2019 human lyme disease (ld) and rocky mountain spotted … · 0 12.5 25 50 miles vector of lyme...

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ALEXANDERPUTNAM

2019 Human Lyme Disease (LD) and Rocky Mountain Spotted Fever (RMSF) Potential Exposure Locations

Note: Each circle on this map is plotted at a specified location where anexposure* may have occurred for LD or RMSF in 2019. Each square is representative of county-level exposures for LD or RMSF where specific locations within the county were unknown. This map is not representative of total case counts for LD or RMSF in Illinois because reported cases with exposures outside Illinois are not included on this map and a single case mayhave multiple exposure locations identified. Because ticks that transmit RMSF or LD are found throughout Illinois, the best defense against tickborne infections is reducing your risk of tick bites. *Exposure is defined as having been in wooded, brushy, or grassy areas (potential tick habitats) in the 30 days prior to symptom onset for LD or within 14 days prior to symptom onset for RMSF.Data for this map is reported to IDPH by local health departments as part of their case investigations.This data is preliminary and subject to change.Tick Image Courtesy of CDC

³0 25 5012.5

Miles

Vector of Lyme Disease

Vector of Rocky Mountain Spotted Fever

Blacklegged Tick (Ixodes scapularis)

American Dog Tick (Dermacentor variabilis)

Date: 11/5/2019

Land Cover TypeOpen WaterDevelopedForestedAgriculturalWetlandPotential RMSF ExposurePotential LD Exposure