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There were 10,652,513 eligible people aged ≥6 years in Wuhan (94.1% of the total population). In this study, we report the organisation process, detailed technical methods used, and results of this citywide nucleic acid screening.
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The citywide screening of SARS-CoV-2 infection in Wuhan is a mass screening programme in post-lockdown settings, and provided invaluable experiences or lessons with international relevance as more countries and cities around the world entering the post-lockdown phase. In order to ascertain the current status of the COVID-19 epidemic, the city government of Wuhan carried out a comprehensive citywide nucleic acid screening of SARS-CoV-2 infection from to June 1, 2020. However, there was still concern about the risk of COVID-19 in Wuhan, which seriously affected the resumption of industrial production and social services, and hampered the normal lives of residents. During the first 2 months after city’s reopening, there were only a few sporadic COVID-19 cases in Wuhan (six newly confirmed cases from April 8 to 2). As the city most severely affected by COVID-19 in China, Wuhan had been under lockdown measures from January 23 until April 8, 2020.
#Spss 16.0 guide to data analysis how to#
In this phase, countries face new problems and challenges, including how to accurately assess the post-lockdown risk of the COVID-19 epidemic, how to avoid new waves of COVID-19 outbreaks, and how to facilitate the resumption of economy and normal social life. Following strict lockdown measures, the COVID-19 epidemic was generally under control in China, and the whole country has progressed into a post-lockdown phase. In conclusion, the results showed that the well-established iKnife–REIMS method was high-throughput, rapid, and reliable in the real-time quality assessment of DSCs.The Coronavirus Disease 2019 (COVID-19) was first reported in December 2019, and was classified as a pandemic by the World Health Organization on Ma1. Finally, this method was validated to be qualified in precision (RSD intraday ≤ 9.65% and RSD interday ≤ 9.36%). The receiver operating characteristic curve revealed that the ions of m/z 739.5, m/z 831.5, m/z 847.6, and m/z 859.6 were the most specific and characteristic candidate biomarkers for quality assessment of DSCs during accelerated storage. The results showed that the discrepancy in the characteristic ions in different DSCs was significant ( p < 0.05) with high R 2(Y) and Q 2 values (0.975 and 0.986, respectively).
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The lipidomic phenotypes of DSCs at different storage times were acquired successfully, which were then processed by multivariate statistical analysis.
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Herein, an extremely simplified workflow was established for real-time and in situ quality assessment of dried sea cucumbers (DSCs) during storage based on the lipid oxidation characteristics using an intelligent surgical knife (iKnife) coupled with rapid evaporative ionization mass spectrometry (REIMS). It is always processed into dried products to prevent autolysis, but its quality is easily destructed during storage. Sea cucumber ( Stichopus japonicus) is one of the most luxurious and nutritious seafoods in Asia.