Beginning Nov. 20, 2023, every U.S. household can again place an order to receive four more free COVID-19 rapid tests delivered to their home by visiting If you did not order tests this fall, you may place two orders for a total of eight tests. Additionally, before you discard any “expired” test kits you have, please check here to see if the expiration dates of your COVID-19 tests have been extended.


(Legionnaires' disease, Pontiac fever, and extrapulmonary legionellosis)

Legionellosis includes three clinically distinct illnesses, Legionnaires’ disease, Pontiac fever, and extrapulmonary legionellosis, that are all caused by exposure to Legionella bacteria. Legionnaires’ disease most commonly presents as pneumonia. Pontiac fever is a milder, influenza-like illness, and extrapulmonary legionellosis happens when there is disease outside the lungs, (e.g., heart) and diagnostic testing reveals evidence of Legionella at that site.

About Legionella

Surveillance in Connecticut

Information for Patients and the Public

Information for Healthcare Providers and Facilities

Healthcare-Associated Legionnaires' Disease

Epidemiologic Investigation

Environmental Investigation

Information for Building Owners

Water Management Program 


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Legionella  Legionella Activities





This page last updated 3/19/2021.