This study presents the current status of human leptospirosis in Croatia from an epidemiological and clinical viewpoint. Data from annual reports of the Croatian Institute for Public Health as well as archives of the University Hospital for Infectious Diseases 'Dr Fran Mihaljevic' (UHID) in Zagreb were used in this retrospective cohort analysis. The mean yearly incidence of leptospirosis from 1990 to 2007 was 1.83/100 000 inhabitants, with an incidence >2.5/100 000 inhabitants recorded approximately every 3-4 years, making Croatia one of the countries with the highest incidence of human leptospirosis in Europe. In addition to the majority of sporadic cases, two minor outbreaks were recorded. The clinical burden and more detailed epidemiology of 130 patients hospitalised at UHID in the period 1997-2007 were also studied. Clinical presentations were as expected, with an overall case fatality rate (CFR) of 0.77%. The most commonly established infective serovars were Australis followed by Saxkoebing and Grippotyphosa. In comparison with previous periods, the mean yearly number of patients with leptospirosis hospitalised at UHID decreased, but among them a rather higher rate of patients with Weil's disease and a higher CFR was observed.
Background Autochthonous human infections with Strongyloides stercoralis have been well documented in many European regions. By exploring patients’ data, we aimed to find elements for its current endemicity in Croatia. Methods This retrospective descriptive study analysed epidemiological and clinical data of patients treated for strongyloidiasis from January 2010 to May 2019 at a teaching hospital in Zagreb, Croatia. The diagnosis was made by direct methods using light microscopy and/or serology. Results Among 65 patients with strongyloidiasis, 60% were men, and 78.5% were 50–79 y of age. The sensitivity of the examination of three stool samples after concentration, saline provocation and serology was 26.2, 80.7 and 86.2%, respectively. Clinical presentation included asymptomatic patients with eosinophilia (41.5%), chronic symptomatic infection (33.8%), acute infection (18.5%) and hyperinfection (6.2%). Twenty patients (30.8%) were immunosuppressed; among four of whom developed hyperinfection, two died. Initially 71.7% of patients were treated with albendazole and 13.3% with ivermectin, with an equal parasitological cure rate (72.2% and 75%; p=0.09). In 11 patients, acute infection was autochthonous in its origin. Conclusions Strongyloidiasis is currently endemic in Croatia and immunosuppressed travellers to this region should be advised to take precautions. Patients undergoing immunosuppression and organ donors from Croatia should be screened.
Human alveolar echinococcosis (HAE), caused by the metacestode stage of Echinococcus multilocularis, has emerged in many European countries over the last two decades. Here, we report the first data on the new HAE focus with increasing incidence in central Croatia, describe its clinical presentation and outcomes in diagnosed patients, and provide an update on the prevalence and geographic distribution of Echinococcus multilocuaris in red foxes. After the initial case in 2017 from the eastern state border, from 2019 to 2022, five new autochthonous HAE cases were diagnosed, all concentrated in the Bjelovar-Bilogora County (the county incidence in 2019 and 2021: 0.98/105, in 2022: 2.94/105/year; prevalence for 2019–2022: 4.91/105). The age range among four female and two male patients was 37–67 years. The patients’ liver lesions varied in size from 3.1 to 15.5 cm (classification range: P2N0M0–P4N1M0), and one patient had dissemination to the lungs. While there were no fatalities, postoperative complications in one patient resulted in liver transplantation. In 2018, the overall prevalence of red foxes was 11.24% (28/249). A new focus on HAE has emerged in central continental Croatia, with the highest regional incidence in Europe. Screening projects among residents and the implementation of veterinary preventive measures following the One Health approach are warranted.
We describe a case of an abrupt onset of polymicrobial Actinomyces naeslundii/Pseudomonas aeruginosa sepsis in a patient with a previously silent abdominal actinomycosis, developed 2 months after colonoscopy when the diagnosis of a left-sided ulcerative colitis was established. Prolonged high-dose ceftriaxone therapy was clinically effective, albeit accompanied by the development of a reversible pseudocholelithiasis that persisted for 5 months.
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