Staphylococcal infection

Staphylococcal infection is a type of infection caused by the Staphylococcus bacteria. This genus of bacteria is known for its ability to cause a variety of diseases, ranging from minor skin infections to severe systemic illnesses. One hallmark of staphylococcal infection is the formation of abscesses.

Staphylococcus aureus 01

Staphylococcus aureus Gram stain

Staphylococcus: Overview and Types

Staphylococcus is a genus of Gram-positive, non-spore-forming bacteria that are usually present as clusters resembling a bunch of grapes, a feature that gives the group its name. Notable species include S. aureus, S. epidermidis, and S. saprophyticus. S. aureus is particularly virulent and is often implicated in more serious staphylococcal infections.

Pathophysiology of Staphylococcal Infections

Staphylococci can colonize various parts of the human body, particularly the skin and mucous membranes. Infections occur when these bacteria enter the body, often through a break in the skin, and evade the immune system. The bacteria may produce toxins and enzymes that cause tissue damage and facilitate the formation of abscesses.

Clinical Presentation

Clinical presentation varies with the type and location of the infection. Skin and soft tissue infections typically present with symptoms like redness, swelling, and pain, often accompanied by the formation of abscesses. Systemic infections can lead to severe illnesses such as septicemia, endocarditis, and pneumonia.

Diagnosis of staphylococcal infections primarily involves clinical assessment, along with laboratory testing such as culture and gram stain of the suspected site of infection. Advanced techniques like polymerase chain reaction (PCR) and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry may also be employed.

Treatment of staphylococcal infections often involves antibiotics, the choice of which depends on the sensitivity of the infecting strain. Staphylococcal species are notorious for their ability to develop antibiotic resistance, necessitating careful selection and use of antibiotics. For abscesses, surgical drainage is usually required.

Prevention and Control

Prevention of staphylococcal infections includes maintaining good personal hygiene, proper wound care, and effective sterilization in healthcare settings. Contact precautions are also important in controlling the spread of the bacteria, especially in hospital environments.

See also

• Methicillin-resistant Staphylococcus aureus
• Staphylococcus aureus

References

Staphylococcal infection Resources
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