Project description:The Microbiota and Health Study (clinicaltrials.gov: NCT02361164) was a longitudinal, community-based cohort study in Nandipara, a peri-urban community of Dhaka, Bangladesh conducted from April 2013 to October 2016. 267 newborns born to healthy mothers were followed from birth to two years of age. Fecal samples were collected at birth, during subsequent scheduled visits, and when possible during illness episodes. Active surveillance of diarrheal and respiratory infections was conducted by a community-based team of nurses supervised by a physician. Fecal samples of 222 participants were analyzed by metabolomic profiling.
2022-08-08 | ST002247 | MetabolomicsWorkbench
Project description:Genomic surveillance of respiratory viruses USA:WA 2022-2023
Project description:Bordetella bronchiseptica is a gram-negative respiratory pathogen that causes a diverse spectrum of respiratory disease in a wide-range of hosts. We sought to determine if strains of B. bronchiseptica differed in virulence using the mouse model of infection. Mean lethal doses (LD50) of different B. bronchiseptica strains varied widely in the murine model. B. bronchiseptica strain 253 had a LD50 that was 10-fold lower than the prototypical and fully sequenced B. bronchiseptica strain RB50. Using whole genomic transcriptome analysis covering 100% of B. bronchisetpctica strain RB50ÃÂs predicted open reading frames (ORFs), 253 was identified as lacking expression of adenylate cyclase toxin (ACT). Using whole genomic comparative genomic hybridization analysis and whole genome sequencing, we determined that the cya operon, which is required for ACT production, was absent from the 253 genome.
Project description:To unravel distinct pattern of metagenomic surveillance and respiratory microbiota between Mycoplasma pneumoniae (M. pneumoniae) P1-1 and P1-2 and explore the impact of COVID-19 pandemic on epidemiological features
