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Table 2 Percentage of isolation of different pathogens by quantitative and semi-quantitative ETSA cultures and by both methods

From: Evaluation of semi-quantitative compared to quantitative cultures of tracheal aspirates for the yield of culturable respiratory pathogens – a cross-sectional study

Organism Isolated By Quantitative Method
n (%)
By Semi-Quantitative Method
n (%)
By Both Method
n (%)
Acinetobacter species 22 (23.2) 23 (23.7) 22 (23.7)
Klebsiella pneumoniae 18 (19.0) 20 (21.0) 18 (19.4)
Pseudomonas aeruginosa 18 (19.0) 18 (18.6) 17 (18.3)
Staphylococcus aureus 18 (19.0) 17 (17.5) 17 (18.3)
Escherichia coli 7 (7.4) 7 (7.2) 7 (7.5)
Stenotrophomonas maltophilia 5 (5.3) 5 (5.2) 5 (5.4)
Serratia species 1 (1.1) 1 (1.0) 1 (1.1)
Streptococcus pneumoniae 2 (2.1) 2 (2.1) 2 (2.2)
Haemophilus influenzae 1 (1.1) 1 (1.0) 1 (1.1)
Molds 3 (3.2) 3 (3.1) 3 (3.2)
Total organisms isolated 95 97 93