Table 1.
Characteristics of the included studies for PDCoV infection among pigs in China.
| Reference | Province | Region | No. positive/examined | Coinfection/rate | Detection Method/Target Gene | Study design | Quality score |
|---|---|---|---|---|---|---|---|
| Dong et al. (29) | Anhui, Jiangsu, Hubei, Guangxi | East China/South China/Central China | 14/215 | PEDV/TGEV (50%) | RT-PCR/M/N gene | C-S | 5 |
| Song et al. (23) | Jiangxi | Central China | 120/356 | PEDV (58.3%) | RT-PCR/N gene | C-S | 5 |
| Su et al. (30) | Heilongjiang | Northeast China | 30/109 | - | ELISA/N protein | C-S | 3 |
| Mai et al. (31) | Guangdong | South China | 55/252 | PEDV/TGEV/RoRV/PKV (49.1) | RT-PCR/M gene | C-S | 5 |
| Zhai，et al. (32) | Guangdong, Hainan, Guangxi | South China | 5/390 | PEDV (100%) | RT-PCR/N gene | C-S | 5 |
| Luo et al. (33) | Hebei | North China | 96/871 | - | ELISA/M protein | C-S | 4 |
| Wang et al. (34) | Gansu, Qinghai, Sichuan | Northwest China/ Southwest China | 7/189 | PEDV (42.9%) | RT-PCR/M gene | C-S | 4 |
| Jia et al. (35) | Heilongjiang, Jilin, Liaoning | Northeast China | 26/672 | - | rRT-PCR/N gene | C-S | 3 |
| Zhang et al. (36) | 5 provinces | South China/ East China/ Central China | 813/2987 | PEDV/TGEV /SADS-Cov/ PoRV (90.1%) | RT-PCR/N gene | C-S | 5 |
| Zhang et al. (17) | 18 provinces | 7 districts | 94/719 | PEDV (36.2%) | rRT-PCR/M gene | C-S | 3 |
| Zhang et al. (37) | Henan | Central China | 101/430 | PEDV/TGEV | RT-PCR/S gene | C-S | 5 |
| Feng et al. (38) | Sichuan | Southwest China | 84/634 | PEDV (56.0%) | RT-PCR/− | C-S | 5 |
| Shi et al. (39) | Shanghai | East China | 26/753 | - | RT-PCR/M gene | C-S | 3 |
| Li et al. (40) | 8 provinces | 4 districts | 150/7107 | PEDV/PoRV (16.7%) | RT-PCR/M gene | C-S | 4 |
| Ren et al. (45) | Sichuan, Chongqing | Southwest China | 6/222 | - | RT-PCR/− | C-S | 3 |
| Zhang et al. (46) | Jiangxi | Central China | 78/249 | - | RT-PCR/N gene | C-S | 4 |
| Peng et al. (47) | Sichuan | Southwest China | 20/60 | PEDV/PoRV (85.0%) | RT-PCR/− | C-S | 3 |
| Zhou et al. (48) | Guangdong | South China | 47/273 | PEDV (91.5%) | RT-PCR/− | C-S | 3 |
| Liu et al. (49) | Sichuan | Southwest China | 16/226 | - | RT-PCR/M gene | C-S | 3 |
| Luo et al. (50) | Hebei | North China | 22/130 | PEDV (13.6%) | rRT-PCR/N gene | C-S | 3 |
| Shan et al. (51) | Zhejiang | East China | 12/282 | - | rRT-PCR/− | C-S | 3 |
| Song et al. (52) | Guangdong | South China | 56/420 | PEDV (44.6%) | RT-PCR/− | C-S | 4 |
| Xu et al. (53) | Zhejiang | East China | 21/546 | PEDV/TGEV/PoRV (18.2%) | RT-PCR/N gene | C-S | 5 |
| Feng et al. (54) | Sichuan | Southwest China | 7/141 | PEDV (57.1%) | RT-PCR/N gene | C-S | 5 |
| He et al. (55) | Guangxi | South China | 70/1547 | PEDV/PoRV (32.9%) | RT-PCR/− | C-S | 4 |
| Hou et al. (56) | Hebei | North China | 105/570 | - | ELISA/S1 protein | C-S | 4 |
| Lu et al. (57) | Tianjin | North China | 417/1519 | PEDV/TGEV/PoRV (−) | RT-PCR/M gene | C-S | 4 |
| Duan et al. (58) | Guangxi | South China | 76/914 | PEDV/PoRV (26.3%) | RT-PCR/− | C-S | 4 |
| Feng et al. (59) | Sichuan | Southwest China | 51/430 | - | ELISA/M protein | C-S | 4 |
| Ma et al. (60) | Shanghai | East China | 25/518 | PEDV/PKV/PAstV (96%) | RT-PCR/M gene | C-S | 3 |
| Shi et al. (61) | Guangxi | South China | 46/792 | PEDV/TGEV/PoRV (54.3%) | RT-PCR/N gene | C-S | 3 |
| Yan et al. (62) | Guangxi | South China | 83/1463 | PEDV/TGEV/PoRV (79.5%) | RT-PCR/N gene | C-S | 4 |
| Chang et al. (63) | 5 provinces | East China | 166/594 | PEDV/TGEV/PoRV (58.3%) | RT-PCR/N gene | C-S | 5 |
| Li et al. (64) | Henan | Central China | 54/154 | PEDV (68.5%) | RT-PCR/M gene | C-S | 3 |
| Duan et al. (65) | Guangxi | South China | 92/1206 | PEDV/PoRV (13.6%) | rRT-PCR/− | C-S | 5 |
| Li et al. (66) | Xinjiang | Northwest China | 11/1388 | PEDV (36.4%) | RT-PCR/S gene | C-S | 5 |
| Zhu et al. (67) | Shanxi | Northwest China | 12/184 | - | RT-PCR/N gene | C-S | 3 |
| Wang et al. (68) | Hunan | Central China | 0/303 | PEDV/TGEV/PoRV (−) | rRT-PCR/− | C-S | 5 |
| Wang et al. (69) | Xinjiang | Northwest China | 35/1200 | PEDV/TGEV/PoRV (97.1%) | RT-PCR/− | C-S | 4 |
C-S, cross-sectional study; rRT-PCR, real-time reverse transcription-polymerase chain reaction; ELISA, enzyme-linked immunosorbent assay; PEDV, porcine epidemic diarrhea virus; TGEV, transmissible gastroenteritis virus; PoRV, porcine rotavirus; PKV, porcine kobuvirus; PAstV, porcine astrovirus; SADS-CoV, swine acute diarrhea syndrome coronavirus.