Table 1. MERS-CoV microneutralization and nasal swab RT-PCR test results by sampling site, age, sex and animal origin.
| Sampling site |
Microneutralization assay |
Nasal swabs RT-PCR |
||
|---|---|---|---|---|
| Number tested (%) | Number (%) positive | Number tested (%) | Number (%) positive | |
| Live animal market | 172 (6.8%) | 159 (92.4%) | 159 (5.6%) | 4 (2.5%) |
| Free herd | 282 (11.1%) | 202 (71.6%) | 282 (10.0%) | 3 (1.1%) |
| Farm | 1373 (54.0%) | 813 (59.2%) | 1376 (48.7%) | 189 (13.7%) |
| Quarantine | 361 (14.2%) | 342 (94.7%) | 424 (15.0%) | 153 (36.1%) |
| Slaughterhouse | 353 (13.9%) | 292 (82.7%) | 584 (20.7%) | 86 (14.7%) |
| P-value | <0.0001 | <0.0001 | ||
| Age | ||||
| Juvenile | 595 (23.4%) | 221 (37.1%) | 591 (20.9%) | 97 (16.4%) |
| Adult | 1946 (76.6%) | 1587 (81.6%) | 2234 (79.1%) | 338 (15.1%) |
| P-value | <0.0001 | NS | ||
| Sex | ||||
| Male | 1254 (49.4%) | 905 (72.2%) | 1439 (50.9%) | 300 (20.8%) |
| Female | 1090 (42.9%) | 724 (66.4%) | 1089 (38.6%) | 115 (10.6%) |
| Unknown | 197 (7.7%) | 179 (90.9%) | 297 (10.5%) | 20 (6.7%) |
| P-value | <0.0001a | <0.0001b | ||
| Animal origin | ||||
| Imported | 886 (34.9%) | 793 (89.5%) | 1167 (41.3%) | 243 (20.8%) |
| Local | 1655 (65.1%) | 1015 (61.3%) | 1658 (58.7%) | 192 (11.6%) |
| P-value | <0.0001a | <0.0001a | ||
| Total | 2541 | 1808 (71.2%) | 2825 | 435 (15.40%) |
Abbreviations: Middle East respiratory syndrome coronavirus, MERS-CoV; not significant, NS.
A microneutralization positive sample was that with a neutralizing antibody titer ≥1:20. A positive RT-PCR sample was positive by the upE RT-PCR assay and another confirmatory RT-PCR assay.
a
P-value is 0.003 when the unknown category is excluded.
b
P-value is <0.0001 when the unknown category is excluded.