Organism

No. of strains

Constituent ratio (%)

Gram-positive bacteria

Staphylococcus aureus

18

6.04

Streptococcus pneumoniae

6

2.01

Streptococcus dysgalactiae

1

0.34

Gram-negative bacteria

Klebsiella pneumoniae

77

25.84

Pseudomonas aeruginosa

63

21.14

Acinetobacter baumanii

42

14.09

Escherichia coli

25

8.39

Stenotrophomonas maltophilia

21

7.04

Klebsiella spp

7

2.35

Serratia spp

6

2.01

Enterobacter cloacae

5

1.68

Pseudomonas spp

5

1.68

Acinetobacter spp

4

1.34

Proteus spp

4

1.34

Burkholderia spp

3

1.01

Providencia spp

3

1.01

Moraxella catarrhalis

2

0.67

Morganella spp

2

0.67

Citrobacter spp

1

0.34

Haemophilus influenzae

1

0.34

Actinobacillus

1

0.34

Achromobacter

1

0.34

Total

298