Tick-borne Diseases

Three Ticks

 

Tick-borne diseases are those spread by the bite of an infected tick. These diseases can be caused by bacteria, parasites, or viruses, although the diseases caused by bacteria are most common. Several tick species found in Connecticut can spread types of bacteria that can cause illness in humans, and infection with more than one is possible through one tick bite. Symptoms and treatment for each disease depends on the type of bacteria, parasite, or virus causing the illness. There are no vaccines to prevent these diseases. In Connecticut, surveillance is conducted to identify tick-borne diseases spread by ticks in the state and those that might be travel-related (diseases acquired out of the state). The Connecticut Department of Public Health conducts surveillance for the following tick-borne diseases: 

 

Anaplasmosis

Babesiosis

Borrelia miyamotoi disease

Ehrlichiosis

Lyme disease

Powassan virus disease

Rocky Mountain spotted fever (RMSF)

Tularemia

 

Ticks and Tick-borne Diseases of the United States

 

The most effective way to avoid getting sick from tick-borne diseases is to prevent tick bites.


Tick species and diseases they can spread in Connecticut include:

 

Blacklegged (“deer”) tick (Ixodes scapularis)

  • Anaplasmosis
  • Babesiosis
  • Borrelia miyamotoi disease
  • Lyme disease
  • Powassan virus disease (can also be spread by Ixodes cookei)

Lone Star Tick (Amblyomma americanum)

  • Ehrlichia chaffeensis
  • Tularemia

American Dog Tick (Dermacentor variabilis)

  • Rocky Mountain spotted fever
  • Tularemia

Connecticut Agricultural Experiment Station

 

The Connecticut Agricultural Experiment Station offers tick testing to Connecticut’s municipal and regional health departments for engorged ticks removed from people. Ticks are tested for the causative agents of anaplasmosis (Anaplasma phagocytophilum), babesiosis (Babesia microti), and Lyme disease (Borrelia burgdorferi). Not all ticks carry disease causing pathogens.

 

Tick Information

Information on Submitting Ticks

Summaries of Tick Testing

Tick Management Handbook

Additional Resources

 

Northeast Regional Center for Excellence in Vector-borne Diseases 

 

Connecticut Provider Reporting Resources

 

Reporting of Diseases, Emergency Illnesses, Health Conditions, and Laboratory Findings

 

Connecticut Provider Reporting Information

Reportable Disease Confidential Case Report Form, PD-23 

Connecticut Laboratory Reporting Information

Reportable Laboratory Findings Form OL-15C

Connecticut Annual Infectious Diseases Statistics

 

National Resources

 

Companion Animal Parasite Council: Reports of tick-borne diseases (Lyme disease, anaplasmosis, and Ehrlichiosis) in dogs

 

List of all tick-borne disease occurring in the United States

 

Workplace Safety - Tick-Borne Diseases - NIOSH

Vector Control Resources - CDC EHS

 

 

 

This page last updated 11/10/2020.