A new human coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), emerged at the end of 2019 in Wuhan, China that caused a range of disease severities; including fever, shortness of breath, and coughing. This disease, now known as coronavirus disease 2019 (COVID-19), quickly spread throughout the world, and was declared a pandemic by the World Health Organization in March of 2020. As the disease continues to spread, providing rapid characterization has proven crucial to better inform the design and execution of control measures, such as decontamination methods, diagnostic tests, antiviral drugs, and prophylactic vaccines for long-term control.
View Article and Find Full Text PDFMutants of an attenuated (ΔANR) strain conferring increasing levels of ciprofloxacin resistance have been described. Here, we report the draft genome sequences of the parent strain (ΔANR pXO1, pXO2) and its derivatives conferring low (step 1; 0.5 μg/ml), medium (step 2; 8 to 16 μg/ml), and high (step 3; 32 to 64 μg/ml) levels of ciprofloxacin resistance.
View Article and Find Full Text PDFFollowing an intentional or accidental bio-warfare agent (BWA) release, environmental sample analysis is absolutely critical to determine the extent of contamination. When dealing with nonspore forming BWA (e.g.
View Article and Find Full Text PDFEnvironmental surface sampling is crucial in determining the zones of contamination and overall threat assessment. Viability retention of sampled material is central to such assessments. A systematic study was completed to determine viability of vegetative cells under nonpermissive storage conditions.
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