MRSA is an acronym for Methicillin resistant staphylococcus aureus.

It is a bacterium, which is responsible for the unmanageable infections in the human beings. It is also called as Oxacilin resistant Staphylococcus aureus or multidrug resistant Staphylococuus Aureus. MRSA is defined as a strain of Staphylococcus aureus, which is resistant to a great group of antibiotics known as beta-lactums. It includes Cephalosporin and Penicillin.

MRSA is frequently categorized into Health care associated MRSA and Community associated MRSA even though the differentiation is composite. Some defined that CA-MRSA by the genetic characteristics of the bacteria itself. Some defined CA-MRSA by the criteria, which is related to patients who are suffering from infection caused by MRSA. In the late 1990s, CA-MRSA symptoms were reported first. It is because of deficiency of vulnerability to the health care setting. Later after many years it was known that CA-MRSA infections were caused due to the forms of MRSA, which differed from the better examined healthcare associated strains.

The recent CA-MRSA soon became the most usual cause of skin infections among the people who stays in urban areas of United States. These infections were also common in Soldiers, athletes and Jail detainees. MRSA is an immune version of the common bacteria Staphylococcus Aureus. It has developed a power to survive treatment with Methicillin, Nafcillin, Dicloxacillin, oxacillin and beta lactum antibiotics. MRSA is particularly difficult in the infections, which are hospital associated.

The patients in hospitals who were suffering with invasive devices, weak immune systems and open wounds are prone to infection rather than the people who have good health conditions. The staff of the hospital that does not follow proper sanitary facilities may transfer the bacteria one patient to another. People who come to visit the MRSA infected patients are advised to follow the isolation protocol of the hospital by using the provided gowns, masks if necessary and gloves. Such people who will not follow the protocols of the hospitals are open to spread the bacteria to bathrooms, elevators and Cafeteria.

In the year 1961, MRSA was discovered in the United Kingdom. In the year 1981, in the United States, MRSA made its great appearance among endovenous drug users. The important sources to identify MRSA are reference laboratories and diagnostic microbiology laboratories. New speedy techniques for the characterization and identification of MRSA infections were developed. These techniques are based on quantitative PCR and real-time PCR.