Spectrum and Sensitivity of Bacterial Keratitis Isolates in Auckland

Table 1

Prevalence of bacteria isolated in corneal scrape from severe cases of keratitis in Auckland Hospital in New Zealand (2013-2014) compared with results at the same site in 1999–2001.

Organism	Positive cultures (% of total); (2013-2014)	Positive cultures (% of total); (1999–2001) [10]	Statistical comparison between two time periods ( value)
Gram-positive cocci	53 (59.5)	N/A
Coagulase-negative Staphylococcus	2 (2.3)	20 (26.7)	0.00001
Staphylococcus aureus	14 (15.7)	7 (9.3)	0.17
Staphylococcus epidermidis	8 (8.9)	14 (18.7)	0.10
Streptococcus pneumoniae	10 (11.2)	11 (14.7)	0.64
Others	19 (21.3)	N/A
Gram-positive bacilli	19 (21.3)	N/A
Propionibacterium species	3 (3.4)	17 (22.7)	0.0001
Corynebacterium species	15 (16.9)	6 (8)	0.10
Others	1 (1.1)	N/A
Gram-negative bacilli	53 (59.5)	N/A
Pseudomonas aeruginosa	19 (21.3)	7 (9.3)	0.05
Moraxella species	16 (18)	6 (8)	0.06
Serratia marcescens	5 (5.6)	3 (4)	0.72
Others	12 (13.5)	N/A
Other bacteria	2 (2.2)	N/A
Microbacterium species	1 (1.1)	N/A
Aggregatibacter aphrophilus	1 (1.1)	N/A
Polymicrobial infection	29 (32.5)	25 (33.3)	1.00
Positive culture	89/154 scrapes	75/105 scrapes	—

Streptococcus mitis (4), Staphylococcus capitis (3), Staphylococcus warneri (3), Streptococcus Lancefield (3), Staphylococcus haemolyticus (1), Parvimonas micra (1), Streptococcus pyogenes (1), methicillin-resistant Staphylococcus aureus (1), flucloxacillin-resistant Staphylococcus aureus (1), and Staphylococcus lugdunensis (1).
Corynebacterium macginleyi (9), Corynebacterium pseudodiphtheriticum (2), Corynebacterium jeikeium (1), and other Corynebacterium species (3).
Nocardia veterana (1).
Moraxella lacunata (8), Moraxella nonliquefaciens (6), and other Moraxella species (2).
Haemophilus influenza (4), Klebsiella oxytoca (2), Shewanella putrefaciens (1), Elizabethkingia meningoseptica (1), Acinetobacter baumannii complex (1), Stenotrophomonas maltophilia (1), Proteus mirabilis (1), and Morganella morganii (1).
Percentage sum was greater than 100% because of polymicrobial infections; N/A = not available.