MRSA detailed...

a detialed page on MRSA - including pictures

HideShow resource information
  • Created by: Engila
  • Created on: 23-10-11 13:45
Preview of MRSA detailed...

First 448 words of the document:

MRSA is short for
staphylococcus aureus. Which it
is called due to: In the early
1960s, a new type of penicillin
antibiotic called methicillin was
developed, to fight against
these resistant bacteria as it
had developed ß-lactamase to
degrade the antibacterial
properties of Penicillin.
Methicillin was not degraded
by ß-lactamase and so could be
used to treat infections due to
ß-lactamase-producing strains
of Staphylococcus aureus.
Subsequently, methicillin was
replaced by newer and better
penicillin-type antibiotics (such
as flucloxacillin) that were also not affected by ß-lactamase. Nonetheless, after a period of time these bacterial
became untreatable via methods such as methicillin as their ß-lactamase once again mutated to become resilient and
degraded the methicillin and flucloxacillin, therefore being named MRSA (methicillin-resistant staphylococcus aureus).
The second part staphylococcus aureus is the group of bacteria's which it is within, like its ancestors which it evolved
Garden-variety staphs are common bacteria that can live on our bodies. Plenty of healthy people carry staph without
being infected by it. In fact, 25%-30% of us have staph bacteria in our noses; and many more on our skin. It is not
unordinary to have staph on our bodies, it is rather usual. It poses no threat when on the skin or outside the actual
body, nevertheless if through a cut or having a low immune system (i.e. old, ill, after operation)-the staph gets within
your body can be a threat. But as staph is just a type of bacteria can be removed through the help of antibiotics; yet
there are ones like MRSA which are resistant to normal antibiotics (.i.e. the ß-lactamase has gained properties which
degrade the antibacterial properties of these antibiotics.) Therefore, if MRSA was to breed inside a healthy body
over a short period of time it
would averagely create
normal staph infections;
however over-time if
untreated can cause very
deep and serious infections.
MRSA can sometimes grow
from a small, contained
infection to one that involves
internal organs or important
systems in the body --
including the bones, joints,
heart valves, lungs, and
bloodstream. The vast
majority of these serious
infections are linked to health
care exposure. Recent reports
have found nearly 19,000
MRSA deaths in a single year.
Hospitals, where viruses and
infections abound, have been singled out as a prime location for contracting MRSA. But hospitals are working to

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Preventative measures by health care staff include good hand hygiene and wearing gloves. It's
paying off -- MRSA infections are down in hospital intensive care units.
But MRSA is also showing up in
healthy people who have not
been living in the hospital. This
type of MRSA is called
community-associated MRSA, or
CA-MRSA. The CDC reports that in
2007, 14% of people with MRSA
infections had CA-MRSA. Studies
have shown that rates of
CA-MRSA infection are growing
fast.…read more


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all resources »