Table 1. Bacterial isolates identified in Shanghai paediatric bacterial keratitis cases.

Bacterial culture	2005–2007	2008–2010	Total
	n (% of positive cultures)	n (% of positive cultures)	n (% of positive culture)
Gram-positive isolatesa	23	25	48
Staphylococcus epidermidis	11 (40.7%)	12 (37.5%)	23 (39.0%)
S. aureus	3 (11.1%)	Not found	3 (5.1%)
S. auricularis	Not found	2 (6.3%)	3 (5.1%)
S. warneri	1 (3.7%)	1 (3.1%)	2 (3.4%)
S. saprophyticus	Not found	2 (6.3%)	2 (3.4%)
Streptococcus pneumoniae	5 (18.5)	6 (18.8%)	11 (18.6%)
Micrococcus	1 (3.7%)	Not found	1 (1.7%)
Corynebacterium species	1 (3.7%)	Not found	1 (1.7%)
Bacillus	1 (3.7%)	2 (6.3%)	3 (5.1%)
Gram-negative isolatesa	4	7	11
Pseudomonas aeruginosa	2 (7.4%)	4 (12.5%)	6 (10.2%)
Neisseria species	1 (3.7%)	Not found	1 (1.7%)
Enterobacter species	Not found	1 (3.1%)	1 (1.7%)
Aeromonas hydrophila group	1 (3.7%)	Not found	1 (1.7%)
Acinetobacter lwoffii	Not found	1 (3.1%)	1 (1.7%)
Shigella sonnei	Not found	1 (3.1%)	1 (1.7%)
Positive cultures	27	32	59
Corneal cultures	37	43	80

^aχ²-test and Fisher's exact test were performed to evaluate the proportion of bacterial isolates between two 3-year study periods, P>0.05.