Gram-positive bacteria

Gram-negative bacteria

%

Staphylococcus aureus

19.0

Pseudomonas aeruginosa

15.5

Streptococcus sp.

13.75

Klebsiella sp.

8.5

Haemophilus influenzae

8.25

Acinetobacter calcoaceticus

8.0

Proteus sp.

7.5

Peptostreptococcus

7.0

Escherichia coli

7.0

Peptococcus sp.

5.5

Fusobacterium sp.

5.0

Bacteroides melaninogenicus

4.5

Enterobacter sp.

4.25

Bacteroides fragilis

4.0

Legionella sp.

2.0

Serratia sp.

1.5

Citrobacter sp.

0.75