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Monthly Tickborne Disease Reports

Monthly Tick Reports show seasonal trends in reported tick bites and tick-borne disease diagnoses in Massachusetts residents.


Highlights from the reports:

  • Tick activity and tick-borne diseases like Lyme disease, anaplasmosis, babesiosis, Borrelia miyamotoi and Powassan virus, occur year-round in Massachusetts.
  • Although tick activity is weather dependent, there are two peaks during the year; the first begins in March/April and lasts through August, and the second occurs in October-November.
  • The majority of cases of tick-borne disease occur in June through August.
  • Tick-borne diseases are most frequently diagnosed in children and older adults.
  • Although not every tick is carrying a disease, it is important to take steps to avoid all tick bites.
  • Tick-borne disease prevention includes the use of repellents that contain an EPA-registered active ingredient like permethrin or DEET, wearing light colored clothing to more easily spot ticks, doing daily tick checks and promptly and properly removing any attached ticks.
  • Additional information is available at

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