Volume 21, Number 8—August 2015
Research
Prevalence of Hepatitis E Virus Infection in Pigs at the Time of Slaughter, United Kingdom, 2013
Table 1
Serologic analysis of and viral RNA in cecal and plasma samples in 6 pigs ranked by viremia whose HEV plasma load at slaughter exceeded 102 IU/mL, United Kingdom*
Pig viral RNA | Serologic result† | ||||||
---|---|---|---|---|---|---|---|
Cecal Ct‡ |
Plasma Ct |
Viremia, IU/mL§ |
Wantai BR |
IgG BR |
IgM, AU/mL |
Interpretation |
|
24.23 | 23.7 | 5.95 × 105 | 161 | 11.9 | 80.76 | Current acute | |
24.71 | 25.5 | 1.92 × 105 | 1.03 | (0.7) | (2.91) | Early acute | |
33.04 | 34.7 | 4.40 × 103 | 198 | 10.3 | 41.71 | Current acute | |
37.46 | 34.2 | 2.80 × 103 | 299 | 11.6 | 8.94 | Late acute | |
Not detected | 34.3 | 570 | 86 | 11.3 | 4.41 | Late acute | |
39.34 | 37.3 | 270 | 85 | 7.5 | 4.73 | Late acute |
*AU, absorbance units; BR, binding ratio test/cutoff; Ct, cycle threshold; HEV, hepatitis E virus.
†Parentheses indicate BRs below cutoff.
‡Ct for amplification trace.
§Interpolated IU/mL.