ABSTRACT
Production fragmentation across multiple regions can result in a regional shock propagating along value chains to a wider array of regions. We propose a methodological framework to measure the economic exposure to regional value chain disruptions due to city lockdown during Covid-19. The exposure index is evaluated by applying a hypothetical extraction method to a regionally extended inter-country input-output framework incorporating China's interregional input-output table. Our methodology can be adapted to conduct disaster impact analyses at city, state and country levels. It provides a tool for the immediate assessment of the economic risks of value chain disruptions, enabling quick policy responses.
ABSTRACT
BACKGROUND: Data have not been reported to explore the relation between COVID-19 severity and BCG vaccination status at the individual patient level. METHODS: Taiwan has a nationwide neonatal BCG vaccination program that was launched in 1965. The Taiwan Centers for Disease Control established a web-based National Immunization Information System (NISS) in 2003 and included all citizens' BCG vaccination records in NISS for those born after 1985. We identified COVID-19 Taiwanese patients born after 1985 between 21 January and 19 March 2021. Study participants were further classified into ages 4-24 years (birth year 1996-2016) and 25-33 years (birth year 1986-1995). We described their clinical syndrome defined by the World Health Organization and examined the relation between the COVID-19 severity and BCG vaccination status. RESULTS: In the 4-24 age group, among 138 BCG vaccinated individuals, 80.4% were asymptomatic or had mild disease, while 17.4% had moderate disease, 1.5% had severe disease, and 0.7% had acute respiratory distress syndrome but none of them died. In contrast, all 6 BCG unvaccinated individuals in this age group experienced mild illness. In the 25-33 age group, moderate disease occurred in 14.2% and severe disease occurred in 0.9% of the 106 patients without neonatal BCG vaccination records, as compared to 19.2% had moderate disease and none had severe or critical disease of the 78 patients with neonatal BCG vaccination records. CONCLUSIONS: Our finding indicated that BCG immunization might not relate to COVID-19 severity in the young population.
ABSTRACT
To explore the relationship between social support and sleep quality of community workers in Wuhan during the coronavirus disease 2019 (the COVID-19 infection epidemic), this research constructed a mediating effect model to explore the mediating psychological mechanism of social support influencing sleep quality of front-line community workers. A total of 500 front-line community workers in Wuhan were investigated. We used the perceived social support scale (PSSS), the Connor-Davidson Resilience Scale (CD-RISC), the perceived stress scale (PSS), and the Pittsburgh sleep quality index (PSQI) to measure social support, psychological resilience, perceived stress and sleep quality. Specifically, the higher the PSQI, the worse the sleep quality. Pearson correlation structural equation model was used to analyze the relationship between these factors. The results showed that: (1) There was a significant negative correlation between social support, psychological resilience, and perceived stress of community workers and PSQI, that means, the higher the level of social support, psychological resilience, and perceived stress, the higher the sleep quality. (2) Social support positively predicted psychological resilience and perceived stress, and perceived stress negatively predicted PSQI. (3) Social support can affect sleep quality through the mediating role of psychological resilience and perceived stress, and the mediating role includes two paths: the single mediating role of perceived stress and the chain mediating role of psychological resilience-perceived stress. (4) Gender moderates the relationship between social support and perceived stress, and the influence of social support on perceived stress of women is higher than that of men. Gender moderates the relationship between psychological resilience and PSQI, and only women's psychological resilience had a negatively predictive effect on PSQI, while men did not, which means that psychological resilience of female frontline community workers can positively predict sleep quality. This research reveals the relationship between social support and sleep quality and its mechanism and verifies that social support can indirectly affect physical health through psychological resilience and perceived stress. It provides reference suggestions and intervention guidance for improving the sleep quality of community workers.