Volume 18, Number 11—November 2012
Research
Lack of Evidence for Zoonotic Transmission of Schmallenberg Virus
Table 4
Characteristics of participating farms and number of human participants in study to determine whether SBV can be zoonotically transmitted, the Netherlands*
Animal species† | No. farms (no. animals/farm) [median]) | Laboratory-confirmed SBV infection in animals, no. (%) |
No. human participants |
||||
---|---|---|---|---|---|---|---|
PCR | VNT | PCR and/or VNT | Total (no. per farm) | No. (%) from farms with laboratory-confirmed SBV infection | |||
Sheep | 69 (5–1,676 [83]) | 48 (70) | 44 (64) | 61 (88) | 130 (1–6) | 112 (86) | |
Goat | 4 (4–1144 [759]) | 1 (25) | 2 (50) | 2 (50) | 8 (1–4) | 2 (25) | |
Cattle | 50 (23–468 [136]) | 4 (8) | 37 (74) | 39 (78) | 96 (1–5) | 78 (81) | |
Total | 123 | 53 (43)‡ | 83 (68)§ | 102 (83) | 234 | 192 (82) |
*A total of 240 farms were invited to participate in the study (113 sheep, 7 goat, and 120 cattle farms; all were highly suspected to be SBV infected on the basis of pathologic findings consistent with typical malformations in calves or lambs). 123 (51%) farms responded. SBV, Schmallenburg virus; VNT, virus neutralization test.
†Mixed farms were classified according to the main animal species.
‡For 9 farms, PCR results not available.
§For 38 farms, VNT results not available.
1These authors contributed equally to this article.