Methicillin Resistant Staphylococcus Aureus (MRSA): Difference between revisions
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===Description=== | ===Description=== | ||
<i>Staphylococcus aureus</i> is a Gram-positive, non-spore forming, nonmotile, cocci bacterium that colonizes in yellow clusters. This facultative anaerobe is considered natural flora in 20-30% of humans, living in the anterior nares and on the skin and was first isolated in the 1890’s from the pus from a surgical abscess in a knee joint. <i>S. aureus</i> is the most common type of staphylococci to cause infections because of its ability to evade the immune system and many antibiotics. These “Staph infections” can cause bacteremia, endocarditis, soft tissue infections, pneumonia, bone and joint infections, CNS, toxic shock syndrome, and even food poisoning. The most notorious strain of <i>staphylococcus aureus</i> is the methicillin resistant strain, commonly known for causing mild to severe skin infections resulting in death if not treated promptly. The most common place to contract Methicillin Resistant Staphylococcus aureus infection is typically in a hospital, but community outbreaks during the past decade have been widely observed. | |||
Revision as of 22:48, 22 July 2013
Etiology/Bacteriology
Taxonomy
| Domain = Bacteria | Phylum = Firmicutes | Class = Bacilli | Order = Bacillales | Family = Staphylococcaceae | Genus = Staphylococcus | species = S. aureus
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NCBI: Taxonomy Genome: Staphylococcus aureus |
Description
Staphylococcus aureus is a Gram-positive, non-spore forming, nonmotile, cocci bacterium that colonizes in yellow clusters. This facultative anaerobe is considered natural flora in 20-30% of humans, living in the anterior nares and on the skin and was first isolated in the 1890’s from the pus from a surgical abscess in a knee joint. S. aureus is the most common type of staphylococci to cause infections because of its ability to evade the immune system and many antibiotics. These “Staph infections” can cause bacteremia, endocarditis, soft tissue infections, pneumonia, bone and joint infections, CNS, toxic shock syndrome, and even food poisoning. The most notorious strain of staphylococcus aureus is the methicillin resistant strain, commonly known for causing mild to severe skin infections resulting in death if not treated promptly. The most common place to contract Methicillin Resistant Staphylococcus aureus infection is typically in a hospital, but community outbreaks during the past decade have been widely observed.
Pathogenesis
Transmission
Infectious dose, incubation, and colonization
Epidemiology
Virulence factors
Clinical features
Symptoms
Morbidity and Mortality
Diagnosis
Treatment
Prevention
Immune Response
Host Response
Bacterial Evasion
References
Created by Dehra McGuire, student of Tyrrell Conway at the University of Oklahoma.
