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StatPearls, LLC

  • Acute Kidney Injury
  • Influenza, Human
  • Legionnaires' Disease
  • Palliative Care
  • Pneumonia

Legionnaires’ Disease

Legionellosis refers to infections caused by Legionella species, including Pontiac fever and Legionnaires’ disease. Pontiac fever is a self-limited, influenza-like illness without pneumonia, whereas Legionnaires’ disease is a severe, atypical pneumonia most commonly caused by Legionella pneumophila. Legionnaires’ disease can progress rapidly to respiratory failure, shock, acute kidney injury, and multiorgan dysfunction. Approximately one-third of patients require intensive care, with mortality ranging from 4% to 40%. Although the global incidence is rising, legionellosis remains underdiagnosed and underreported. A high index of suspicion, prompt diagnostic testing, and early initiation of appropriate antimicrobials are critical to improving outcomes. Effective management also includes providing supportive care and implementing prevention and control measures to reduce transmission. This activity reviews the epidemiology, clinical features, diagnosis, management, and prevention of legionellosis, with an emphasis on Legionnaires’ disease. This activity also enhances healthcare professionals knowledge of risk factors, early recognition, and diagnostic strategies, while promoting the implementation of guideline-concordant therapy. The activity also emphasizes the importance of supportive care and preventive measures, including environmental monitoring and outbreak response, and highlights how coordinated, multidisciplinary care can improve patient outcomes. In addition, this activity emphasizes the value of interprofessional collaboration among healthcare providers to ensure timely diagnosis, appropriate treatment, and effective control of potential exposure sources. This activity equips healthcare professionals to recognize legionellosis early, select appropriate diagnostic tests, initiate effective therapy, and implement preventive measures to reduce disease transmission.

Credit & MOC Details

Credit information is provided by the course provider. We recommend confirming credit eligibility with the provider or your licensing board before starting the activity.

Credit types

IPCE CreditsUp to 1.5 creditsAAPA Category 1 Credit™Up to 1.5 creditsAMA PRA Category 1 Credit™Up to 1.5 creditsNursingUp to 1.5 creditsPharmacyUp to 1.5 credits

MOC types

ABS — Accredited CMEUp to 1.5 pointsABPM — Accredited CMEUp to 1.5 pointsABPATH — Lifelong LearningUp to 1.5 pointsABA — Lifelong LearningUp to 1.5 pointsABTS — Accredited CMEUp to 1.5 pointsABIM — Medical KnowledgeUp to 1.5 pointsABS — Self-AssessmentUp to 1.5 pointsABP — Lifelong Learning and Self-AssessmentUp to 1.5 pointsABPM — Self-AssessmentUp to 1.5 pointsABTS — Self-AssessmentUp to 1.5 points

FDA REMS

No

Qualifies for MIPS

No

Target Specialties

Cross-Specialty

Relevant across 9 specialties.

Pricing

Fee varies

This provider typically $49–98

See fees on statpearls.com

Listed by the provider

  • Article / monograph / reference
  • Credit · Up to 1.5 credits
  • MOC · Up to 1.5 points
  • Fee varies · this provider typically $49–98
  • Released
    Sep 1, 2026
  • Last day to claim credit
    Sep 1, 2029 3 years left

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