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Giardiasis is highly prevalent in children and is often mildly symptomatic. First-line treatment is metronidazole, but treatment failure is not uncommon. We describe a paediatric series, to identify risk factors for treatment failure and to analyse the safety and effectiveness of other treatment strategies.Retrospective observational study, including children diagnosed with giardiasis from 2014 to 2019. Diagnosis was based on direct visualisation by microscopy after concentration using an alcohol-based fixative, antigen detection and/or DNA detection by polymerase chain reaction in stool. Treatment failure was considered when GI was detected 4 weeks after treatment.A total of 120 patients were included, 71.6% internationally adopted, median age 4.2 (2.3-7.3) years. Only 50% presented with symptoms, mainly diarrhoea (35%) and abdominal pain (14.1%); co-parasitism was frequent (45%). First-line treatment failure after a standard dose of metronidazole was 20%, lowering to 8.3% when a higher dose was administered (p 0.001). Quinacrine was administered in 10 patients, with 100% effectiveness. Children2 years were at higher risk of treatment failure (OR 3.49; 95% CI 1.06-11.53; p = 0.040).In children with giardiasis, treatment failure is frequent, especially before 2 years of age. Quinacrine can be considered as a second-line treatment. After treatment, eradication should be confirmed.

BackgroundCarbapenem-resistant Enterobacteriaceae (CRE) are an emerging problem in the paediatric population worldwide with high mortality rates in bloodstream infection (BSI).ObjectivesTo evaluate predictors of 30 day mortality in CRE BSI in a paediatric cohort.MethodsA retrospective observational single-centre study (December 2005–August 2018) was conducted. Cases of CRE BSI in children 0 to 16 years were included. Microbiological identification (MALDI Biotyper) and antimicrobial susceptibility testing (Vitek2® and MicroScan panel NBC44) according to EUCAST breakpoints were performed. PCR OXVIKP® was used to confirm carbapenemase genes (OXA-48, VIM, KPC, NDM). Demographic characteristics, underlying diseases, source of bacteraemia, antimicrobial therapy and outcomes were collected from medical records. Survival analysis to establish predictors of 30 day mortality was performed.ResultsThirty-eight cases were included; 76.3% were hospital-acquired infections and 23.7% related to healthcare. All patients had at least one underlying comorbidity and 52.6% were recipients of an organ transplant. VIM carbapenemase was the predominant mechanism (92.1%). Previous CRE colonization or infection rate was 52.6%. Intestinal tract (26.3%) and vascular catheter (21.1%) were the most common sources of infection. Crude mortality within 30 days was 18.4% (7/38); directly related 30 day mortality was 10.5%. Conditions associated with an increment in 30 day mortality were intensive care admission and inadequate empirical therapy (P ConclusionsCRE BSI mortality rate is high. The most important factor related to 30 day survival in our CRE BSI cohort in children was empirical treatment that included at least one active antibiotic.