention of Feline Upper Respiratory Infections

Vaccination can protect your cat from the most common causes of an upper respiratory infection (FVR and FVC).

Disinfection is another highly effective way of minimizing environmental exposure. In high to minimal risk situations, it is advisable to regularly disinfect shared items such as litter boxes, food bowls, and bedding.

Preventing direct contact between cats is the best way to ultimately avoid infection. If you are bringing home a new cat that has come from a breeder or a shelter, it is important to have them visit the veterinarian before introducing them to any cats you currently have in the home. Keep in mind that your new cat may not yet show symptoms, so limited exposure and diligence in cleaning and sanitizing is critical in the first 1 to 2 weeks after adoption.

How are humans affected by a Feline Upper Respiratory Infection?

Humans are at a low risk of contracting the diseases responsible for causing upper respiratory infections in felines. Most of these infectious agents are species-specific. Viruses such as B. bronchiseptica and conjunctivitis associated with C. felis can be a possible risk for people with lowered immunity. To prevent the chance of infection, wash your hands frequently.

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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Camphor poisoning in pets: the trouble with topical pain or arthritis rubs.

Have you ever had a sore spot on an arm or leg and rubbed a patch of Tiger Balm, only to have your pet get affectionate and lick you? Or maybe they lick your hand to get your attention before you've had time to wash your hands? This could be a serious issue, resulting in an immediate call to the Pet Poison Helpline.

Camphor is commonly found in topical pain or arthritis body rubs. Examples of some common trade names containing camphor include Carmex, Tiger Balm, Vicks VapoRub, Campho-Phenique, etc. Camphor is readily absorbed across the skin, and should never be applied to dogs or cats due to risks for poisoning. Clinical signs of camphor poisoning in pets include local skin irritation, nausea, vomiting, diarrhea, depression, seizures (in large amounts), and even rarely, death (from respiratory depression or seizures).

Poisonous to: Cats, Dogs

Level of toxicity: Generally mild to moderate

Common signs to watch for:

• Local skin irritation

• Nausea

• Vomiting

• Diarrhea

• Depression

• Seizures (in large amounts)

• Death (rarely, from respiratory depression or seizures)

Alternate names: topical, Carmex, Tiger Balm, Vicks, VapoRub, Campho-Phenique, Arthritis Rub

If you think your dog or cat were exposed to camphor, call your veterinarian or Pet Poison Helpline immediately for treatment advice.

24/7 ANIMAL POISON CONTROL CENTER
(855) 764-7661

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Whisker Fatigue in Cats

If you've never heard of whisker fatigue, don't worry. It's not necessarily a widely known condition. But for some cats, it does negatively impact daily life.

Why do cats have whiskers?

Cat whiskers are extraordinary sensing hairs that give them almost extrasensory powers. Despite their evolution, whiskers (tactile hairs or vibrissae), have remained as features on most mammals in some basic form.

For cats, whiskers are much more than facial adornments that add to their cuteness. Whiskers act as high-powered antennae that pull signals into their brain and nervous system. The ultra-sensitive sensory organs at the base of the whiskers, called proprioceptors, tell your cat a lot about their world. They provide your cat with information regarding their own orientation in space and the what and where of their environment. In these ways, whiskers help your cat move around furniture in a dark room, hunt fast-moving prey (by sensing changes in air currents) and help to determine if they can squeeze into that incredibly tight spot between the bookcase and the wall.

So what exactly is whisker fatigue?

While cats can voluntarily “turn on” the sensory focus of their whiskers exactly where they want, whisker receptors mostly respond to a cat’s autonomic system — the sympathetic and parasympathetic nerves that respond to the internal and external environment without conscious control (for example—pupils constricting in response to bright light).

You can think of whisker fatigue as an information overload that stresses out your cat. Because whisker hairs are so sensitive, every time your cat comes into contact with an object or detects movement, even a small change in air current or a slight brush against their face, messages are transmitted from those sensory organs at the base of their whiskers to their brain. That barrage of “messages” could stress out your cat, eventually causing what some people call whisker fatigue.

However, “fatigue” may not be the best description of the condition, since what your cat is feeling is probably more like distaste or aversion than soreness or actual fatigue. In fact, whisker stress is another term some people use for the condition.

Not all feline vets think whisker fatigue is a real condition or cause for concern. Dr. Cathy Lund of City Kitty, a feline-only veterinary practice in Providence, R.I, questions the validity of whisker fatigue. While a cat’s whiskers do serve as very sensitive tactile sensors, she does not believe contact between whiskers and objects causes stress in cats. That said, stress, for whatever reason, is a real issue of concern for cat owners and vets.

What causes whisker fatigue?

While your cat relies on their fetching facial antennae to navigate the world, they can’t tune out unnecessary messages the way we filter out background noise. They inadvertently finds stimulation in the most common and ever-present situations, like at their food or water bowl. If their whiskers touch the sides of the bowl every time they dips their head to sip or eat, this can cause whisker fatigue, the theory suggests.

Your cat’s behavior at their food and water bowl will tip you off that they are stressed. Some signs to watch for include:

• Pacing in front of the bowls

• Being reluctant to eat but appearing to be hungry

• Pawing at food and knocking it to the floor before eating

• Acting aggressive toward other animals around food

Of course these behaviors can also be related to potentially serious health conditions like dental disease, oral tumors, gastrointestinal diseases, behavioral problems and more, so if you have any concerns about your cat’s well-being, you should make an appointment with your veterinarian.

Many vets, regardless of their opinions on whisker fatigue, agree that cats often find eating out of a bowl unappealing in general and providing a flat surface for meals is preferable.

Whisker fatigue is not a disease (and is not caused by or related to any type of illness) and appears to manifest primarily with the repeated daily contact with food and water bowls. However, a cat who is stressed is not happy, and if they avoid eating and drinking, they might become malnourished and/or dehydrated.

How can whisker fatigue be prevented?

Luckily, preventing or stopping stress related to whisker fatigue at feeding time is as easy as replacing your cat’s food and water bowls. At meal time, provide a flat surface or a wide-enough bowl for cat food so that their whiskers don't touch the sides of the bowl. In a pinch, a paper plate can serve as a suitable food dish.

Most cats prefer a lip-less, large flowing water source, for drinking. Ideally, cat parents should provide an automatic, fresh water source, like a cat water fountain, which cats prefer to an icky, stale bowl of water that might as well be from an old tire.

Some cat parents believe another solution is to trim their cats’ whiskers, but this is a giant no-no. Trimming whiskers mutes their expression, dims their perceptions, and in general, discombobulates cats and annoys them.

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