COVID-19 has a significant impact on public health and poses a challenge to medical staffs, especially to front-line medical staffs who are exposed to direct contact with patients. To understand the psychological stress status of medical staffs during the outbreak of COVID-19. Random sample questionnaire survey was conducted among 2110 medical staffs and 2158 college students in all provinces of china through a questionnaire which was compiled and completed through the Questionnaire Star platform relying on Wechat, QQ and other social software. The differences in psychological stress status of different groups were compared through This article is protected by copyright. All rights reserved. Accepted Articlethe analysis of the questionnaire. Results revealed that in all provinces of china, medical staffs scored significantly higher on all items of psychological stress than college students(P<0.001). In Wuhan, medical staff scored significantly higher than college students in all items of psychological stress(P<0.001). While for medical staff, the group in Wuhan area scored significantly higher than the group outside Wuhan on "Thought of being in danger", "The possibility of self-illness", "Worrying about family infection"(P<0.05), "Poor sleep quality", "Needing psychological guidance" and "Worrying about being infected"(P<0.01) items in the psychological stress questionnaire, and in the item of "Confidence in the victory of the epidemic", the group in Wuhan area scored significantly lower than the group in the area outside Wuhan(P<0.05). The emotion, cognition, physical and mental response of front-line medical staff showed obvious "exposure effect", and psychological crisis intervention strategy can be helpful.

Highlights Aim: Explore the emotional "inflection point". Participants: More than 30,000 data on college students' emotional changes. Method: Questionnaire measurement and AI data analysis with a large dynamic queue designs. Results: "inflection point" in emotions in two different time periods after the outbreak (January and February), "typhoon eye effect" and "exposure effect" in different regions (within and outside Hubei province).

Background: Since the outbreak of COVID-19, physical and psychological harm has been spreading across the global population alongside the spread of the virus. Currently, the novel coronavirus has spread to most countries in the world, and its impact on the public is also increasing. As a high-risk group in direct contact with the virus, medical workers should be monitored, and their mental health deserves extensive attention. The aim of this study was to explore the mental health of medical workers facing the novel coronavirus and the main factors affecting it. Methods: The present cross-sectional study including 2,100 eligible individuals from 1,050 hospitals in China was conducted through the network platform powered by www. wjx.cn, a platform providing functions equivalent to Amazon Mechanical Turk. We used a self-designed questionnaire to collect demographic information and data on mental states, including gender, age (years), educational level, job rank, body and mind reaction, cognition of risk, and the judgment of the epidemic situation. Independent samples t-tests and one-way (ANOVA) analysis were carried out to compare the differences in the mental reactions according to the demographic and psychological states of the participants. Results: There were 502 males (23.9%) and 1,598 females (76.1%). The participants reported feeling calm (39.1%), tense (63.0%), scared (31.4%), angry (18.8%), sad (49.0%), afraid (34.7%), optimistic (5.1%), impressed (65.0%), and confident (31.1%) during the epidemic. At the same time, the psychological stress responses of medical staff were significantly different according to the levels of exposure in their environments, duration and personal experience. Conclusions: Prolonged exposure to the virus and intense work are detrimental to the mental health of medical care personnel. It is necessary to adjust work conditions and intensity according to workers' mental state flexibly and systematically.

Background: The COVID-19 outbreak in Wuhan, Hubei, has brought serious consequences to the lives and mental health of people and has induced psychological stress and affected behavior.Methods: This study used self-designed questionnaires and SPSS to analyze the psychological and behavioral responses of people in different regions during the COVID-19 pandemic and to check for the presence of “psychological typhoon eye” (PTE) effects. The questionnaires adopted three measurement subscales, namely, the risk cognitive subscale, stress response subscale, and behavioral response subscale, and these were administered online (www.wjx.cn) to investigate the psychological and behavioral conduct of respondents from three areas that have been affected by COVID-19 to varying degrees. Exploratory factor analysis and principal component analysis were conducted to explore the factorial structure of these subscales, and confirmatory factor analysis was conducted to explore the structural validity of the questionnaires. The analysis results were used to build a revised 18-item questionnaire which validity was evaluated via ANOVA and LSD.Results: Results confirm the presence of PTE in the research areas during the onset of the COVID-19 outbreak and highlight some significant differences in the cognition and emotions of the residents in these areas. PTE affected the cognition, emotions, and cognitive and emotional responses of the respondents but did not affect their behavioral responses.Conclusion: The findings underscore the urgency of providing sustainable mental health care services across different areas during the COVID-19 outbreak. The residents of those areas worst hit by the pandemic, who may not have taken the situation seriously, require emotional guidance the most. Meanwhile, the residents of other areas, who showed the most negative psychological reactions to the pandemic, require a sense of security, a timely “disconnection” from negative information, an accurate cognition of stress, and an acceptance of self-responses.

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