High HDL cholesterol has been associated with a reduced risk for heart attack, but how it actually reduced the risk remained unclear. It turns out that some mechanisms that raise HDL do not seem to lower the risk of heart attack.
MRSA (methicillin resistant staphylococcus aureus) is a type of staphylococcus bacteria (staph) that is resistant to beta-lactam antibiotics. MRSA is contagious and can cause life-threatening infection. MRSA isnât found in the natural environment (soil or water).
One type of staph infection that involves skin is called cellulitis and affects the skin's deeper layers. It is treatable with antibiotics. This type of infection is very common in the general population -- and more common and more severe in people with weak immune systems.