14 Jan

Bunch of Grapes

Staphylococcus is derived from the Greek language meaning “bunch of grapes.”  Staphylococci are gram-positive spherical bacteria that divide in more than one plane to form irregular clusters of cells.  In the present edition of Bergey’s manual, the staphylococci are grouped in Family I.  Micrococcaceae with three other genera.  There are nineteen species of staphylococci listed in Bergey’s manual with the most medically important being Staphylococcus Aureus, Staphylococcus epidermidis, and Staphylococcus saprophyticus.  What separates S. aureus from other the other species is that it has the ability to coaggulate plasma which is correlated with pathogenicity.  The other two species do cause infection of the cerebrospinal fluid, prosthetic joints, and vascular grafts.