Sensitivity of pathogens in community acquired pneumonia in patients with and without antibiotic pretreatment

	Patients without antbiotic pretreatment					Patients after antibotic pretreatment
		% of sensitive strains					% of sensitive strains
Pathogens	Abs.	AMO±	ERY	AZY±	3rd CEPH	Abs.	AMO	ERY	AZY	3rd CEPH
S. -pneumoniae	13	92.3	100.0	100,0	92.3	3	66.7	100.0	100.0	66.7
S. pyogenes	4	100.0	100.0	100,0	100.0	4	75.0	100.0	100.0	75.0
H. influenzae	26	88.5	0.0	100.0	100,0	10	80.0	0.0	100.0	100.0
Other Haemophilus sp.	21	90.5	00	1000	100.0	11	90.9	0.0	100.0	100.0
E. coli	5	60.0	0.0	0,0	100.0	1	100.0	0.0	0.0	100.0
Kl. pneumoniae	4	0.0	0.0	0,0	100.0	5	0.0	0.0	0.0	100.0
Other Enterobacteriacae	2	50.0	0.0	0,0	100.0	5	20.0	0.0	0.0	80.0
P. aeruginosa	3	0.0	0.0	0,0	0.0	3	0.0	0.0	0.0	0.0
Other non-fermenting bacteria	1	0.0	0.0	0,0	0.0	0	0.0	0.0	0.0	0.0
Enterococcus sp	1	100.0	0.0	0,0	0.0	0	0.0	0.0	0.0	0.0
S. aureus	11	9.1	45.5	456	72.7	4	0.0	75.0	75.0	100.0
Staph. coaq (−)	4	50.0	75.0	75.0	75.0	2	50.0	50.0	50.0	100.0
Total	95	69.5	26.3	75.8	89.5	48	54.2	22.9	66.7	87.5

* ± Total number of sensitive strains for amoxicillin and azythromycin significantly higher in patients without antibiotic pretreatment, p < 0.05