Volume 30, Number 4—April 2024
Research
Divergent Pathogenesis and Transmission of Highly Pathogenic Avian Influenza A(H5N1) in Swine
Bailey Arruda
, Amy L. Vincent Baker, Alexandra Buckley, Tavis K. Anderson, Mia Torchetti, Nichole Hines Bergeson, Mary Lea Killian, and Kristina Lantz
, Amy L. Vincent Baker, Alexandra Buckley, Tavis K. Anderson, Mia Torchetti, Nichole Hines Bergeson, Mary Lea Killian, and Kristina Lantz
Table 3
Ct values for nasal swab samples tested for influenza A virus by qRT-PCR by pig and days postinoculation for A/raccoon/WA/22 and A/redfox/MI/22 strains
| Pig ID | Days postinoculation or postcontact |
||||
|---|---|---|---|---|---|
| 0 | 1 | 3 | 5 | 7 | |
| A/raccoon/WA/22 | |||||
| 56 | ND | ND | ND | NA | NA |
| 57 | ND | ND | ND | NA | NA |
| 58 | ND | ND | ND | NA | NA |
| 59 | ND | ND | ND | NA | NA |
| 60 | ND | ND | ND | NA | NA |
| 61 | ND | 33.0 | 34.7 | 33.2 | NA |
| 62 | ND | ND | ND | ND | NA |
| 63 | ND | ND | ND | 38.8 | NA |
| 64 | ND | ND | ND | ND | NA |
| 65 | ND | ND | ND | 32.1 | NA |
| 66 | ND | ND | ND | ND | ND |
| 67 | ND | ND | ND | ND | 29.5 |
| 68 | ND | ND | ND | ND | ND |
| 69 | ND | 36.5 | ND | 36.9 | 35.1 |
| 70 | ND | ND | ND | ND | ND |
| 71 | ND | ND | ND | ND | 38.1 |
| 72 | ND | ND | ND | ND | 32.5 |
| 73 | ND | ND | ND | ND | 35.0 |
| 74 | ND | ND | ND | ND | ND |
| 75 |
ND |
ND |
ND |
ND |
ND |
| A/redfox/MI/22 | |||||
| 76 | ND | ND | ND | NA | NA |
| 77 | ND | ND | ND | NA | NA |
| 78 | ND | ND | ND | NA | NA |
| 79 | ND | ND | ND | NA | NA |
| 80 | ND | ND | ND | NA | NA |
| 81 | ND | ND | ND | ND | NA |
| 82 | ND | ND | ND | ND | NA |
| 83 | ND | ND | ND | ND | NA |
| 84 | ND | ND | ND | ND | NA |
| 85 | ND | ND | 34.8 | ND | NA |
| 86 | ND | ND | 28.1 | 39.2 | 37.1 |
| 87 | ND | ND | ND | ND | 37.9 |
| 88 | ND | ND | ND | 36.0 | ND |
| 89 | ND | ND | ND | 35.4 | ND |
| 90 | ND | ND | ND | 38.9 | ND |
| 91 | ND | ND | ND | ND | ND |
| 92 | ND | ND | ND | ND | ND |
| 93 | ND | ND | ND | ND | ND |
| 94 | ND | ND | ND | ND | ND |
| 95 | ND | ND | ND | ND | ND |
*Ct value of <38.0 indicates a positive sample, 38–40 indicates suspect sample, and ND indicates negative sample. Pigs numbered 71–75 and 91–95 are contact pigs. Ct, cycle threshold; ID, identification; NA, not available (pig previously euthanized as part of study design); ND, not detected; qRT-PCR, quantitative reverse transcription PCR.
Page created: March 07, 2024
Page updated: March 20, 2024
Page reviewed: March 20, 2024
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