Volume 20, Number 8—August 2014
Dispatch
Natural Intrauterine Infection with Schmallenberg Virus in Malformed Newborn Calves
Calixte Bayrou1, Mutien-Marie Garigliany1, Michael Sarlet, Arnaud Sartelet, Dominique Cassart, and Daniel Desmecht
Table 2
Correlation between spinal neuron counts and axial muscle histologic changes in 15 SBV-infected newborn calves, Belgium, January–March 2012*
| Structure examined | Control calves | WBD/calf ID |
|||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WBD-0 |
WBD-1 |
WBD-2 |
WBD-3 |
||||||||||||||||
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | |||||
| Axial muscles, histology | |||||||||||||||||||
| Musculus semispinalis capitis, cas | 0 | NT | 0 | 0 | 0 | 3 | 0 | 3 | 3 | NT | 3 | 3 | 3 | 3 | 3 | 3 | |||
| Musculus semispinalis capitis, ces |
0 |
NT |
1 |
0 |
0 |
2 |
0 |
3 |
3 |
NT |
3 |
3 |
3 |
3 |
3 |
3 |
|||
| Spinal cord | |||||||||||||||||||
| Dorsal horn neurons, no. | |||||||||||||||||||
| Left dorsal horn | 12 + 5 | NT | 11 | 21 | 4 | 5 | 10 | 5 | 1 | NT | 4 | 0 | 0 | 0 | 7 | 3 | |||
| Right dorsal horn |
11 + 4 |
NT |
23 |
17 |
6 |
5 |
10 |
7 |
3 |
NT |
5 |
1 |
0 |
0 |
5 |
0 |
|||
| Ventral horn neurons, no. | |||||||||||||||||||
| Left ventral horn. | 50 + 10 | NT | 56 | 57 | 15 | 1 | 45 | 9 | 1 | NT | 0 | 0 | 0 | 0 | 7 | 0 | |||
| Right ventral horn | 50 + 4 | NT | 47 | 55 | 14 | 3 | 31 | 7 | 0 | NT | 0 | 0 | 0 | 0 | 4 | 0 | |||
*Extent of histologic changes was reported semiquantitatively by using a score of 0, 1, 2, or 3 depending on whether the histologically normal tissue extended over 100%, 75%–100%, 25%–75%, or <25% of the area examined and intensity of shading reflects these values. Neurons were enumerated in transverse sections of the spinal cord corresponding to C4. Intensity of shading reflects the magnitude of neuron deficits. SBV, Schmallenberg virus; WBD, whole-body deformity score; NT, not tested; cas, concave side; ces, convex side.
1These authors contributed equally to this article.
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Page updated: July 18, 2014
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