Table 1.
Source | No. original records or publications examined | No. usable records | No. states | No. counties | Span of collection years |
---|---|---|---|---|---|
USNTC | 1,264 | 492 | 32a | 236 | 1898–2006 |
NVSL | 10,410 | 6,004 | 22 | 596 | 1985–2008 |
VectorMap | 9,345 | 9,237 | 31a | 296 | 1945–2010 |
Web of Science | 1,384 (420b) | 2,388c | 31a | 908 | 1898–2012 |
All sources | 22,403 | 18,121 | 40a | 1,300 | 1898–2012 |
Total includes the District of Columbia.
A Web of Science literature search conducted on 4 April 2013 returned 1,226 publications for the topic or title words “Amblyomma americanum” or “Lone Star tick.” When combined with publications identified using the snowball technique, a total of 1,384 publications were screened for information on field collection(s) of A. americanum: 379 of those identified in the original Web of Science search included reports of field collection(s), as did an additional 106 references identified via the snowball technique, but only 326 and 94 of these, respectively, yielded usable records.
Of these 1,712 were from publications identified through the original Web of Science search and 676 were from publications identified via the snowball technique.