Table 2. Enteropathogens in the elderly outpatients (≥65 years) with acute diarrhea in China, 2009–2014.
| Enteropathogens | Number of patients tested | Number of positive patients (%)a | Positive percentage (%) |
|---|---|---|---|
| Virusesb | |||
| Norovirus | 3867 | 346 | 9.0 |
| G I | 3867 | 28 (8.2) | 0.7 |
| G II | 3867 | 315 (91.8) | 8.2 |
| Rotavirus | 3857 | 149 | 3.9 |
| Rotavirus A | 3856 | 130 (87.3) | 3.4 |
| Rotavirus B | 3867 | 7 (4.7) | 0.2 |
| Rotavirus C | 3867 | 12 (8.1) | 0.3 |
| Astrovirus | 3867 | 37 | 1.0 |
| Adenovirus | 3867 | 30 | 0.8 |
| Sapovirus | 3867 | 29 | 0.8 |
| Bacteriab | |||
| DEC | 6122 | 339 | 5.5 |
| ETEC | 6122 | 79 (29.0) | 1.3 |
| EAEC | 6122 | 78 (28.7) | 1.3 |
| EPEC | 6122 | 72 (26.5) | 1.2 |
| EIEC | 6122 | 31 (11.4) | 0.5 |
| EHEC | 6122 | 12 (4.4) | 0.2 |
| NTS | 6728 | 198 | 2.9 |
| S. Enteritidis | 6728 | 31 (24.4) | 0.5 |
| S. Typhimurium | 6728 | 22 (17.3) | 0.3 |
| Others | 6728 | 74 (58.3) | 2.2 |
| Shigella spp. | 6417 | 157 | 2.5 |
| Shigella flexneri | 6417 | 112 (71.3) | 1.8 |
| Shigella sonnei | 6417 | 33 (21.0) | 0.5 |
| Shigella boydii | 6417 | 9 (5.7) | 0.1 |
| Shigella dysenteriae | 6417 | 3 (1.9) | 0.1 |
| Vibrio spp. | 6538 | 87 | 1.3 |
| Aeromonas hydrophila | 6236 | 56 | 0.9 |
| Campylobacter spp. | 5967 | 31 | 0.5 |
| Plesiomonas shigelloides | 6040 | 16 | 0.3 |
| Yersinia spp. | 6359 | 15 | 0.2 |
| Mixed infectionsc | 7725 | 127 | 1.6 |
| Dual infection | 7725 | 114 | 1.5 |
| Triple infection | 7725 | 11 | 0.1 |
| Quadruple infection | 7725 | 2 | 0.0 |
a Percentage of genotypes/serotypes in genotyped/serotyped samples;
b Only refers to single infections;
c Denominators are total number of patients tested for one of 13 enteropathogens.
DEC, Diarrhea-genic Escherichia coli; NTS, Non-typhoidal Salmonella spp.; ETEC, Enterotoxigenic E. coli; EPEC, Enteropathogenic E. coli; EHEC, Enterohaemorrhagic E. coli; EAEC, Enteroaggregative E. coli; EIEC, Enteroinvasive E. coli.