Is Capnocytophaga oxidase positive?

Recently, a novel Capnocytophaga species, C. canis, was isolated from the oral cavities of healthy dogs. It is reportedly oxidase-negative and therefore considered avirulent in humans.

Is Capnocytophaga gram negative?

Capnocytophaga canimorsus (dysgonic fermenter-2 [DF-2]) is a fastidious, gram-negative, opportunistic pathogen that can cause serious multiorgan disease in humans. The organism is found worldwide. Studies suggest that it is part of the normal gingival flora of cats and dogs. More than 100 cases of infection due to C.

Which antibiotics treat Capnocytophaga?

In general, many antibiotics, including penicillins, clindamycin, macrolides, and quinolones, are effective in treating Capnocytophaga infections (6, 10, 11, 21).

How is Capnocytophaga diagnosed?

Doctors diagnose Capnocytophaga canimorsus by detecting it in the blood by growing the bacterium in cultures performed in a microbiology laboratory. Blood cultures may detect most bacteria (“become positive”) within 1 to 2 days of incubating the blood in the lab.

How is Capnocytophaga treated?

Capnocytophaga infection can be treated with prescription medicine called antibiotics. Antibiotics kill bacterial germs like Capnocytophaga. It is important to call your doctor if you have been bitten by a dog or cat or believe that you might be infected with Capnocytophaga germs.

How do you know if you have Capnocytophaga Canimorsus?

People who are infected with Capnocytophaga can have a range of signs and symptoms such as: Blisters around the bite wound within hours of the bite. Redness, swelling, draining pus, or pain at the bite wound. Fever.

How do you treat Capnocytophaga?

What are the symptoms of Capnocytophaga?

People who are infected with Capnocytophaga can have a range of signs and symptoms such as:

• Blisters around the bite wound within hours of the bite.
• Redness, swelling, draining pus, or pain at the bite wound.
• Fever.
• Diarrhea and/or stomach pain.
• Vomiting.
• Headache and/or confusion.
• Muscle or joint pain.

How do you stop Capnocytophaga?

How can Capnocytophaga canimorsus infection be prevented? Capnocytophaga canimorsus infection can be prevented by avoiding exposure to dog or cat saliva. During Westgate Pet Clinic’s puppy and kitten classes, clients are taught that their pets should never be allowed to nip, bite, or scratch them, even in play.

Should I worry about Capnocytophaga?

Should You Worry About Capnocytophaga? Despite the dire mortality rate, capnocytophaga is extremely rare. It also isn’t new. These bacteria have been around for a long time, and while recent cases may have drawn attention to it, that doesn’t mean you need to panic.

What are symptoms of Capnocytophaga?

What are the physical characteristics of Capnocytophaga spp?

Morphologically, Capnocytophaga spp. appear as gram-negative medium-to-long rods with tapered or spindle-shaped ends. The major phenotypic characteristics of C. canimorsus include positive test results for oxidase, catalase, arginine dihydrolase, and o -nitrophenyl-β-d-galactopyranoside and negative reactions for urease, nitrates, and indole.

How do people get infected with Capnocytophaga?

Many Capnocytophaga germs are normal bacteria commonly found in the mouths of people, dogs, and cats. These germs sometimes cause opportunistic infections, which means under the right conditions they can cause an infection, such as in a person with a weakened immune system.

What kind of bacterium is Capnocytophaga canimorsus?

Capnocytophaga canimorsus is a fastidious, slow-growing, Gram-negative rod of the genus Capnocytophaga. It is a commensal bacterium in the normal gingival flora of canine and feline species.

What kind of agar does Capnocytophaga need to grow?

They are facultatively anaerobic and require enrichment with CO2 (5-10%) for optimum growth (capnophilic). The organisms grow best at 35 to 37 °C on either blood or chocolate agar. They do not grow on MacConkey agar.