We all love our pets, dogs and cats, don't we? They are like members of our family. But what we don't think about in the midst of this love is that there may be various types of bacteria in their mouths that can be harmful to us. One such type of bacteria is Capnocytophaga, which can cause serious infections, especially in people with weakened immune systems. Don't worry, if we are fully aware of this, we can stay safe from this risk without any problems.
What is this Capnocytophaga?
Simply put, Capnocytophaga is a type of bacteria that normally lives in the mouths of animals like dogs and cats , and sometimes even humans. One of the unique features of this bacteria is that it can live in both oxygen- rich and non-oxygen-rich environments. In medical terms, we call this ``facultative anaerobic''.
There are several strains of this Capnocytophaga bacteria. While some strains are more common in the mouths of humans, others are more common in the mouths of dogs and cats. This bacteria does not harm animals and does not show any symptoms. Therefore, this bacteria can be present in their mouths even when they are healthy.
How does this get to us?
The main way we can get this is through an animal bite or scratch. That means if your pet, a dog or a cat on the street bites or scratches you, this bacteria can enter your body. Not only that, but if the animal's saliva comes into direct contact with a cut or scratch on your skin, it can also be transmitted through it. Imagine that you have a small scratch on your hand, and when you pet the dog with the same hand, if its saliva gets on that wound, it can become infected .
Does every dog have this bacteria in their mouth?
No. Not all dogs have this in their mouths. But a recent study found that 69.7% of dogs and 54.8% of cats tested had this bacteria in their mouths. That means that about seven out of ten dogs could have it in their mouths. Since they are not harmed, we have no way of knowing unless we test them.
Therefore, the safest thing to do is to assume that any dog or cat could be a carrier of this bacteria and be careful accordingly. This does not mean that you should abandon your pets. It is best to take a few extra precautions, especially if you have a weakened immune system.
What are the symptoms of a Capnocytophaga infection?
The symptoms of a Capnocytophaga infection are very similar to those of a common bacterial infection. If an infection occurs, symptoms can appear between 1 and 14 days after exposure.
See the table below for what these symptoms are.
| Symptom category | Symptoms that indicate |
|---|---|
| Injury-related symptoms | Redness, swelling, blistering, pus drainage, or extreme pain around the wound. |
| General physical characteristics | Fever, headache, muscle or joint pain, vomiting, diarrhea, stomach cramps . |
| Symptoms of serious infections (rare) | Confusion, difficulty breathing, chest pain. These can be signs of serious conditions such as Sepsis (blood poisoning), Meningitis (inflammation of the brain), or Gangrene (tissue death). |
How do you know for sure if this is there?
The best way to know if you have this infection is to get a medical test. Usually, a sample of pus from a wound is cultured in a laboratory to see if this bacteria is present. However, because this bacteria requires special conditions to grow and takes time to grow, it can sometimes be difficult to accurately identify. The Polymerase Chain Reaction (PCR) test is another accurate way to look for the genetic material of this bacteria.
Who is most at risk?
Although Capnocytophaga infections are not common in humans, some people are at higher risk of developing serious complications. These are people who are called immunocompromised .
- Cancer patients (especially those undergoing chemotherapy)
- HIV/ AIDS infected people
- People with uncontrolled diabetes
- People who have had their spleen surgically removed
- People who drink alcohol excessively
- Pregnant mothers
- Elderly people
If someone like this gets an infection, it can quickly become serious and cause severe complications like heart attack and kidney failure.
The most important thing is that if you are bitten by an animal, you should also think about rabies . Therefore, ask the owner about the animal's vaccination details. If it is an animal on the street, it is essential to seek medical advice immediately and get the rabies vaccine.
What are the treatment and prevention methods?
Because Capnocytophaga is a bacterial infection, the main treatment is antibiotics . Antibiotics such as Clindamycin are commonly used. Your doctor will determine the best treatment for you.
But isn't it more important to prevent the disease from developing than to treat it? Here are some simple things you can do to do that.
| Prevention method | Description |
|---|---|
| Hand washing | Wash your hands thoroughly with soap and water after touching any animal, especially an unfamiliar one. If you have been exposed to the animal's saliva, wash the area thoroughly. |
| Preventing bites | Do not approach unfamiliar animals. Do not disturb them while they are eating, sleeping, or with their young. |
| Cleaning wounds immediately | If you are bitten or scratched by an animal, immediately wash the wound thoroughly with soap and running water for several minutes. Apply antibiotic lotion if available. |
| Seeking medical advice | If the wound is deep and the bleeding cannot be stopped, see a doctor immediately. It is best to go to the Emergency Department (ETU) of the nearest hospital. |
| Being alert to signs of infection | If the wound becomes red, swollen, or painful, or if you develop a fever, see a doctor without delay . |
If you belong to one of the risk groups mentioned above, that is, someone with a weakened immune system, it is very important to talk to your doctor about the best ways to protect yourself when interacting with pets.
Take-Home Message
- Capnocytophaga is a bacteria that is normally found in the mouths of dogs and cats, but can be dangerous to humans (especially those with weakened immune systems).
- It can be transmitted through an animal bite or scratch, or through saliva coming into contact with a wound.
- If you are bitten or scratched by an animal, immediately wash the area thoroughly with soap and water.
- If the wound becomes red, swollen, painful, or develops symptoms such as fever, see your doctor without delay.
- If you have a weakened immune system, be extra careful when interacting with pets. There's no need to panic, the most important thing is to be aware.
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