Serologic responses to COVID-19 vaccination in children with history of multisystem inflammatory syndrome (MIS-C).

Understanding the serological responses to COVID-19 vaccination in children with history of MIS-C could inform vaccination recommendations. We prospectively enrolled seven children hospitalized with MIS-C and measured SARS-CoV-2 binding IgG antibodies to spike protein variants longitudinally pre- and post-Pfizer-BioNTech BNT162b2 primary series COVID-19 vaccination. We found that SARS-CoV-2 variant cross-reactive IgG antibodies variably waned following acute MIS-C, but were significantly boosted with vaccination and maintained for up to 3 months.

COVID-19 Vaccine Reactogenicity and Vaccine Attitudes Among Children and Parents/Guardians After Multisystem Inflammatory Syndrome in Children or COVID-19 Hospitalization: September 2021-May 2022.

Background: Multisystem inflammatory syndrome in children (MIS-C) is a multiorgan hyperinflammatory condition following SARS-CoV-2 infection. Data on COVID-19 vaccine adverse events and vaccine attitudes in children with prior MIS-C are limited. We described characteristics associated with COVID-19 vaccination, vaccine adverse events and vaccine attitudes in children with a history of MIS-C or COVID-19 and their parents/guardians.

[Epidemiology of infections associated to "Burkholderia cepacia complex" in the course of cystic fibrosis].

Within a few years bacteriological knowledge on Burkholderia cepacia species has progressed considerably. Within bacterial classification (taxonomy), B. cepacia gathers eight species and one species on standby of nomenclature (genomovar VI); the whole of these species constitutes the "B.

Pseudomonas grimontii sp. nov.

The vernacular name 'fluorescent Pseudomonas group 97-514' was coined for a group of 43 strains isolated from two French natural mineral waters. All these strains were gram-negative, rod-shaped and motile by means of a single polar flagellum. They produced fluorescent pigment (pyoverdin) on King B medium, catalase and cytochrome oxidase.

Siderophore typing, a powerful tool for the identification of fluorescent and nonfluorescent pseudomonads.

A total of 301 strains of fluorescent pseudomonads previously characterized by conventional phenotypic and/or genomic taxonomic methods were analyzed through siderotyping, i.e., by the isoelectrophoretic characterization of their main siderophores and pyoverdines and determination of the pyoverdine-mediated iron uptake specificity of the strains.

Pseudomonas brenneri sp. nov., a new species isolated from natural mineral waters.

The vernacular name 'fluorescent Pseudomonas group 97-391' was coined for a group of 11 strains isolated from two French natural mineral waters. All these strains were Gram-negative, rod-shaped and motile by means of a single polar flagellum. They produced fluorescent pigment (pyoverdin) on King B medium, catalase and cytochrome oxidase.

Pseudomonas gessardii sp. nov. and Pseudomonas migulae sp. nov., two new species isolated from natural mineral waters.

Twenty-five non-identified fluorescent Pseudomonas strains isolated from natural mineral waters were previously clustered into three phenotypic subclusters, XIIIb, XVa and XVc. These strains were characterized genotypically in the present study. DNA-DNA hybridization results and DNA base composition analysis revealed that these strains were members of two new species, for which the names Pseudomonas gessardii sp.

Pseudomonas libanensis sp. nov., a new species isolated from Lebanese spring waters.

The taxonomic position of eight fluorescent Pseudomonas isolates, from two Lebanese spring waters, which were previously recognized by numerical analysis as members of a new subcluster (subcluster Vb) was examined. Except for one strain, the new subcluster exhibited internal DNA hybridization values of 76-100%, and 9-53% hybridization was measured with the type or reference strains of other Pseudomonas species. The highest DNA binding value was found with Pseudomonas marginalis strains (37-53%).

Taxonomic study of bacteria isolated from Lebanese spring waters: proposal for Pseudomonas cedrella sp. nov. and P. orientalis sp. nov.

Deoxyribonucleic acid relatedness studies (S1 nuclease method) have shown that 15 strains isolated from three Lebanese spring waters, belonging to the genus Pseudomonas, formed two homogeneous DNA groups, with a within-group DNA relatedness ranging from 70 to 100%. These groups are referred to as Pseudomonas cedrella sp. nov.

Taxonomic study of bacteria isolated from natural mineral waters: proposal of Pseudomonas jessenii sp. nov. and Pseudomonas mandelii sp. nov.

The taxonomic position of 23 strains isolated from mineral waters and previously grouped in the authentic pseudomonads on the basis of a phenotypic analysis (cluster IX, subclusters XIIIa and XIIIc of VERHILLE, S., ELOMARI, M., COROLER, L.

[Hygienic evaluation of children's bathtubs made of plastics].

Results of hygienic study of baby's baths made of polystyrene are presented. Migration of components of the material into the water is studied, as well as skin-resorptive and sensitizing effect of polystyrene extracts on the organism of laboratory animals. The methodological procedure of hygienic investigation of plastic baby's baths is presented.

[Comparative characteristics of the biological aggressiveness of welding dusts].

The article contains a study of the cytotoxic properties of welding dusts (WD) and their capacity to activate lipoid peroxidation (LP) depending on the particles of chemical composition. A correlation was established between the WD cytotoxic properties, activation of LP in the lungs and the concentration of cremnium dioxide.