Massachusetts State Seal An official website of the Commonwealth of Massachusetts Here's how you know

Official websites use .mass.gov

A .mass.gov website belongs to an official government organization in Massachusetts.

Secure websites use HTTPS

A lock icon or https:// means you've safely connected to the official website. Share sensitive information only on official, secure websites.

Skip to main content

Tick-borne disease surveillance summaries and data

Health care providers can view various surveillance summaries and data regarding tick-borne diseases.

The Massachusetts Department of Public Health (DPH) conducts ongoing surveillance of several tick-borne diseases, including:

  • Babesiosis
  • Human granulocytic anaplasmosis (HGA)
  • Borrelia miyamotoi
  • Powassan virus
  • Lyme disease
Skip table of contents
You skipped the table of contents section.

Tickborne Diseases Reported in Massachusetts, 2015-2026

The Tickborne Diseases 10-Year Morbidity Report, below, gives an overview of incidence of tickborne disease in Massachusetts.

Tickborne Diseases Reported in Massachusetts, 2015 - 20261
Disease201520162017201820192020202120222023202420252026 YTD1
Lyme Disease243702074161891651032851029728884086194733
Babesiosis448519591527640580610454837788881505
Human Granulocytic Anaplasmosis7718741218658703740773625747106014961149
Borrelia miyamotoi816436332162616475710736
Powassan virus3537976511111213
Total:          11,1156436

1Data are current as of 09/2/2026 and include yearly case counts through 08/31/2026, Data are preliminary and subject to change.
22015 data include confirmed and probable cases defined by specific combinations of laboratory and clinical data obtained during intensive public health follow-up. 2016-2021 data include confirmed and probable cases reported by healthcare providers but without active public health follow-up, resulting in very few patients with sufficient information to record as cases. 2022-2025 data include probable cases recorded following the implementation of a new, laboratory-only set of case criteria. 

Monthly Tick Report Page

Monthly Tick Report Page

Annual Tickborne Disease Surveillance Data

Open DOCX file, 1.89 MB,  Tickborne Disease Surveillance Report 2025 (English, DOCX 1.89 MB)
Open DOCX file, 1.93 MB,  Tickborne Disease Surveillance Report 2024 (English, DOCX 1.93 MB)
Open DOCX file, 1.92 MB,  Tickborne Disease Surveillance Report 2023 (English, DOCX 1.92 MB)
Open DOCX file, 1.89 MB,  Tickborne Disease Surveillance Report 2022 (English, DOCX 1.89 MB)
Open DOCX file, 1.64 MB,  Tickborne Disease Surveillance Report 2021 (English, DOCX 1.64 MB)
Open DOCX file, 1.64 MB,  Tickborne Disease Surveillance Report 2020 (English, DOCX 1.64 MB)
Open DOCX file, 1.65 MB,  Tickborne Disease Surveillance Report 2019 (English, DOCX 1.65 MB)

Babesiosis Surveillance Data

Open DOCX file, 452.11 KB,  Babesiosis Surveillance Data – Annual Summary 2018 (English, DOCX 452.11 KB)
Open DOCX file, 286.34 KB,  Babesiosis Surveillance 2017 (English, DOCX 286.34 KB)
Open DOC file, 1.46 MB,  Babesiosis Surveillance Data - Annual Summary 2016 (doc) (English, DOC 1.46 MB)
Open DOC file, 1.45 MB,  Babesiosis Surveillance Data - Annual Summary 2015 (doc) (English, DOC 1.45 MB)
Open DOC file, 561 KB,  Babesiosis Surveillance Data - Annual Summary 2014 (doc) (English, DOC 561 KB)
Open DOC file, 1.14 MB,  Babesiosis Surveillance Data - Annual Summary 2013 (doc) (English, DOC 1.14 MB)
Open DOC file, 1.1 MB,  Babesiosis Surveillance Data - Annual Summary 2012 (doc) (English, DOC 1.1 MB)
Open DOC file, 1.07 MB,  Babesiosis Surveillance Data - Annual Summary 2011 (doc) (English, DOC 1.07 MB)

Human Granulocytic Anaplasmosis (HGA) Surveillance

Open DOCX file, 472.72 KB,  Human Granulocytic Anaplasmosis (HGA) Surveillance – Annual Summary 2018 (English, DOCX 472.72 KB)
Open DOCX file, 274.28 KB,  HGA Surveillance Summary 2017 (English, DOCX 274.28 KB)
Open DOC file, 5.61 MB,  Human Granulocytic Anaplasmosis (HGA) Surveillance - Annual Summary 2016 (doc) (English, DOC 5.61 MB)
Open DOC file, 1.44 MB,  Human Granulocytic Anaplasmosis (HGA) Surveillance - Annual Summary 2015 (doc) (English, DOC 1.44 MB)
Open DOC file, 1.22 MB,  Human Granulocytic Anaplasmosis (HGA) - Annual Summary 2014 (doc) (English, DOC 1.22 MB)
Open DOC file, 140 KB,  Human Granulocytic Anaplasmosis (HGA) Surveillance - Annual Summary 2013 (doc) (English, DOC 140 KB)
Open DOC file, 1.17 MB,  Human Granulocytic Anaplasmosis (HGA) Surveillance - Annual Summary 2012 (doc) (English, DOC 1.17 MB)
Open DOC file, 1.1 MB,  Human Granulocytic Anaplasmosis (HGA) Surveillance - Annual Summary 2011 (doc) (English, DOC 1.1 MB)

Borrelia Miyamotoi Surveillance Data – Summary 2014-2018

Open DOCX file, 300.04 KB,  Borrelia Miyamotoi Surveillance Data – Summary 2014-2018 (English, DOCX 300.04 KB)

Powassan Virus surveillance data

Open DOCX file, 119.7 KB,  Powassan Virus Surveillance Data – Summary 2013-2018 (English, DOCX 119.7 KB)

Lyme Disease Surveillance Data

Open DOC file, 1.33 MB,  Lyme Disease Surveillance Data - 2014 Annual Summary (doc) (English, DOC 1.33 MB)
Open DOC file, 152 KB,  Lyme Disease Surveillance Data - 2013 Annual Summary (doc) (English, DOC 152 KB)
Open DOC file, 452.5 KB,  Lyme Disease Surveillance Data - 2012 Annual Summary (doc) (English, DOC 452.5 KB)
Open DOC file, 316.5 KB,  Lyme Disease Surveillance Data - 2011 Annual Summary (doc) (English, DOC 316.5 KB)
Open DOC file, 1.14 MB,  Lyme Disease Surveillance Data - 2010 Annual Summary (doc) (English, DOC 1.14 MB)

Co-Infection Surveillance Data

Open DOC file, 480 KB,  Lyme/Babesiosis Co-infection Summary (doc) (English, DOC 480 KB)
Open DOC file, 278 KB,  Lyme/HGA Co-infection Summary (doc) (English, DOC 278 KB)

Help Us Improve Mass.gov  with your feedback

Please do not include personal or contact information.
Feedback