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 What is Legionnaires Disease?                

Legionnaires disease is a serious type of pneumonia caused by Legionella bacteria. Legionella bacteria can also cause a less serious illness called Pontiac fever. People can get Legionnaires disease or Pontiac Fever when they breathe in small droplets of water in the air that contain Legionella.

Reporting a case

Complete  Morbidity Report and email  to, fax to 302-622-4149

Or call the 24/7 hotline 1-888-295-5156

 For Health Care Providers                                 


Delaware Public Health Lab (DPHL)Legionella Testing Capabilities

Want to test your water for Legionella?

⇒ Stop by Tuesday-Thursday from 8am-4pm to pick up a Legionella sample kit at DPHL 30 Sunnyside Road Smyrna, 19977

 For Building Owners                                           

The key to preventing Legionnaires’ disease is to reduce the risk of Legionella growth and spread. Building owners and managers can do this by maintaining building water systems and implementing controls for Legionella.

Is your building at increased risk for Legionella growth & spread?

Vacation Rental Owners

Hotel Owners and Managers

 For Healthcare Facilities                                   

Centers For Medicare & Medicaid Services (CMS) expects Medicare and Medicare/ Medicaid certified healthcare facilities to have water management policies and procedures to reduce the risk of growth and spread of Legionella and other opportunistic pathogens in building water systems.

 Additional Resources                                        


Contact the Legionnaires Disease Advisory Committee with additional questions at



Office of Infectious Disease Epidemiology

24/7 Emergency Contact Number: 1-888-295-5156

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