Font Size
A
A
A

MRSA Infection (cont.)

MRSA Infection Causes

Plasmids, genetic elements that can be transferred from one bacterium to another, cause S. aureus to develop resistance to antibiotics. At least five types of genetic material (SCCmec genes I-V) have been identified. Hospital-acquired MRSA (HA-MRSA) usually have genes I-III while community-acquired MRSA (CA-MRSA) have genes IV-V. HA-MRSA is resistant to more antibiotics than CA-MRSA. These plasmids are strands of DNA, separate from the bacterial genome, which can self-replicate and frequently are responsible for the synthesis of compounds that cause antibiotic resistance in bacteria.

MRSA bacteria can be transmitted by direct (though skin and body fluids) and indirect contact (from towels, diapers, and toys) to uninfected people. Also, some individuals have MRSA on their body (on their skin or in their nose or throat) but show no symptoms of infection; these people are termed MRSA carriers (see above) and can transmit MRSA to others. Statistics show that CA-MRSA is the predominant MRSA type found in the population. Most carriers are best detected by culturing MRSA from nasal swabs.

Must Read Articles Related to MRSA Infection

Abscess
Abscess An abscess is has several causes and can appear on many parts of the body, such as the dental, vaginal, and rectal areas. In general, home remedies or cures are...learn more >>
Antibiotics
Antibiotics Antibiotics are prescribed to individuals to cure disease by killing bacteria. There are over 100 antibiotics. The main classes of antibiotics include penicilli...learn more >>
Cellulitis
Cellulitis Cellulitis is a bacterial infection of the skin and soft tissues that causes swelling, redness, tenderness and warmth. Treatment will involve antibiotics. Sever...learn more >>

Patient Comments & Reviews

The eMedicineHealth doctors ask about MRSA:

MRSA - Treatment

What was the treatment for your MRSA?

MRSA - Symptoms

What were the symptoms of your MRSA?

MRSA - Describe Your Experience

Please describe your experience with MRSA.





Read What Your Physician is Reading on Medscape

Staphylococcal Infections »

Staphylococcal infections are usually caused by the organism Staphylococcus aureus.

Read More on Medscape Reference »


Medical Dictionary