- Review
Geographic variations in microbial keratitis: an analysis of the peer-reviewed literature
Bacterial isolates by location
| Location of study | No of isolates (percentage of total isolates from that location) | ||||||
| Gram-positive bacteria | Gram-negative bacteria | ||||||
| Any | Staphylococci | Streptococci | Other | Any | Pseudomonas | Other | |
| Africa | |||||||
| Ghana | 17 (11.3) | 4 (2.7) | 8 (5.3) | 5 (3.3) | 21 (14.0) | 21 (14.0) | 0 (0) |
| Accra, Ghana | 34 (26.2) | 18 (13.8) | 11 (8.5) | 5 (3.8) | 29 (22.3) | 17 (13.1) | 12 (9.2) |
| Indian subcontinent | |||||||
| Nepal | 136 (38.0) | 102 (28.5) | 31 (8.7) | 3 (0.8) | 21 (5.9) | 18 (5.0) | 3 (0.8) |
| Chittagong, Bangladesh | 27 (21.3) | 2 (1.6) | 23 (18.1) | 2 (1.6) | 39 (30.7) | 34 (26.8) | 5 (3.9) |
| Tamil Nadu, India | 178 (33.1) | 63 (11.7) | 110 (20.4) | 5 (0.9) | 57 (10.6) | 35 (6.5) | 22 (4.1) |
| West Bengal, India | 214 (23.1) | 174 (18.8) | 28 (3.0) | 12 (1.3) | 84 (9.1) | 63 (6.8) | 21 (2.3) |
| New Delhi, India | 35 (53.8) | 28 (43.1) | 2 (3.1) | 5 (7.7) | 17 (26.2) | 10 (15.4) | 7 (10.8) |
| Madurai, India | 132 (40.6) | 26 (8.0) | 76 (23.4) | 30 (9.2) | 35 (10.8) | 24 (7.4) | 11 (3.4) |
| Hyderabad, India | 198 (50.9) | 92 (23.7) | 60 (15.4) | 46 (11.8) | 45 (11.6) | 27 (6.9) | 18 (4.6) |
| Tamil Nadu, India | 814 (34.0) | 259 (10.8) | 492 (20.6) | 63 (2.6) | 325 (13.6) | 236 (9.9) | 89 (3.7) |
| Hyderabad, India | 80 (67.2) | 43 (36.1) | 27 (22.7) | 0 (0) | 13 (10.9) | 6 (5.0) | 7 (5.9) |
| Delhi, India | 223 (30.6) | 200 (27.4) | 10 (1.4) | 13 (1.8) | 152 (20.9) | 88 (12.1) | 64 (8.8) |
| Riyadh, Saudi Arabia | 130 (73.9) | 75 (42.6) | 26 (14.8) | 29 (16.5) | 45 (25.6) | 16 (9.1) | 29 (16.5) |
| Baghdad, Iraq | 88 (37.3) | 70 (29.7) | 15 (6.4) | 3 (1.3) | 74 (31.4) | 68 (28.8) | 6 (2.5) |
| South America | |||||||
| Asuncion, Paraquay | 278 (69.0) | 210 (52.1) | 42 (10.4) | 226 (56.1) | 132 (32.8) | 46 (11.4) | 96 (23.8) |
| Far East | |||||||
| Taipei, Taiwan | 67 (26.6) | 21 (8.3) | 21 (8.3) | 25 (9.9) | 120 (47.6) | 95 (37.7) | 25 (9.9) |
| Taipei, Taiwan | 57 (35.0) | 39 (23.9) | 12 (7.4) | 6 (3.7) | 106 (65.0) | 56 (34.4) | 50 (30.7) |
| Singapore | Unspecified | 4 (5.0) | 4 (5.0) | Unspecified | 41 (51.3) | 23 (28.8) | 18 (22.5) |
| Singapore | 9 (16.4) | 5 (9.1) | 4 (7.3) | 0 (0.0) | 42 (76.4) | 23 (41.8) | 19 (34.5) |
| Hong Kong | 37 (41.1) | 9 (10.0) | 3 (3.3) | 25 (27.8) | 42 (46.7) | 28 (31.1) | 14 (15.6) |
| Bangkok, Thailand | 23 (17.7) | 11 (8.5) | 12 (9.2) | 0 (0.0) | Unspecified | 43 (33.1) | Unspecified |
| Australasia | |||||||
| Auckland, New Zealand | 75 (57.3) | 41 (31.3) | 11 (8.4) | 13 (9.9) | 13 (9.9) | 7 (5.3) | 6 (4.6) |
| Christchurch, New Zealand | 45 (71.4) | 19 (30.2) | 11 (17.5) | 15 (23.8) | 18 (28.6) | 2 (3.2) | 16 (25.4) |
| Adelaide, Australia | 89 (66.4) | 65 (48.5) | 12 (9.0) | 12 (9.0) | 38 (28.4) | 17 (12.7) | 21 (15.7) |
| Victoria, Australia | 72 (63.2) | 56 (49.1) | 8 (7.0) | 8 (7.0) | 29 (25.4) | 10 (8.8) | 19 (16.7) |
| Brisbane, Australia | 75 (39.9) | 41 (21.8) | 11 (5.9) | 23 (12.2) | 56 (29.8) | 44 (23.4) | 12 (6.4) |
| North America and Canada | |||||||
| Toronto, Canada | 43 (66.2) | 32 (49.2) | 10 (15.4) | 1 (1.5) | 20 (30.8) | 7 (10.8) | 13 (20.0) |
| Miami, USA | 637 (47.6) | 278 (20.8) | 89 (6.7) | 270 (20.2) | 664 (49.6) | 345 (25.8) | 319 (23.8) |
| Pittsburgh, USA | 797 (75.7) | 638 (60.6) | 115 (10.9) | 44 (4.2) | 256 (24.3) | 71 (6.7) | 185 (17.6) |
| Los Angeles, USA | 48 (58.5) | 34 (41.5) | 9 (11.0) | 5 (6.1) | 30 (36.6) | 13 (15.9) | 17 (20.7) |
| Texas, USA | 45 (43.3) | 25 (24.0) | 12 (11.5) | 8 (7.7) | 32 (30.8) | 18 (17.3) | 14 (13.5) |
| Durham, USA | 314 (80.9) | 197 (50.8) | 57 (14.7) | 78 (20.1) | 74 (19.1) | 40 (10.3) | 34 (8.8) |
| Europe | |||||||
| Paris, France | 172 (83.1) | 116 (56.0) | 19 (9.2) | 37 (17.9) | 35 (16.9) | 21 (10.1) | 14 (6.8) |
| Laussanne, Switzerland | 57 (76.0) | 45 (60.0) | 10 (13.3) | 2 (2.7) | 18 (24.0) | 7 (9.3) | 11 (14.7) |
| Anatolia, Turkey | 155 (68.9) | 115 (51.1) | 35 (15.6) | 5 (2.2) | 20 (8.9) | 15 (6.7) | 5 (2.2) |
| Amsterdam and Rotterdam | 46 (41.4) | 25 (22.5) | 16 (14.4) | 5 (4.5) | 58 (52.3) | 35 (31.5) | 23 (20.7) |
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