Agnès Lefort

Agnès Lefort

orcid

Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 February 2018 in Emerging Infectious Diseases
Verified
Journal Article
Open access
BRBenjamin Rossi
Benjamin Rossi
MGMaria Ludovica Gasperini
Maria Ludovica Gasperini
VLVéronique Leflon-Guibout
Véronique Leflon-Guibout
AGAlice Gioanni
Alice Gioanni
VLVictoire Dor de Lastours
Victoire Dor de Lastours
ALAgnès Lefort
Agnès Lefort
Liver abscesses containing hypervirulent Klebsiella pneumoniae have emerged during the past 2 decades, originally in Southeast Asia and then worldwide. We hypothesized that hypervirulent K. pneumoniae might also be emerging in France. In a retrospective, monocentric, cohort study, we analyzed characteristics and outcomes for 199 consecutive patients in Paris, France, with liver abscesses during 2010−2015. We focused on 31 patients with abscesses containing K. pneumoniae. This bacterium was present in most (14/27, 52%) cryptogenic liver abscesses. Cryptogenic K. pneumoniae abscesses were more frequently community-acquired (p<0.00001) and monomicrobial (p = 0.008), less likely to involve cancer patients (p<0.01), and relapsed less often (p<0.01) than did noncryptogenic K. pneumoniae liver abscesses. K. pneumoniae isolates from cryptogenic abscesses belonged to either the K1 or K2 serotypes and had more virulence factors than noncryptogenic K. pneumoniae isolates. Hypervirulent K. pneumoniae are emerging as the main pathogen isolated from cryptogenic liver abscesses in the study area.

25 October 2017 in Clinical Infectious Diseases
Verified
Journal Article
Closed access
PDF file
CRClaire Rivoisy
Claire Rivoisy
AVAntonio Vena
Antonio Vena
LSLaura Schaeffer
Laura Schaeffer
CCCaroline Charlier
Caroline Charlier
AFArnaud Fontanet
Arnaud Fontanet
ALAgnès Lefort
Agnès Lefort
Prosthetic valve endocarditis caused by Candida spp. (PVE-C) is rare and devastating, with international guidelines based on expert recommendations supporting the combination of surgery and subsequent azole treatment. We retrospectively analyzed PVE-C cases collected in Spain and France between 2001 and 2015, with a focus on management and outcome. Forty-six cases were followed up for a median of 9 months. Twenty-two patients (48%) had a history of endocarditis, 30 cases (65%) were nosocomial or healthcare related, and 9 (20%) patients were intravenous drug users. “Induction” therapy consisted mainly of liposomal amphotericin B (L-amB)–based (n = 21) or echinocandin-based therapy (n = 13). Overall, 19 patients (41%) were operated on. Patients <66 years old and without cardiac failure were more likely to undergo cardiac surgery (adjusted odds ratios [aORs], 6.80 [95% confidence interval [CI], 1.59–29.13] and 10.92 [1.15–104.06], respectively). Surgery was not associated with better survival rates at 6 months. Patients who received L-amB alone had a better 6-month survival rate than those who received an echinocandin alone (aOR, 13.52; 95% CI, 1.03–838.10). “Maintenance” fluconazole therapy, prescribed in 21 patients for a median duration of 13 months (range, 2–84 months), led to minor adverse effects. L-amB induction treatment improves survival in patients with PVE-C. Medical treatment followed by long-term maintenance fluconazole may be the best treatment option for frail patients.

22 March 2022 in Infection
Verified
Journal Article
Closed access
PDF file
GRGeoffrey Rossi
Geoffrey Rossi
YNYann Nguyen
Yann Nguyen
ELEmmanuel Lafont
Emmanuel Lafont
BRBenjamin Rossi
Benjamin Rossi
ECEtienne Canouï
Etienne Canouï
ALAgnès Lefort
Agnès Lefort

1 August 2017 in Medicine
Verified
Journal Article
Open access
PDF file
CRClémence Richaud
Clémence Richaud
VLVictoire Dor de Lastours
Victoire Dor de Lastours
XPXavière Panhard
Xavière Panhard
DPDavid Petrover
David Petrover
BFBruno Fantin
Bruno Fantin
ALAgnès Lefort
Agnès Lefort
Although increasingly frequent, little is known about the clinical presentation, radiological signs, and outcome of Candida vertebral osteomyelitis (CVO). We performed a nationwide retrospective study of laboratory-confirmed cases of CVO over a 10 year-period in France with a prolonged follow-up. We describe demographic, clinical, biological, and radiological characteristics of patients with CVO, patients’ management, and long-term outcome and determine factors associated with a poor outcome. In total, 28 patients with laboratory-confirmed CVO were included. A prior systemic Candida infection was evidenced in 13/28 (46%), occurring a median of 6 weeks before CVO was diagnosed. Twenty-six of 28 (93%) had at least 1 underlying condition at risk of invasive fungal disease, and in 19/28 (68%) CVO was health-care related. C albicans was most frequently identified (21/28; 75%) Lumbo-sacral involvement was the most prevalent (20/28—71%). Nearly half patients had no fever at presentation, but all had pain. Initial antifungal therapy consisted in fluconazole in 15/28 (53%); surgery was needed in 5 (18%) cases. One-year mortality was 21% (6/28), directly related to fungal infection in 2 patients. Risk-factors associated with 1-year mortality were age (P=.02), a high Charlson comorbidity index (P = .001), and a shorter treatment duration (median, 3 months vs 6 months; P = .02). Among 22 patients who survived, the median follow up duration was 15.5 months (8–93.5); 10 had sequelae, consisting in pain in all and neurological deficit in one. A longer treatment duration was significantly associated with healing without sequelae (P = .04). CVO concerns patients with serious underlying conditions and risk-factors for invasive candidiasis. Prolonged antifungal treatment appears to improve survival without sequelae.

MMMarjan Mohamadi
Marjan Mohamadi
ABAwa Babington-Ashaye
Awa Babington-Ashaye
ALAgnès Lefort
Agnès Lefort
Antoine FlahaultAntoine Flahault
Antoine Flahault
The COVID-19 outbreak is a global health concern. Understanding the transmission modes of the SARS-CoV-2 virus is key to limit the spread of the pandemic. A lack of knowledge about the possibility of SARS-CoV-2 transmission and infection through contaminated surfaces is noticeable and recent studies have stated conflicting findings. This scoping review aims to understand the risks of contaminations via fomites better. Relevant publications were selected through Google Scholar, Web of Science, PubMed, Embase, Medline, and Cochrane Library, with related keywords. PRISMA-ScR guidelines were followed. Out of the 565 articles found, exclusion criteria were applied, duplicates removed, and a total of 25 articles were finally included in the study. The included documents were assessed by the contamination risk: “low” (37.5%), “high” (16.7%), “plausible” (8.3%), “unlikely” (8.3%) risk, and “insufficient evidence” (29.2%). Research in hospital settings was found as the main setting in the reviewed papers, which precisely indicated the risk of contaminated surfaces. This scoping review underscores the risk of SARS-CoV-2 infection via contaminated surfaces assessed as low in the majority of the reviewed articles. Further evaluation of the risk of the virus transmission by fomites and providing adequate information on its infectivity via contaminated surfaces in real-life conditions is essential.

4 January 2023 in European Journal of Clinical Microbiology & Infectious Diseases
Verified
Journal Article
Closed access
PDF file
EOEmma Oliosi
Emma Oliosi
GRGeoffrey Rossi
Geoffrey Rossi
YNYann Nguyen
Yann Nguyen
VHVasco Honsel
Vasco Honsel
FBFrédéric Bert
Frédéric Bert
ALAgnès Lefort
Agnès Lefort