Table 1.
Virus transmission to recipient ferrets over various distances.
| Recipient ferrets | |||||
|---|---|---|---|---|---|
| Virus | Distance between donor and recipient | Transmission | Onset shedding (dpe) | Peak virus shedding (dpe) | Peak virus titer (log10TCID50/mL) |
| A/H1N1 | 10 cm9 | 4/4 | 3, 3, 1, 3a | 3, 3, 5, 5 | 4.8, 5.3, 4.5, 5.0 |
| >1 m | 4/4 | 5, 1, 3, – a | 7, 3, 3, – | 5.3, 5.5, 6.0, – | |
| SARS-CoV-2 | DC6 | 4/4 | 3, 3, 1, 3b | 9, 7, 5, 7 | 3.5, 2.9, 2.3, 3.1 |
| 10 cm6 | 3/4 | 7, 3, 3b | 11, 9, 5 | 4.3, 3.0, 1.7 | |
| >1 m | 2/4 | 1, 3b | 7, 5 | 1.6, 3.7 | |
| SARS-CoV | DC7c | 2/2 | 2, 2b | 8, 8 | 4.1d |
| >1 m | 4/4 | 1, 1, 1, 3b | 5, 3, 5, 3 | 4.0, 3.6, 3.4, 2.6 | |
abased on virus titers; bbased on qRT-PCR Ct-value. DC: direct contact. cdifferent transmission set-up and inoculation route (intratracheally); daverage of two animals; TCID50 equivalent was calculated from a standard curve of serial dilutions of the SARS-CoV virus stock.