“…Standardized efforts to measure risk have been conducted at the state level, where human risk for Lyme disease has been quantiÞed based on vector distribution (Drew et al 1988, Novak et al 1991, Schulze et al 1991, Kitron et al 1992, Daniels et al 1993, Bartholomew et al 1995, Pinger et al 1996, Riehle and Paskewitz 1996, Walker et al 1998, Guerra et al 2001 and human case reports (Glavanakov et al 2001). In studies including both tick surveys and human case surveillance and/or canine serosurveys, these two measurements have been found to be correlated (Rand et al 1991, White et al 1991, Daniels et al 1993, Nicholson and Mather 1996, Kitron and Kazmierczak 1997, Stafford et al 1998, Guerra et al 2001, although this has not always been the case (Mather et al 1996b, Daniels et al 1998, Brownstein et al 2005.…”