Positive bacterial finding have been determined in 1345 (68%) swabs with 1575 isolated bacterial species, from which 587 (37.3) were staphylococci: Staphylococcus aureus 460 (29.2%) isolations (173 methycillin resistant S. aureus ); S. epidermidis 79 (5.0%); S. haemolyticus 21 (1.3%); S. hominis 11 (0.7%); S. chromogenes and S. lugdunensis nine (0.6%); S. intermedius , S. lentus , S. sciuri and S. warneri all with seven (0.4%) isolations.