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Surveillance and Genomics of Toxigenic Vibrio cholerae O1 From Fish, Phytoplankton and Water in Lake Victoria, Tanzania
This study reports the occurrence of multidrug resistant V. cholerae O1 in Lake Victoria that are genetically closely related to recent pandemic strains in Tanzania, Kenya and Uganda. The strains identified are also closely related to older pandemic strains recovered in the Democratic Republic of Congo, Burundi and Tanzania up until 1993, suggesting a long-term persistence and wide spatial distribution of pandemic strains within the region with the lake serving as a reservoir. These environmental isolates likely emerged from previous cholera outbreaks and survived in the lake environment for decades through various relatio...
Source: Frontiers in Microbiology - April 29, 2019 Category: Microbiology Source Type: research

Microbial Diversity and Antimicrobial Resistance Profile in Microbiota From Soils of Conventional and Organic Farming Systems
According to this study it may be outlined that soil microbiota is a stable component as it were detected similar composition of microorganisms in soil both in organic as well as in conventional farming systems with similar soil structure and pH. The different amount of phosphorus in soils had no influence on bacterial variety at a genera level although more investigations would be useful to investigate changes among separate species. During evolution microorganisms adapted to survive in ecosystems independently of certain changes and probably serve as a buffer for ecological niches. It is unclear, however, what level of i...
Source: Frontiers in Microbiology - April 25, 2019 Category: Microbiology Source Type: research

A Rapid Antimicrobial Susceptibility Test for Determining Yersinia pestis Susceptibility to Doxycycline by RT-PCR Quantification of RNA Markers
This study was supported by the Israel Institute for Biological Research, Ness Ziona, Israel. Conflict of Interest Statement The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. Acknowledgments We thank Dr. Vered Caspi (Ben-Gurion University) for assisting with the bioinformatics and statistical analyses of the Agilent DNA microarray results. Supplementary Material The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fmicb.2019.00754/full#s...
Source: Frontiers in Microbiology - April 15, 2019 Category: Microbiology Source Type: research

Identification of a nth-Like Gene Encoding an Endonuclease III in Campylobacter jejuni
In this study, a BER homolog encoded by cj0595c (named nth) in C. jejuni was analyzed for endonuclease III activity and for its role in maintaining genomic stability. It was found that inactivation of nth resulted in elevated frequencies of spontaneous fluoroquinolone-resistant (FQR) and oxidative stress resistant (OXR) mutants, compared with the wild-type strain in C. jejuni. Sequencing analysis of the FQR and OXR mutants revealed that the elevated mutation rates were associated with C → T or G → A transition in gyrA (FQR mutants) or perR (for OXR mutants). In an in vitro assay, a purified recombinant C. jej...
Source: Frontiers in Microbiology - April 9, 2019 Category: Microbiology Source Type: research

Identification and management of Shigella infection in children with diarrhoea: a systematic review and meta-analysis
Publication date: December 2017 Source:The Lancet Global Health, Volume 5, Issue 12 Author(s): Kirkby D Tickell, Rebecca L Brander, Hannah E Atlas, Jeffrey M Pernica, Judd L Walson, Patricia B Pavlinac Background Shigella infections are a leading cause of diarrhoeal death among children in low-income and middle-income countries. WHO guidelines reserve antibiotics for treating children with dysentery. Reliance on dysentery for identification and management of Shigella infection might miss an opportunity to reduce Shigella-associated morbidity and mortality. We aimed to systematically review and evaluate Shigella-associated...
Source: The Lancet Global Health - November 19, 2017 Category: International Medicine & Public Health Source Type: research