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Item Domestically Acquired Legionnaires' Disease: Two Case Reports and a Review of the Pertinent Literature(2016) Erdogan, Haluk; Arslan, Hande; 27308081Background: Legionella species may colonize in home water systems and cause Legionnaires' disease (LD). We herein report two cases of sporadic LD associated with the solar energy-heated hot water systems of the patients' houses. Case Report: A 60-year-old woman with chronic bronchitis and diabetes mellitus presented with a high fever, abdominal pain, and diarrhea. Physical examination revealed rales, and her chest radiograph showed a homogeneous density in the left lung. The Legionella urinary antigen test was positive, and an indirect fluorescent antibody test revealed a serum antibody titer of 1/520 for L. pneumophila serogroup 1. In the second case, a 66-year-old man with diabetes mellitus was treated for pneumonia at another hospital. After the patient's general condition worsened and he required mechanical ventilation, he was referred to our hospital. The Legionella urinary antigen test was positive. Neither of the patients had been hospitalized or travelled within the previous month. Both patients used hot water storage tanks heated by solar energy; both also used an electrical device in the bathroom to heat the water when solar energy alone was insufficient. The hot water samples from the residences of both patients were positive for L. pneumophila serogroup 1. Conclusion: These cases show that domestic hot water systems heated by solar energy must be considered a possible source of community-acquired LD.Item A Patient with Suspected Myocarditis Associated with Legionnaires' Disease: A Case Report and Review of the Literature(2017) Erdogan, Haluk; Eldem, Halil Olcay; 0000-0002-9033-4236; O-2247-2015; AAE-6201-2021Legionnaires' disease (LD) is a systemic infectious disease caused by Legionella species. It mainly presents with lung involvement. Herein, we present a case with suspected myocarditis associated with LD and review of the relevant literature. An 81-year-old male tourist patient with high fever, cough, imbalance while walking, and confusion presented to the emergency department. The patient was diagnosed with LD based on increased density in the left lower zone on chest x-ray and a positive Legionella urine antigen test. He was administered a combination of claritromycin and levofloxacine on the day of admission. The diagnosis of acute myocarditis was made after worsening of the cardiac functions, ST elevation and troponin I positivity. The patient's symptoms regressed with antibiotic therapy and the patient was transferred to his home country by ambulance plane ten days after admission. A search of PubMed and Web of Science using the keywords "Legionella and myocarditis" revealed 15 case reports, nine of which were in English and were reviewed. There were three female and six male patients with a mean age of 44 years (range: 32-56 years). Seven were diagnosed with LD by urine antigen testing, one by serological testing and culture, and one by direct fluorescent-antibody staining and culture. Myocarditis was diagnosed by biopsy in two patients and by clinical and laboratory findings in the rest. Myocarditis without existing pneumonia was detected in one case. Electrocardiography abnormalities such as atrial flutter, atrioventricular block, torsade de pointes, sinus tachycardia, QT prolongation, ST elevation, and T wave inversion were detected in seven patients. Ventricle dysfunction on echocardiography and cardiac marker abnormality were detected in all but one of the patients (not tested in one patient). Antimicrobial monotherapy was chosen for three of the cases. One patient died due to myocarditis. In conclusion, myocarditis may develop rarely during the course of LD. Clinical suspicion is essential for the diagnosis. Early diagnosis and appropriate treatment may be life-saving.Item Legionnaires' disease(2018) Erdogan, Haluk; 0000-0002-9033-4236; O-2247-2015Legionnaires disease is a severe from of pneumonia caused by Legionella species which arc ubiquitious in both natural and man-made environments. It has high morbidity and case fetality rates. The disease is acquired by aspiration of water or inhalation of aerosols containing the bactena from environmental sources. Early diagnosis and appropriate treatment are important factors in determining prognosis. Clinical and laboratory predictors will not reliably identify cases of legionnaires disease, therefore the diagnosis of Legionnaires' disease requires specific diagnostic tests. The diagnosis of Legionnaires' disease is made by culture, Legionella urinary antigenaria, polymeras ion, or serologic analyses. Isolation of Legionella from clinical samples is the gold standart for diagnosing Legioimaire's disease. Legionella urinary antigen tests are easy and useful for early diagnosis of Legionnaires' disease. Flouroquinolones, macrolides and doxycicline are drugs of choice. Legionnaires' disease is considered a preventable illness since it is possible to control and remove the bacteria in reserviors. In Turkey, travel-associated Legionnaires' disease has a specific surveillance programe since 1996. After the year of 2015, it became mandatory to take environmental cultures for Legionella from the hospital water systems. The aim of this review is to raise awereness for legionollosis and to summarize the current literature.