Cutaneous Pasteurella hemolytica infection

Cutaneous Pasteurella hemolytica infection is a type of bacterial infection affecting the skin, primarily caused by the bacterium Pasteurella hemolytica, now more commonly referred to as Mannheimia haemolytica. This condition is relatively rare in humans, with most cases reported in individuals who have close contact with livestock, as Mannheimia haemolytica is a well-known pathogen in animals, particularly sheep and cattle, where it can cause respiratory infections known as shipping fever.

Symptoms

The symptoms of cutaneous Pasteurella hemolytica infection can vary but typically include:

• Redness and swelling at the site of infection
• Pain or tenderness
• Possible discharge or pus
• Fever and general malaise in more severe cases

Transmission

Transmission to humans usually occurs through direct contact with the infected animals or their secretions. Breaks in the skin, such as cuts or abrasions, can serve as entry points for the bacteria. Although less common, there have also been reports of human infection following dog or cat bites, as these animals can carry Pasteurella species in their oral flora.

Diagnosis

Diagnosis of cutaneous Pasteurella hemolytica infection involves:

• Clinical examination and patient history, focusing on animal exposure
• Laboratory testing, including culture of samples from the infection site to identify the presence of Mannheimia haemolytica

Treatment

Treatment typically involves antibiotics to combat the bacterial infection. The choice of antibiotic may be guided by susceptibility testing of the isolated bacteria. In cases of severe infection, hospitalization and intravenous antibiotics may be necessary.

Prevention

Preventive measures include:

• Practicing good hygiene and wound care, especially in individuals with close contact with livestock
• Using protective clothing and equipment to minimize direct skin contact with animals
• Promptly cleaning and disinfecting any cuts or abrasions sustained while handling animals

See Also

• Bacterial skin infections
• Zoonotic diseases
• Antibiotic resistance

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