Table 4.
Infectivity of PEDv in the farm-2 EMS.
| Sampling week/date | EMS layer | % of PEDv infective (number of PEDv infective samples/ total number of tested samples) | Infective titer (TCID50)1 | Fisher’s exact test2 |
|
|---|---|---|---|---|---|
| X2 | P-value | ||||
| Week 2 fall/24 October 2014 | Top | 12.5 (2/16) | 1.00E + 02 to 1.00E + 06 | 0 | 1 |
| Bottom | 12.5 (2/16) | 1.00E + 01 to 1.00E + 07 | |||
| Week 4 fall/07 November 2014 | Top | 6.25 (1/16) | 1.00E + 02 | 1.14 | 0.28 |
| Bottom | 18.75 (3/16) | 1.00E + 02 to 1.00E + 04 | |||
| Week 1 spring/08 May 2015 | Top | 0 (0/16) | – | 1.03 | 0.31 |
| Bottom | 6.25 (1/16) | 1.00E + 02 | |||
| Week 2 spring/21 May 2015 | Top | 0 (0/16) | – | 6.36 | 0.01 |
| Bottom | 31.25 (5/16) | 1.00E + 02 | |||
| Week 3 summer/23 July 2015 | Top | 0 (0/16) | – | – | – |
| Bottom | 0 (0/16) | – | |||
1TCID50: the 50% tissue culture infective dose. Greater values are indicative of greater infectivity of virus.
2Statistical comparisons were made between different layers of the EMS within each sampling time point.