An outbreak of coronavirus disease in Wuhan, China caused by SARS-CoV-2 has led to a serious epidemic in China and other countries, resulting in worldwide concern. With active efforts of prevention and control, more and more patients are being discharged. However, how to manage these patients normatively is still challenging. This paper reports an asymptomatic discharged patient with COVID-19 who retested positive for SARS-CoV-2, which arouses concern regarding the present discharge standards of COVID-19.

Background: The coronavirus disease 2019 pandemic has negatively affected the training of general surgery chief residents during the last trimester of their residency. Our goal was to evaluate the educational concerns of graduating general surgery chief residents during the coronavirus disease 2019 pandemic. Methods: An anonymous web-based survey was distributed between March 31 and April 7, 2020 to all current general surgery chief residents from 6 academic medical centers in Boston, Massachusetts. Interviews were also conducted with attending surgeons from participating institutions. Results: A total of 24 of 39 general surgery chief residents participated in our survey (61.5% response rate). General surgery chief residents were most concerned about the potential delay in the date of board examinations, followed by not feeling adequately prepared for the board examinations and a possible delay in the graduation date. Whereas not having enough cases to feel ready for fellowship or job and not achieving a sufficient number of cases to meet the requirements for graduation were only moderately concerning to chief residents, attending surgeons stressed a greater importance on the loss of the operative experience as nearly all (93.3%) of them suggested a personalized approach for additional general surgery training during fellowship or job onboarding. Conclusion: In addition to the dramatic impact on public health, the coronavirus disease 2019 outbreak has also caused unprecedented changes to surgical education. Therefore, creative interventions are needed to help general surgery chief residents successfully transition into the next phase of their surgical career.

Sulfide electrolytes with high ionic conductivity hold great promise for all-solid-state lithium batteries. However, the parasitic redox reactions between sulfide electrolyte and Li metal result in interfacial instability and rapid decline of the battery performance. Herein, a redox-resistible Li 6 PS 5 Cl (LPSC) electrolyte is created by regulating the electron distribution in LPSC with Mg and F incorporation. The introduction of Mg triggers the electron agglomeration around S atom, inhibiting the electron acceptance from Li, and F generates the self-limiting interface, which hinders the redox reactions between LPSC and Li metal. This redox-resistible Li 6 PS 5 Cl-MgF 2 electrolyte therefore presents a high critical current density (2.3 times that of pristine electrolyte). The LiCoO 2 /Li 6 PS 5 Cl-MgF 2 /Li cell shows an outstanding cycling stability (93.3 % @100 cycles at 0.2 C). This study highlights the electronic structure modulation to address redox issues on sulfide-based lithium batteries.