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Volume 13, Number 4—April 2007
Dispatch

Human Babesia microti Incidence and Ixodes scapularis Distribution, Rhode Island, 1998–2004

Sarah E. Rodgers*1 and Thomas N. Mather*Comments to Author 

Author affiliations: *University of Rhode Island, Kingston, Rhode Island, USA;

Main Article

Figure 2

Risk for human case of babesiosis, Rhode Island, USA, derived from simple logistic regression analysis of census tracts with and without babesiosis cases (Figure 1), predicted by average Ixodes scapularis nymphs collected per hour per census tract. The cut-off level for the 2 classes was decided by the number of nymphs collected per hour needed to create a 20% probability of a babesiosis case occurring in a census tract. The continuous nymphal tick abundance surface was modified to subtract area

Figure 2. Risk for human case of babesiosis, Rhode Island, USA, derived from simple logistic regression analysis of census tracts with and without babesiosis cases (Figure 1), predicted by average Ixodes scapularis nymphs collected per hour per census tract. The cut-off level for the 2 classes was decided by the number of nymphs collected per hour needed to create a 20% probability of a babesiosis case occurring in a census tract. The continuous nymphal tick abundance surface was modified to subtract areas unsuitable for tick habitat because they contain water, unforested agriculture, or urban land.

Main Article

1Current affiliation: Swansea University, Wales, United Kingdom

Page created: June 28, 2010
Page updated: June 28, 2010
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