Tick Borne Illnesses

Tickborne Disease Data

Purpose

To monitor the epidemiology, incidence and geographic distribution of tickborne diseases.

Collection Period

2017-2022

Key Points

This data represents cases of anaplasmosis, babesiosis, ehrlichiosis, and Lyme disease.
Other tickborne diseases are not displayed here due to the Rhode Island Small Numbers Reporting Policy.

Data Source

Extracted from Rhode Island National Electronic Disease Surveillance System in April 2023. Probable and confirmed cases are based on lab work reported to the Rhode Island Department of Health.

Data Notes

The 2022 Lyme disease case count increase is a direct result of the Council of State and Territorial Epidemiologists (CSTE) Lyme disease case definition change for 2022. Rhode Island is a Lyme disease high incidence state and is reporting cases based on laboratory results per the new case definition guidance.
Data are reported based on MMWR year, which differs slightly from calendar year.
Counts are only displayed if 5 or greater. Rates are only displayed if numerator is greater than 20 and denominator is greater than 100. Read RIDOH's Small Numbers Policy for additional information.