comparative Essay
1201 words
1201 words

Science in the News: MRSA During the year 1961, British scientists discovered a superbug now known as MRSA. MRSA stands for Methicillin-resistant Staphylococcus aureus, and is a strain of staph bacteria that evolved, becoming resistant to antibiotics commonly used to treat these type of infections. MRSA and (methicillin-susceptible) Staphylococcus aureus infections share the same general characteristics. The bacteria is a gram-positive coccus usually forming in clusters. MRSA is nonmotile (incapable of movement), non-spore forming, catalase:positive, oxidase:negative, and facultatively anaerobic. Staphylococcus aureus best grows in hot environments. Temperatures of 35 °C (or 95°F) are ideal for MRSA to grow. MRSA is most commonly found in …show more content…

In this essay, the author

  • Explains that mrsa stands for methicillin-resistant staphylococcus aureus, a strain of staph bacteria that evolved, becoming resistant to antibiotics commonly used to treat these types of infections.
  • Explains that antibiotics, including misuse and overuse, have created natural bacterial evolution by availing the microbes to become resistant to drugs designed to fight these infections.
  • Explains that hospital-associated mrsa can be transmitted by skin to skin contact, or touching contaminated objects, making the ill residents of hospitals extremely susceptible for infection.
  • Explains that mrsa is a common skin bacteria that can become dangerous and fatal if not treated properly. antibiotics are commonly used to treat it, including clindamycin, vancomycin and erythromycin.
  • Recommends keeping hands clean, using alcohol-based hand sanitizers to disinfect hands, keeping cuts and scraps clean and covered with a bandage until healed.

In the 1940’s and throughout the 1950’s, S. aureus developed resistance to penicillin. Methicillin, a form of penicillin, was introduced to fix the penicillin-resistance. Methicillin was one of most common types of antibiotics used to treat staph infections; but, in 1961, British scientists identified the first strains of Staphylococcus aureus bacteria that resisted methicillin. This was the birth of MRSA. The first reported human case of MRSA in the States came in 1968. Today new bacteria has developed that can now resist drugs, such as methicillin and most cognate antibiotics. MRSA is authentically resistant to an entire class of penicillin-like antibiotics, which are called beta-lactams. MRSA produces enzymes called beta lactamase. These enzymes cleave the beta lactam ring located inside the penicillin; one enzyme specific to penicillin is penicillinase. This class of antibiotics included penicillin, amoxicillin, oxacillin, methicillin, and others. The National Institute of Allergy and Infectious Diseases states to diagnose MRSA, a sample is obtained from the infection site and sent to a microbiology …show more content…

One study estimated that approximately 20 percent of patients with serious MRSA infections died; about 86 percent of these infections were acquired in the hospital . MRSA can be transmitted either by skin to skin contact, or touching contaminated objects; making the ill (weakened immune system) residents of hospitals extremely susceptible for infection. In hospitals, becoming susceptible to MRSA is usually caused by being hospitalized for a prolonged period of time, exposure to intravenous catheters, having a surgical wound or IV, surgical procedures, other patients or healthcare workers who are colonized with MRSA, and contact with devices found in a hospital setting. Some signs and symptoms associated with HA-MRSA skin infections include, but not limited to, red bumps or mild swelling that may ooze pus. HA-MRSA infected patients are usually treated with intravenous medication until their symptoms improve. In many cases it takes up to 6-8 weeks after release from the hospital for antibiotics to

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