Volume 20, Number 10—October 2014
Dispatch
Human Babesiosis, Maine, USA, 1995–2011
Table 1
Prevalence of Borrelia burgdorferi in Ixodes scapularis ticks and incidence of Lyme disease and human babesiosis, Maine, 1995–2011
Year | Field surveys |
Laboratory results |
||||||||
---|---|---|---|---|---|---|---|---|---|---|
No. counties (towns) | No. ticks | No. ticks collected/h | No. ticks positive for B. burgdorferi/no. tested (%) | Lyme disease |
Babesiosis |
|||||
No. cases* | Incidence | No. cases† | Incidence | |||||||
1995 | 5 (6) | 498 | 13 | 127/308 (41) | 45 | 3.39 | 0 | 0 | ||
1996 | 6 (7) | 595 | 12 | 131/413 (32) | 63 | 4.74 | 0 | 0 | ||
1997 | 8 (8) | 612 | 7 | 162/420 (39) | 34 | 2.56 | 0 | 0 | ||
1998 | 3 (7) | 580 | 16 | 166/399 (42) | 78 | 5.87 | 0 | 0 | ||
1999 | 5 (12) | 1,444 | 14 | 478/886 (54) | 89 | 6.70 | 0 | 0 | ||
2000 | 6 (11) | 2,390 | 26 | 599/1,164 (51) | 70 | 5.27 | 0 | 0 | ||
2001 | 5 (7) | 967 | 32 | 395/779 (51) | 108 | 8.13 | 1 | 0.08 | ||
2002 | 3 (5) | 773 | 42 | 344/669 (51) | 218 | 16.41 | 2 | 0.16 | ||
2003 | 5 (9) | 986 | 29 | 364/758 (48) | 175 | 13.17 | 3 | 0.24 | ||
2004 | 4 (9) | 799 | 24 | 326/688 (47) | 224 | 16.86 | 5 | 0.39 | ||
2005 | 5 (8) | 1,253 | 21 | 197/402 (49) | 245 | 19.23 | 10 | 0.78 | ||
2006 | 4 (6) | 974 | 40 | 342/525 (65) | 338 | 26.53 | 9 | 0.71 | ||
2007 | 7 (15) | 1,398 | 22 | 269/541 (50) | 530 | 41.60 | 11 | 0.86 | ||
2008 | 4 (11) | 610 | 34 | 192/355 (54) | 909 | 71.34 | 11 | 0.86 | ||
2009 | 3 (5) | 557 | 34 | 228/363 (63) | 976 | 76.60 | 3 | 0.24 | ||
2010 | 5 (7) | 332 | 14 | 145/251 (58) | 751 | 58.94 | 5 | 0.39 | ||
2011 | 5 (7) | 659 | 32 | 223/421 (53) | 1,007 | 79.03 | 9 | 0.71 |
*Centers for Disease Control National Notifiable Diseases Surveillance System Lyme disease case definitions: 1995 for 1995, 1996 definition used for 1996–2001, 2011 definition used for 2002–2011.
†CDC National Notifiable Diseases Surveillance System 2011 babesiosis case definition.