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עמוד בית
Fri, 05.12.25

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May 2021
Anat Zalmanovich MD, Ronen Ben-Ami MD, Galia Rahav MD, Danny Alon MD, Allon Moses MD, Karen Olshtain-Pops MD, Miriam Weinberger MD, Pnina Shitrit MD, Michal Katzir MD, Bat-Sheva Gottesman MD, Michal Chowers MD

Background: Pneumocystis jirovecii pneumonia (PJP) is an opportunistic infection in immunocompromised patients. Clusters of PJP, especially among organ transplant recipients in clinic settings were described. Data regarding nosocomial PJP infection among inpatients are limited.

Objectives: To assess the magnitude and characteristics of inpatient healthcare-associated PJP infection (HCA-PJP) in HIV-negative patients.

Methods: A retrospective chart review of hospitalized PJP patients was performed to identify HCA-PJP. The study was performed at six medical centers in Israel from 2006 to 2016. HCA-PJP was defined as cases of hospital-onset or those with documented contact with a PJP patient. We reviewed and cross-matched temporal and spatial co-locations of patients. Clinical laboratory characteristics and outcomes were compared.

Results: Seventy-six cases of PJP were identified. Median age was 63.7 years; 64% men; 44% hematological malignancies; 18% inflammatory diseases; and 61% steroid usage. Thirty-two patients (42%) were defined as HCA-PJP: 18/32 (23.6%) were hospitalized at onset and 14/32 (18.4%) had a previous encounter with a PJP patient. Time from onset of symptoms to diagnosis was shorter in HCA-PJP vs. community-PJP (3.25 vs. 11.23 days, P = 0.009). In multivariate analysis, dyspnea at presentation (odds ratio [OR] 16.79, 95% confidence interval [95%CI] 1.78–157.95) and a tendency toward higher rate of ventilator support (72% vs. 52%, P = 0.07, OR 5.18, 95%CI 0.7–30.3) were independently associated with HCA-PJP, implying abrupt disease progression in HCA-PJP.

Conclusion: HCA-PJP was common. A high level of suspicion for PJP among selected patients with nosocomial respiratory infection is warranted. Isolation of PJP patients should be considered

October 2016
Nathaniel A. Cohen MD, Dan M. Livovsky MD, Shir Yaakobovitch BSc, Merav Ben Yehoyada PhD, Ronen Ben Ami MD, Amos Adler MD, Hanan Guzner-Gur MD, Eran Goldin MD, Moshe E. Santo MD, Zamir Halpern MD, Kalman Paz MD and Nitsan Maharshak MD

Background: Antibiotic treatment of Clostridium difficile infection (CDI) has a high failure rate. Fecal microbiota transplantation (FMT) has proven very effective in treating these recurrences. 

Objectives: To determine which method of fecal microbiota transplantation (upper or lower gastrointestinal) and which type of donor (a relative or unrelated) is superior.

Methods: This is a retrospective analysis of treatment protocols and outcomes in 22 patients with refractory or recurrent CDI who underwent FMT at two Israeli facilities. Each center used a different donor type, stool preparation and method of delivery. The Tel Aviv Sourasky Medical Center used unrelated fecal donors and frozen stool samples and delivered them primarily (92%) via the lower gastrointestinal (GI) tract. Shaare Zedek Medical Center used fresh donor stool of relatives and delivered them primarily (90%) via the upper GI tract.

Results: FMT had an overall 2 month cure rate of 89%. Patients treated with FMT that was executed through the lower GI tract recovered faster from the infection (1.6 ± 1.08 vs. 2.4 ± 1 days for the upper tract, P = 0.03). The results also showed that patients who received lower GI tract FMTs were more likely to be cured of CDI (100% vs. 75% for upper tract FMTs, P = 0.16). Five patients (22%) died of CDI/FMT-unrelated causes and two (10%) died of CDI/FMT-related causes during the study period.

Conclusions: Lower GI tract FMT is a safe and effective treatment for refractory and recurrent CDI, and yields quicker results than upper GI tract FMT. 

 

August 2015
Nathaniel Aviv Cohen MD, Ronen Ben Ami MD, Hanan Guzner-Gur MD, Moshe Erwin Santo MD, Zamir Halpern MD and Nitsan Maharshak MD

Clostridium difficile-associated diarrhea is a problem most hospital-based physicians will face in their career. This review aims to refresh current knowledge with regard to Clostridium difficile infection and bring physicians up to date with the latest developments in the growing field of fecal microbiota transplantation, the benefits it offers, and the promise this and other developments hold for the future. 

July 2015
Tamar Brufman MD, Ronen Ben-Ami MD, Michal Mizrahi MD, Edna Bash MSc and Yael Paran MD

Background: Mycetoma is a chronic and destructive infection caused by either fungus or bacteria. Mycetoma has a characteristic clinical presentation of a triad of tumor-like swelling, draining sinuses, and macroscopic grains. Mycetoma infection is extremely rare in Israel; however, in view of the recent immigration from mycetoma-hyperendemic regions of Africa to Israel, physicians in Israel may encounter this infection.

Objectives: To present two cases of mycetoma caused by Madurella mycatomatis in immigrants from endemic regions in Sudan treated at our hospital, and review the current literature. 

Conclusions: Health care professionals in Israel should suspect mycetoma in patients from endemic countries who present with tumor-like swelling especially in the lower extremity. Health care workers should be able to recognize mycetoma and provide the optimal treatment before the lesion progresses to an advanced and disabling disease. 

 

June 2015
Ronen Ben-Ami MD and David Denning FRCP

Fungal diseases affect a large proportion of the population, ranging in severity from mild superficial infections to life-threatening invasive diseases. Estimates of disease burden are needed to inform public health policies. We estimated the incidence of fungal diseases in Israel based on published surveillance data and risk-based calculations using previously established models. Deaths associated with fungal diseases were estimated from local surveillance data (candidemia) and published reports (invasive aspergillosis). Candidemia was estimated in 649 persons/year and invasive aspergillosis in 254 persons/year; the associated mortality was 2.75 and 0.96 per 100,000 population/year, respectively. Recurrent Candida vulvovaginitis occurs in 130,440 women annually. National incidence rates of cryptococcosis, pneumocystis pneumonia and mucormycosis could not be reliably estimated. Single-center data-derived estimates yielded 24, 26 and 20 cases/year, respectively. Allergic bronchopulmonary aspergillosis, asthma with fungal sensitization and allergic fungal sinusitis affect 8297 (range 2323–11,615), 14,372 (14,372–17,965) and 39,922 (15,969–183,643) persons, respectively. In Israel, candidemia and invasive aspergillosis rank high among infection-related causes of mortality. Allergic fungal diseases cause chronic or recurrent symptoms in a large population and may contribute to asthma-related hospitalization and death. These general estimates should serve as a primer for future efforts to study fungal epidemiology. 

 

June 2005
R. Ben-Ami, Y. Siegman-Igra, E. Anis, G.J. Brook, S. Pitlik, M. Dan and M. Giladi
 Background: Short trips to holiday resorts in Mombassa, Kenya, have gained popularity among Israelis since the early 1990s. A cluster of cases of malaria among returned travelers raised concern that preventive measures were being neglected.

Objectives: To characterize the demographic and clinical features of malaria acquired in Kenya, and to assess the adequacy of preventive measures.

Methods: Data were collected from investigation forms at the Ministry of Health. All persons who acquired malaria in Kenya during the years 1999–2001 were contacted by phone and questioned about use of chemoprophylaxis, attitudes towards malaria prevention, and disease course. Further information was extracted from hospital records.

Results: Kenya accounted for 30 of 169 (18%) cases of malaria imported to Israel, and was the leading source of malaria in the study period. Of 30 malaria cases imported from Kenya, 29 occurred after short (1–2 weeks) travel to holiday resorts in Mombassa. Average patient age was 43 ± 12 years, which is older than average for travelers to tropical countries. Only 10% of the patients were fully compliant with malaria chemoprophylaxis. The most common reason for non-compliance was the belief that short travel to a holiday resort carries a negligible risk of malaria. Only 3 of 13 patients (23%) who consulted their primary physician about post-travel fever were correctly diagnosed with malaria. Twenty percent of cases were severe enough to warrant admission to an intensive care unit; one case was fatal.

Conclusions: Measures aimed at preventing malaria and its severe sequelae among travelers should concentrate on increasing awareness of risks and compliance with malaria chemoprophylaxis.

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