European Legionnaires' Disease Surveillance Network (ELDSNet), European Centre for Disease Prevention and Control (Eurooppa)
European Working Group for Legionella Infections, EWGLI- ja EWGLINET-ryhmät (Eurooppa)
World Health Organization (WHO), hakuun esim. "legionella"
Health Protection Agency (HPA, UK)
Smittskyddsinstitutet, (SMI, Ruotsi)
Statens Serum Institut, (SSI, Tanska)
Nasjonalt Folkehelseinstitutt, (FHI, Norja)
Institut de Veille Sanitaire, (Ranska)
Robert Koch Institut, (Saksa)
Ministrie van Volksgezondheid, Welzijn en Sport, (VWS, Hollanti)
Centers for Disease Control and Prevention, (CDC, USA)
State Government of Victoria, Department of Human Services, (Australia)
United States Environmental Protection Agency, (USEPA, USA), hakuun esim. “legionella”
Legionnaires' disease, Denis Green (Australia)
Legionella experts, Victor Yun ja Janet Stoutin (USA) ryhmä
HC Information Resources Incorporation, Matthew R.Freije (USA)
Legionellose, (Ranska)
Occupational Safety & Health Administration, (OSHA, USA)
Australian Institute of Refrigeration Air Conditioning and Heating, (AIRAH, Australia), hakuun esim. “legionella”
American Society of Heating, Refrigeration and Air-Conditioning Engineers, (ASHRAE, USA), hakuun esim. "legionella"