[Vaccination of children and adolescents treated for acute leukemia, excluding HSCT recipients: Recommendations of the French Society for Childhood and Adolescent Cancer and Leukemia (SFCE)].

Children and adolescents who are being treated or have been treated for acute leukemia have a secondary immunodeficiency linked to chemotherapy, resulting in an increased risk of infections. Some of which can be prevented by vaccination but its effectiveness is not optimal during chemotherapy. Upon cessation of chemotherapy, the time required for immune reconstitution varies from three months to more than a year, depending on lymphocyte subpopulations, the patient's age, and the intensity of the treatment received.

[Invasive fungal infections in immunocompromised children in paediatric haematology: Recommendations for management in SFCE centres].

Introduction: To date, invasive fungal infections (IFIs) are still responsible for a high mortality rate in children managed for haematological malignancy. Although Candida and Aspergillus infections remain in the majority, emerging fungal infections are increasingly common. Children differ from adults in their pathology and treatment, as well as in their prior fungal colonisation and unique pharmacokinetics.

[Practical management during maintenance therapy of pediatric acute lymphoblastic leukemia: Recommendations of the French Society for Childhood and Adolescent Cancer and Leukemia (SFCE)].

Maintenance therapy is the last phase of treatment for acute lymphoblastic leukemia in children and adolescents. Although maintenance therapy is associated with toxicities and specific management issues, it is an essential phase of treatment that reduces the risk of relapse. The objective of this work is to propose a guide for the initiation, administration, and monitoring of maintenance therapy, and for the management of food, schooling, leisure, community life, risk of infection and links with family medicine.

Antifungal combination therapy for invasive fungal infections in a paediatric oncology and haematology department: A retrospective analysis of practice.

Background: Invasive fungal infections (IFI) are an important cause of morbidity and mortality in children with leukaemia. International guidelines recommend a monotherapy for most IFI. The use of antifungal combination therapy (ACT) has been reported, but clinical data supporting these combinations are scarce, particularly in paediatrics.

Transmission Routes of Severe Acute Respiratory Syndrome Coronavirus 2 Among Healthcare Workers of a French University Hospital in Paris, France.

In this case-control study on 564 healthcare workers of a university hospital in Paris (France), contacts without protection with coronavirus disease 2019 (COVID-19) patients or with colleagues were associated with infection with severe acute respiratory syndrome coronavirus 2, whereas working in a COVID-dedicated unit and having children kept in childcare facilities were not.

Comparing Dynamics and Determinants of Severe Acute Respiratory Syndrome Coronavirus 2 Transmissions Among Healthcare Workers of Adult and Pediatric Settings in Central Paris.

Background: Healthcare workers (HCWs) have paid a heavy toll during the coronavirus disease 2019 (COVID-19) outbreak. Routes of transmission remain to be fully understood.

Methods: This prospective study compared a 1500-bed adult and 600-bed pediatric setting of a tertiary-care university hospital located in central Paris.

Pseudomonas aeruginosa bloodstream infections in children: a 9-year retrospective study.

P. aeruginosa bloodstream infection (BSI) is associated with high hospital mortality. Empirical combination therapy is commonly used, but its benefit remains debated.

Sepsis inhibits tumor growth in mice with cancer through Toll-like receptor 4-associated enhanced Natural Killer cell activity.

Sepsis-induced immune dysfunctions are likely to impact on malignant tumor growth. Sequential sepsis-then-cancer models of tumor transplantation in mice recovering from sepsis have shown that the post-septic immunosuppressive environment was able to promote tumor growth. We herein addressed the impact of sepsis on pre-established malignancy in a reverse cancer-then sepsis experimental model.

Salvage Strategy for Long-Term Central Venous Catheter-Associated Infections in Children.

Current international guidelines strongly recommend catheter removal in case of central line-associated bloodstream infection (CLASBI), but a catheter salvage strategy may be considered in children given age-related specificities. No data is available regarding the outcome of this strategy in children. This study aims to evaluate catheter salvage strategy in children with CLABSI, and to determine treatment failure rates and associated risk factors.

Trichosporon: another yeast-like organism responsible for immune reconstitution inflammatory syndrome in patients with hematological malignancy.

Trichosporon has recently emerged as a life-threatening opportunistic fungal pathogen, notably in patients with hematological malignancy. Fungemia, sometimes associated with cutaneous lesions and/or pneumonitis, is the major clinical form. Here, we report two cases of patients suffering from acute leukaemia who developed hepatic and/or splenic lesions apart from Trichosporon positive blood cultures.

Sepsis-induced expansion of granulocytic myeloid-derived suppressor cells promotes tumour growth through Toll-like receptor 4.

Severe sepsis remains a frequent and dreaded complication in cancer patients. Beyond the often fatal short-term outcome, the long-term sequelae of severe sepsis may also impact directly on the prognosis of the underlying malignancy in survivors. The immune system is involved in all stages of tumour development, in the detection of transforming and dying cells and in the prevention of tumour growth and dissemination.