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To face the Covid19 pandemic, many European countries have developed a public health strategy with digital contact tracing (DCT) applications improving timely tracking and contact tracing. The France's independent COVID-19 Control and Society Connection Council (CCL) has been established by law in May 2020 to issue advice and recommendations on the national epidemic digital systems.

We are presenting here the CCL's recommendations, the objective being to increase French DCT's uptake and utility.

As the country's most vulnerable population has been subjected to greater virus exposure, stronger lockdown impact and less access to prevention and health care services, the CCL is particularly aware of health inequalities.

French apps "TousAntiCovid" had been downloaded by 13.6 million (20%) of the French population in March, 2021. To promote the use of the apps, the CCL had recommended to introduce increased communication about the app's individual and collective objectives. The CCL has also recommended the introduction of clear, simple, accessible, incentivising, non-coercive information inside the tool. In addition, the CCL recommended improving public health policies to address the needs of underprivileged.

The CCL calls for developing population empowerment with digital tools, public health culture for decision-makers dealing with health determinants, taking social considerations into account, and incorporating community participation.

The CCL calls for developing population empowerment with digital tools, public health culture for decision-makers dealing with health determinants, taking social considerations into account, and incorporating community participation.

Social distancing during the COVID-19 pandemic has reduced the frequency of in-person social interactions. College students were highly impacted, since many universities transferred curriculum from in-person to entirely online formats, physically separating students with little notice. With social distancing, their use of social networking sites (SNSs) likely changed during the COVID-19 pandemic, possibly holding implications for well-being.

This study aimed to determine (1) how components of SNS use (ie, weekly frequency, time per day, habitual use, engagement, enjoyment, addiction, and emotional impact) changed from before to during COVID-19, (2) how these changes in SNS use were associated with pandemic-related social and emotional well-being, and (3) how SNS use and changes in use during the pandemic were associated with loneliness.

College students (N=176) were surveyed during the time when their university campus in the United States was operating online. Participants completed the same SNS use quion) while others show a negative association (eg, engagement). These findings provide a more nuanced picture of how SNS use is associated with social and emotional well-being during the time of a global health crisis when in-person interactions are scarce.Weeds are becoming increasingly resistant to our current herbicides, posing a significant threat to agricultural production. Therefore, new herbicides with novel modes of action are urgently needed. In this study, we exploited a novel herbicide target, dihydrodipicolinate synthase (DHDPS), which catalyses the first and rate-limiting step in lysine biosynthesis. The first class of plant DHDPS inhibitors with micromolar potency against Arabidopsis thaliana DHDPS was identified using a high-throughput chemical screen. We determined that this class of inhibitors binds to a novel and unexplored pocket within DHDPS, which is highly conserved across plant species. The inhibitors also attenuated the germination and growth of A. thaliana seedlings and confirmed their pre-emergence herbicidal activity in soil-grown plants. These results provide proof-of-concept that lysine biosynthesis represents a promising target for the development of herbicides with a novel mode of action to tackle the global rise of herbicide-resistant weeds.Introduction. Coronavirus disease 2019 (COVID-19) is a highly contagious disease and ravages the world.Hypothesis/Gap Statement. We proposed that R. crenulata might have potential value in the treatment of COVID-19 patients by regulating the immune response and inhibiting cytokine storm.Aim. We aimed to explore the potential molecular mechanism for Rhodiola crenulata (R. crenulata), against the immune regulation of COVID-19, and to provide a referenced candidate Tibetan herb (R. crenulata) to overcome COVID-19.Methodology. Components and targets of R. crenulata were retrieved from the TCMSP database. GO analysis and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway enrichment were built by R bioconductor package to explore the potential biological effects for targets of R. crenulata. The R. crenulata-compound-target network, target pathway network and protein-protein interaction (PPI) network were constructed using Cytoscape 3.3.0. Autodock 4.2 and Discovery Studio software were applied for molecular docking.Result. Four bioactive components (quercetin, kaempferol, kaempferol-3-O-α-l-rhamnoside and tamarixetin) and 159 potential targets of R. crenulata were identified from the TCMSP database. The result of GO annotation and KEGG-pathway-enrichment analyses showed that target genes of R. crenulata were associated with inflammatory response and immune-related signalling pathways, especially IL-17 signalling pathway, and TNF signalling pathway. Targets-pathway network and PPI network showed that IL-6, IL-1B and TNF-α were considered to be hub genes. Molecular docking showed that core compound (quercetin) had a certain affinity with IL-1β, IL-6 and TNF-α.Conclusion. R. crenulata might play an anti-inflammatory and immunoregulatory role in the cytokine storm of COVID-19.Introduction. Periodontitis, one of the most common oral disorders in sheep, is caused by a mixed and opportunistic microbiota that severely affects the health and welfare of animals. However, little is known about the ecological processes involved and the composition of the microbiota associated with the development of the disease.Hypothesis/Gap Statement. Using high-throughput sequencing of the 16S ribosomal RNA gene and network analysis it would be possible to discriminate the microbiomes of clinically healthy sheep and those with periodontitis and possibly identify the key microorganisms associated with the disease.Aim. The present study aimed to characterise the composition of dental microbiomes and bacterial co-occurrence networks in clinically healthy sheep and animals with periodontitis.Methodology. Dental biofilm samples were collected from ten sheep with periodontitis and ten clinically healthy animals. Bacteria were identified using high-throughput sequencing of the 16S ribosomal RNA gene.Results. with periodontitis.Conclusion. Ciforadenant order The dental biofilm microbiota associated with ovine periodontitis is dysbiotic and with significant antagonistic interactions, which discriminates healthy animals from diseased animals and highlights the importance of key bacteria, such as Petrimonas, Porphyromonas, Prevotella and Fusobacterium species.In the present study, four bacterial strains, two (S-713T and 406) isolated from faecal samples of Tibetan antelopes and the other two (S-531T and 1598) from leaves of dandelion collected on the Qinghai-Tibet Plateau of PR China, were analysed using a polyphasic approach. All four isolates were aerobic, rod-shaped, non-motile, oxidase-negative, Gram-stain-positive and catalase-positive. According to four phylogenetic trees, strain pairs S-713T/406 and S-531T/1598 form two independent branches belonging to the genus Nocardioides, and are closest to Nocardioides lianchengensis, Nocardioides dokdonensis, Nocardioides salarius, Nocardioides marinisabuli, Nocardioides psychrotolerans and Nocardioides szechwanensis. Although sharing MK8-(H4) as their major isoprenoid quinone, strains S-713T and S-531T contained C18  1  ω9c (24.64 and 16.34 %) and iso-C16  0 (9.74 and 29.38 %), respectively, as their main fatty acids, with remarkable differences in their biochemical profiles but only slight ones in their optimal growth conditions. The chromosomes of strains S-713T and S-531T were 4 207 844 bp (G+C content, 73.0 mol%) and 4 809 817 bp (G+C content, 72.5 mol%), respectively. Collectively, the two strain pairs represent two separate novel species of the genus Nocardioides, for which the names Nocardioides dongkuii sp. nov. and Nocardioides lijunqiniae sp. nov. are proposed, with S-713T (=JCM 33698T=CGMCC 4.7660T) and S-531T (=JCM 33468T=CGMCC 4.7659T) as the respective type strains.Thirteen Gram-stain-positive bacterial strains were isolated from Chinese traditional pickle and the gut of honeybee (Apis mellifera). These strains were characterized using a polyphasic taxonomic approach. The data demonstrated that 12 of the 13 strains represented eight novel species belonging to the genera Apilactobacillus, Secundilactobacillus, Levilactobacillus and Lacticaseibacillus; strains HN36-1T, 887-11T, F79-211-2T, 866-3T, 6-5(1)T, 13B17T, 117-1T and ZW152T were designated as the type strains. Based upon the data of polyphasic characterization obtained in the present study, eight novel species, Apilactobacillus nanyangensis sp. nov., Secundilactobacillus hailunensis sp. nov., Secundilactobacillus yichangensis sp. nov., Levilactobacillus andaensis sp. nov., Levilactobacillus wangkuiensis sp. nov., Levilactobacillus lanxiensis sp. nov., Lacticaseibacillus mingshuiensis sp. nov. and Lacticaseibacillus suilingensis sp. nov., are proposed and the type strains are HN36-1T (=JCM 33867T=CCTCC AB 2019385T), 887-11T (=NCIMB 15201T=CCM 8950T=JCM 33864T=CCTCC AB 2018396T), F79-211-2T (=NCIMB 15254T=JCM 33866T=CCTCC AB 2019384T), 866-3T (=JCM 33863T=CCTCC AB 2019383T), 6-5(1)T (=NCIMB 15229T=CCM 8977T=JCM 33564T=CCTCC AB 2019168T), 13B17T (=NCIMB 15230T=CCM 8979T=JCM 33565T=CCTCC AB 2019167T), 117-1T (=NCIMB 15232T=CCM 8980T=JCM 33567T) and ZW152T (=JCM 34363T=CCTCC AB 2020299T=LMG 32143T=CCM 9110T), respectively.Children appear to be less commonly and less severely affected by COVID-19 than adults, accounting for 1% to 5% of all COVID-19 cases. The COVID-19 pande mic has challenged pediatric kidney transplant programs to provide safe and consistent care during this difficult and unprecedented time. So far during this pandemic, best practices being delivered to pediatric kidney transplant patients are based on available information from published literature and expert opinions. The key areas of pediatric kidney transplant care that may be affected by the COVID-19 pandemic include transplant activity, outpatient clinic activity, monitoring, multidisciplinary care, medications (immunosuppression and others), patient/family education/support, school and employment, and care of pediatric kidney transplant patients who are COVID-19 positive. It has been presumed that children with chronic kidney disease and/or those who take immunosuppressants may be at increased risk for complications from COVID-19 infection; however, available evidence has now suggested that immunosuppressed children with kidney transplant are not at increased risk of severe COVID-19 disease. Clinicians should remain aware that transplant recipients may present with atypical symptoms. In addition, because evidence-based reports to support specific adjustments to immunosuppressive medications in relation to COVID-19 are not yet available, decisions on reduction or discontinuation of immunosuppression should be on a case-by-case basis for kidney transplant recipients who are COVID-19 positive. Reports to support evidence-based management of pediatric kidney transplant patients during the COVID-19 pandemic are lacking; therefore, expert opinion and available knowledge and experience remain subject to biases.