Nationwide Surveillance Study on Urinary Antigen Test and Clinical Features in Diagnosis of Legionnaires' Disease -A Multicenter Prospective Observational Study

Nationwide Surveillance Study on Urinary Antigen Test and Clinical Features in Diagnosis of Legionnaires' Disease -A Multicenter Prospective Observational Study - Nationwide Surveillance Study on Urinary Antigen Test and Clinical Features in Diagnosis of Legionnaires' Disease

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000045880

Enrollment

360

Registered

2021-10-27

Start date

2021-11-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Legionnaires&#39

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1) Cases diagnosed as Legionnaires' disease by sputum culture, genetic test (LAMP method), or urine antigen test (2) Suspected cases who are suspected by the attending physician based on findings such as high fever, dry cough, hyponatremia, high LDH, high CRP, and thrombocytopenia, and who have been started on treatment for Legionnaires' disease after excluding pneumonia caused by other microorganisms.

Exclusion criteria

Exclusion criteria: Patients who did not give consent for the study

Design outcomes

Primary

Measure	Time frame
Characteristics of various urinary antigen tests in confirmed cases of Legionnaires' disease	—

Secondary

Measure	Time frame
Comparison of clinical features of Legionnaires' disease caused by L. pneumophila SG1 and other SG and other Legionella spp.	—

Countries

Japan

Contacts

Public ContactMakoto Ishii

Keio University School of Medicine Division of Pulmonary Medicine, Department of Medicine

ishii@keio.jp0333531211

Outcome results