Monday, December 16, 2013

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MRSA: 65% of infections are of Community origin - PLoS ONE | Health Blog
This meta-analysis focused on the United States maternity allowance on the evolution of S. aureus resistant to methicillin (MRSA) is the first to provide large clear trends, in particular the spread "community" outside health facilities or nosocomial maternity allowance infections. This large study, conducted by researchers at the University of Chicago and published in the January 4 PLoS ONE reveals, in particular, a dramatic increase in infections over the past two decades, with endemic levels MRSA in some regions unprecedented earlier in children than in adults.
Staphylococcus aureus is the most common cause of skin and soft tissue infection in humans cause. If strains of S. aureus resistant to methicillin (MRSA) that emerged in the 1960s presented a threat to public health rather limited until the 1990s, then they began to spread out care facilities (nosocomial infections) but within communities. MRSA infections cause serious and sometimes deadly infections even in healthy people. Based on numerous studies monocentrics the authors show the increase of MRSA infections outside health care centers over the past two decades in particular from the 2000s, an increase that began to stabilize in late 2000s except for pediatric cases peaked earlier.
The curve of propagation of these infections has been established community MRSA: The infection rate increases as a non-linear function versus time. When only a small proportion of the community is infected, the growth rate remains low. After a certain period of time, beyond a number maternity allowance of infections circulating in the population, the number of contacts between susceptible individuals and infected people increases then it is a fast growing infections. Finally, growth slows to an endemic level (see diagram below cons).
65% of MRSA infections are community: Overall, today (United States) infections in community-associated MRSA exceeded nosocomial infections (in institutions) and represent 65% of all MRSA infections . Community MRSA infections also seem to have reached a plateau around 60-70% of all MRSA infections maternity allowance in children from the mid-1990s, but this proportion is still rising among adults in 2010.
These results contrast with those of the U.S. health authorities, while the CDC, for example, notes that MRSA infections are diagnosed clinically severe mostly in hospitalized patients and the incidence of nosocomial MRSA infections decreased steadily over the period 2004-2008. maternity allowance However, in this study, the authors found that the incidence of MRSA community has increased significantly among adults over the same period. Results that are closer to those efforts maternity allowance against hospital infections in the United States and in many countries while the same infections of Community origin remain largely underestimated.
Source: PLoS ONE 8 (1): e52722. doi: 10.1371/journal.pone.0052722 January 2, 2013 Epidemics of Community-Associated Methicillin-Resistant Staphylococcus aureus in the United States: A Meta-Analysis (Thumbnail Staphylococcus aureus CDC)
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