MRSA was first discovered in 1961. It belongs to the large group of bacteria known as staphylococci. MRSA is defined as the bacterium which is resistant to penicillin and standard penicillin-related antibiotics. The resistance of MRSA to methicillin is due to a penicillin-binding protein known as methicillin resistant gene (mecA).
MRSA usually causes the same spectrum of diseases as Staphlococcus Aureus but the only difference is their resistance to treatment. The most common infections seen are skin infections. The common symptoms are erythema, warmth, pain, swollen and tender skin lesions, etc. the skin infections commonly seen are cellulitis, carbuncles, furuncles, folliculitis, sty, abscesses and impetigo. MRSA infections can spread throughout the body and affect internal organs. This can result in more serious symptoms like low BP, fever, headache, joint pain and shortness of breath (Understanding MRSA (Methicillin resistant Staphylococcus aureus)).
The main mode of transmission of MRSA is physical contact. This means that MRSA can be transmitted from person to person contact, i.e. from people who are infected or colonized by MRSA. It can also be transmitted from objects with MRSA like tables, door handles, towels, floor and instruments or apparatus which has been used by the person with MRSA infection or colonization.
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