Publications by authors named "Katleen De Gaetano Donati"

European countries have included healthcare workers (HCWs) among priority groups for COVID-19 vaccination. We established a multi-country hospital network to measure the SARS-CoV-2 incidence and effectiveness of COVID-19 vaccines among HCWs against laboratory-confirmed SARS-CoV-2 infection. HCWs from 19 hospitals in 10 countries participated in a dynamic prospective cohort study, providing samples for SARS-CoV-2 testing at enrolment and during weekly/fortnightly follow-up.

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  • A study assessed the effectiveness of the autumn 2023 COVID-19 vaccination in 1,305 healthcare workers across 13 European hospitals against confirmed SARS-CoV-2 infections.
  • Overall, the vaccine effectiveness was found to be 22%, with a notable difference in effectiveness before and after the predominant circulation of specific variants (BA.2.86/JN.1).
  • The findings suggest that the autumn 2023 vaccination resulted in only a moderate-to-low reduction in infection rates among healthcare workers, emphasizing the need for ongoing monitoring of vaccine effectiveness for better COVID-19 prevention strategies.
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  • - Syphilis is a sexually transmitted infection that progresses through different stages, and if left undiagnosed, can lead to serious health issues, including tertiary syphilis which causes unusual lesions called gummas.
  • - In a rare case involving an HIV patient, liver involvement was observed during primary syphilis, marked by elevated liver enzymes.
  • - Gummatous syphilis is not commonly reported, so healthcare providers should be aware of it as a possible diagnosis for patients showing positive syphilis tests and liver issues.
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Study Objectives: The primary objective of our study is to assess the endocarditis prevalence in patients admitted to the emergency department (ED) for a primary diagnosis of acute stroke (AS). Secondary objectives are the identification of early markers of endocarditis in AS patients and the analysis of the short-term outcome of this population.

Methods: In this observational, retrospective, cohort study we enrolled consecutive adult patients with a primary diagnosis of AS admitted to the Stroke Unit or to the Neurological Intensive Care Unit of our hospital who were then discharged with a diagnosis of endocarditis.

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  • The study analyzed the effectiveness of hydroxychloroquine (HCQ) in treating COVID-19 by observing 4,396 patients hospitalized in Italy from February to May 2020, revealing mixed results from previous research.
  • Two patient clusters were identified: a younger, healthier group at lower risk of death and an older, sicker group at higher risk, highlighting differing impacts of HCQ on these populations.
  • HCQ appeared to significantly reduce mortality risk in the lower risk cluster, suggesting that it may be more beneficial for patients with fewer comorbidities, potentially clarifying debates around its efficacy in COVID-19 treatment.
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Protease inhibitors have been considered as possible therapeutic agents for COVID-19 patients. To describe the association between lopinavir/ritonavir (LPV/r) or darunavir/cobicistat (DRV/c) use and in-hospital mortality in COVID-19 patients. Multicenter observational study of COVID-19 patients admitted in 33 Italian hospitals.

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  • - The study investigated whether administering heparin in hospitals improves survival rates among COVID-19 patients, due to a linked hypercoagulable condition that can worsen the disease.
  • - An analysis of 2,574 patients across Italy showed that 70.1% received heparin, leading to significantly lower death rates (7.4 vs. 14.0 per 1,000 person-days) among those treated with heparin.
  • - The findings suggest that heparin is associated with a 40% reduction in death risk, especially for critically ill patients, indicating its potential benefit, although further randomized clinical trials are necessary for definitive guidance.
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  • A study investigated factors contributing to in-hospital death among COVID-19 patients in Italy, analyzing data from 3,894 hospitalized individuals from February to May 2020.
  • Key findings showed that impaired renal function, high levels of C-reactive protein, and older age were significant predictors of mortality, with the highest death rates found in Northern Italy (15.6%) compared to Central/Southern regions (6.4%).
  • The results indicated that factors like obesity, tobacco use, and cardiovascular conditions did not correlate with mortality risk, emphasizing the importance of renal health and inflammation in COVID-19 outcomes.
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Background: Elevated high-sensitivity C-reactive protein (hsCRP) increases the risk of cardiovascular disease (CVD) in the general population, but its role as a predictive marker in HIV-positive patients remains unclear. Aim of the study was to evaluate whether hsCRP or other biomarkers are independent predictors of CVD risk in HIV-infected patients.

Methods: Retrospective, nested case-control study.

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Background: Influenza vaccination strategies aim at protecting high-risk population from severe outcomes. Estimating the effectiveness of seasonal vaccines against influenza related hospitalisation is important to guide these strategies. Large sample size is needed to have precise estimate of influenza vaccine effectiveness (IVE) against severe outcomes.

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We retrospectively compared the incidence of neutropenia in two groups of HIV patients with lymphoma, who underwent chemotherapy supported by once-per-cycle administration of pegfilgrastim or by daily subcutaneous injection of filgrastim, respectively. Our findings indicate that pegfilgrastim and filgastrim produce similar results in preventing both neutropenia and febrile neutropenia.

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In order to analyze the clinical relevance of the pharmacokinetic interactions between vinblastine and antiretrovirals described in literature, we evaluated all HIV-infected patients with Hodgkin's lymphoma treated with vinblastine-containing regimens and combination antiretroviral therapy, in a single clinical center. The use of protease inhibitors was independently associated with WHO grade III-IV neutropenia. Moreover, an inverse correlation between dosage of ritonavir and mean nadir neutrophil count was found.

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In the last 15 years, highly active antiretroviral therapy (HAART) has determined a dramatic reduction of both morbidity and mortality in human immunodeficiency virus (HIV)-infected subjects, transforming this infection in a chronic and manageable disease. Patients surviving with HIV in the developed world, in larger number men, are becoming aged. As it would be expected for a population of comparable age, many HIV-infected individuals report a family history of cardiovascular disease, a small proportion have already experienced a cardiovascular event and an increasing proportion has diabetes mellitus.

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Background: The role of Candida glabrata in fungaemia is attributed in part to its reduced susceptibility to azoles, usually due to altered expression of genes encoding drug efflux pumps. The aims of this study were to identify risk factors for fungaemia due to C. glabrata isolates with decreased susceptibility to fluconazole and to analyse the response to antifungal treatment and the clinical outcome of C.

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Nosocomial Candida bloodstream infections rank among infections with highest mortality rates. A retrospective cohort analysis was conducted at Catholic University Hospital to estimate the risk factors for mortality of patients with candidemia. We reviewed records for patients with a Candida bloodstream infection over a 5-year period (January 2000 through December 2004).

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Despite multiple sexual exposure to HIV-1 virus, some individuals remain HIV-1 seronegative (exposed seronegative, ESN). The mechanisms underlying this resistance remain still unclear, although a multifactorial pathogenesis can be hypothesised. Although several genetic factors have been related to HIV-1 resistance, the homozigosity for a mutation in CCR5 gene (the 32 bp deletion, i.

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Background: Diagnosis of HIV infection is recently occurring with increasing frequency in middle-aged and in older individuals. As HAART became available, a minimal beneficial effect on immunological outcome in older in respect of younger subjects has been reported. In fact, both the intensity and the rapidity of the immunological response appeared to be reduced in elderly subjects.

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In this review we summarise the data on the effects of HIV infection and its therapy with antiretroviral drugs on adhesion molecules, considered to be potential biomarkers of endothelial cell function. This is a recent area of interest, given the unexpected associations between antiretroviral therapy, metabolic alterations of lipid profile, and the risk of cardiovascular disease in the absence of clear pathogenetic links. Although convincing prospective data are still scarce, it seems timely to elucidate the potential value of non-invasive, inexpensive tests for predicting cardiovascular risk in HIV-infected patients undergoing highly active antiretroviral therapy (HAART).

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Objectives: To define the incidence, risk factors and short-term predictors of mortality of methicillin-resistant Staphylococcus aureus (MRSA) bacteraemia in HIV-infected patients.

Patients And Methods: All HIV-infected subjects with S. aureus bacteraemia were consecutively enrolled in a case-control study between January 1, 1991 and December 31, 2000 and prospectively followed up.

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