Table 5:
Detection of α-CoV in pharyngo-tracheal swabs and feces in negative SARS-CoV-2 mink farms in France
| SARS-CoV-2 RNA RT-qPCR on | CoV RT-PCR of pol gene on | |||
|---|---|---|---|---|
| Pharyngo-tracheal swabs | Pharyngo-tracheal swabs*1 | Feces pools*1 | ||
| Farm | Nb of buildings | Positive/tested (%) | Positive/tested (%) | Positive/”exploitable” (%) |
| B | 2 | 0/120 (0) | 0/28* (0) | Not tested |
| C | 9 | 0/395 (0) | 2/65*1 (3.1) | 1/25*1,2 (4) |
| D | 20 | 0/966 (0) | 9/143*1 (6.3) | 2/23*1,3 (8.7) |
*1
Randomized collection in different buildings in the farm
*2
For farm B, of 56 feces pools tested, 31 samples tested negative for the presence of beta-actin gene and were then considered as “not exploitable”. The prevalence was calculated as follows: samples tested positive for the presence of coronavirus RNA / total of “exploitable” samples *100.
*3
For farm C, of 34 feces pools tested, 23 samples tested positive for the presence of beta-actin gene and 11 tested negative (the 11 were considered as not exploitable” for calculation of the prevalence).