Table 3.
Incidence and age distribution of enteropathogens isolated from patients
| Pathogen | No. (%) of isolates in patients | No. (%) of isolates in patients of the following ages | p value | No. (%) of isolates in patients of the following seasons | p value | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| <1 year (n = 1013) | 1–2 years (n = 711) | 2–5 years (n = 594) | Spring (n = 446) | Summer (n = 855) | Fall (n = 414) | Winter (n = 603) | ||||
| Rotavirus | 443(19.1) | 184(18.2) | 170(23.9) | 89(15.0) | 0.000 | 96(21.5) | 81(9.5) | 69(16.7) | 197(32.7) | 0.000 |
| Calicivirus | 411(17.7) | 151(14.9) | 123(17.3) | 137(23.1) | 0.000 | 101(22.6) | 130(15.2) | 61(14.7) | 119(19.7) | 0.002 |
| Norovirus I | 52(2.2) | 14(1.4) | 15(2.1) | 23(3.9) | 0.005 | 4(0.9) | 18(2.1) | 16(3.9) | 14(2.3) | 0.033 |
| Norovirus II | 320(13.8) | 127(12.5) | 93(13.1) | 100(16.8) | 0.044 | 90(20.2) | 101(11.8) | 41(9.9) | 88(14.6) | 0.000 |
| Sappovirus | 39(1.7) | 10(1.0) | 15(2.1) | 14(2.4) | 0.068 | 7(1.6) | 11(1.3) | 4(1.0) | 17(2.8) | 0.077 |
| Astrovirus | 38(1.6) | 13(1.3) | 12(1.7) | 13(2.2) | 0.383 | 9(2.0) | 9(1.1) | 5(1.2) | 15(2.5) | 0.145 |
| Adenovirus | 51(2.2) | 22(2.2) | 24(3.4) | 5(0.8) | 0.008 | 9(2.0) | 11(1.3) | 14(3.4) | 17(2.8) | 0.067 |
| Diarrheagenic E. coli | 177(7.6) | 6 (6.0) | 43(6.0) | 73(12.3) | 0.000 | 24(5.4) | 98(11.5) | 21(5.1) | 34(5.6) | 0.000 |
| EAEC | 104(4.5) | 39(3.8) | 22(3.1) | 43(7.2) | 0.001 | 14(3.1) | 62(7.3) | 7(1.7) | 21(3.5) | 0.000 |
| EPEC | 40(1.7) | 8(0.8) | 13(1.8) | 19(3.2) | 0.002 | 5(1.1) | 19(2.2) | 9(2.2) | 7(1.2) | 0.281 |
| ETEC | 24(1.0) | 7(0.7) | 6(0.8) | 11(1.9) | 0.071 | 5(1.1) | 11(1.3) | 2(0.5) | 6(1.0) | 0.651 |
| EHEC | 7(0.3) | 5(0.5) | 2(0.3) | 0(0) | NA | 0(0) | 4(0.5) | 3(0.7) | 0(0) | NA |
| EIEC | 2(0.1) | 2(0.2) | 0 0) | 0 0) | NA | 0 0) | 2 0.2) | 0 0) | 0(0) | NA |
| Shigella spp. | 34(1.5) | 15(1.5) | 12(1.7) | 7(1.2) | 0.747 | 4(0.9) | 21(2.5) | 7(1.7) | 2(0.3) | 0.006 |
| S. flexneri | 2(0.1) | 0(0) | 0(0) | 2(0.3) | NA | 0(0) | 2(0.2) | 0(0) | 0(0) | NA |
| S. sonnei | 26(1.1) | 11(1.1) | 10(1.4) | 5(0.8) | 0.621 | 4(0.9) | 18(2.1) | 3(0.7) | 1(0.2) | 0.004 |
| S. boydii | 6(0.3) | 4(0.4) | 2(0.3) | 0(0) | NA | 0(0) | 1(0.1) | 4(1.0) | 1(0.2) | NA |
| Vibrio parahaemolyticus | 29(1.3) | 10(1.0) | 6(0.8) | 13(2.2) | 0.056 | 2(0.4) | 16(1.9) | 7(1.7) | 4(0.7) | 0.062 |
| Salmonella spp. | 15(0.6) | 4(0.4) | 2(0.3) | 9(1.5) | 0.009 | 2(0.4) | 9(1.1) | 2(0.5) | 2(0.3) | 0.312 |
| Campylobacter jejuni | 10(0.4) | 5(0.5) | 2(0.3) | 3(0.5) | 0.764 | 0(0) | 5(0.6) | 3(0.7) | 2(0.3) | NA |
| Plesiomonas shigelloides | 9(0.4) | 2(0.2) | 2(0.3) | 5(0.8) | 0.115 | 2(0.4) | 5(0.6) | 2(0.5) | 0(0) | NA |
| Vibrio cholerae | 6(0.3) | 4(0.4) | 0(0) | 2(0.3) | NA | 0(0) | 3(0.4) | 0(0) | 3(0.5) | NA |
| Aeromonas hydrophila | 5(0.2) | 2(0.2) | 0(0) | 3(0.5) | NA | 0(0) | 5(0.6) | 0(0) | 0(0) | NA |
| Yersinia enterocolitica | 4(0.2) | 5(0.5) | 0(0) | 0(0) | NA | 1(0.2) | 3(0.4) | 0(0) | 0(0) | NA |
| Campylobacter spp. | 3(0.1) | 1(0.1) | 0(0) | 2(0.3) | NA | 0(0) | 0(0) | 2(0.5) | 1(0.2) | NA |
| Amoeba | 14(0.6) | 1(0.1) | 2(0.3) | 10(1.7) | 0.000 | 2(0.4) | 8(0.9) | 4(1.0) | 0(0) | NA |
| Giardia lamblia | 2(0.1) | 0(0) | 2(0.3) | 0(0) | NA | 0(0) | 2(0.2) | 0(0) | 0(0) | NA |
| Cryptosporidiosis | 2(0.1) | 0(0) | 0(0) | 2(0.3) | NA | 0(0) | 0(0) | 2(0.5) | 0(0) | NA |
NA, not applicable; Boldface, indicates statistical significance(p<0.05)