Table 2. Bacterial Etiology Among Hospitalized Patients With Culture-positive Pneumonia.

	Source of Positive Culture, No. (%)
Bacteria	Respiratory	Blood	Both
Staphylococcus aureus	2631 (33.58)	1404 (22.24)	207 (44.52)
Methicillin sensitive	1488 (18.99)	881 (13.96)	120 (25.81)
Methicillin resistant	1118 (14.27)	502 (7.95)	85 (18.28)
Streptococcus pneumoniae	1127 (14.38)	2102 (33.3)	151 (32.47)
Pseudomonas aeruginosa	1334 (17.02)	218 (3.45)	36 (7.74)
Escherichia coli	501 (6.39)	747 (11.83)	17 (3.66)
Klebsiella pneumoniae	599 (7.64)	290 (4.59)	20 (4.3)
Haemophilus influenzae	317 (4.05)	124 (1.96)	8 (1.72)
Proteus mirabilis	194 (2.48)	100 (1.58)	1 (0.22)
Streptococcus agalactiae	31 (0.4)	170 (2.69)	1 (0.22)
Serratia marcescens	153 (1.95)	19 (0.3)	5 (1.08)
Stenotrophomonas (Xanthomonas) maltophilia	140 (1.79)	11 (0.17)	0 (0)