Volume 18, Number 11—November 2012
    
    Research
Lack of Evidence for Zoonotic Transmission of Schmallenberg Virus
Table 3
Main characteristics of study participants* in study to determine whether SBV can be zoonotically transmitted, the Netherlands*
| Exposure group, risk factor | Exposed | Participants, no. (%)/additional information | 
|---|---|---|
| All | ||
| Total | 301/age 18–88 y; mean 47 y; 25th–75th percentile 36–58 y; 62% male | |
| Exposure to biting insects on SBV-infected farm(s) | Yes | 150 (50) | 
| No | 71 (24) | |
|  | Unknown | 80 (26) | 
| Farmers, total | 234 | |
| Working and living on SBV-infected farm | 191 (82) | |
| Working on SBV-infected farm | 26 (11) | |
| Living on SBV-infected farm | 15 (6) | |
| Unknown | 2 (1) | |
| Exposure to animals | ||
| Sheep | ||
| Regular contact with lambs and/or birth products on SBV-infected farm | Yes | 110, of whom 88 reported hand (skin) injuries during work | 
| 
 | No | 31 | 
| Total | 141 | |
| Goats | ||
| Regular contact with kids and/or birth products on SBV-infected farm | Yes | 3, of whom 3 reported regular hand (skin) injuries during work | 
| 
 | No | 10 | 
| Total | 13 | |
| Cattle | ||
| Regular contact with calves and/or birth products on SBV-infected farm | Yes | 90, of whom 72 reported regular (hand) skin injuries during work | 
| 
 | No | 38 | 
| Total |  | 128 | 
| Veterinarians | ||
| Total | 67/1–50 SBV-infected farms visited per veterinarian; median 4 | |
| Exposure to animals | ||
| Sheep | ||
| Contact with malformed lambs and/or birth products | Yes† | 19, of whom 18 reported regular hand (skin) injuries during work | 
| 
 | No | 29 | 
| Total | 48 | |
| Goats | ||
| Contact with malformed lambs and/or birth products | Yes† | 1 who reported regular hand (skin) injuries during work | 
| 
 | No | 29 | 
| Total | 30 | |
| Cattle | ||
| Contact with malformed calves and/or birth products | Yes† | 33, of whom 28 reported regular hand (skin) injuries during work | 
| 
 | No | 20 | 
| Total | 53 | |
| Contact with malformed lambs/calves during section at Animal Health Service | Yes | 11, of whom 6 reported regular hand (skin) injuries during work. | 
*Overall, 50 (75%) of 67 veterinarians reported contact with malformed lambs/calves and/or birth products of which 40 reported regular hand (skin) injuries during work. Overall, 179 (76%) of 234 farmers, farm residents and farm employees reported regular contact with newborn lambs/calves and/or birth products on SBV-infected farms, of which 140 reported regular hand (skin) injuries during work. SBV, Schmallenburg virus.
†All tested seronegative.
1These authors contributed equally to this article.
