The Coronavirus Disease 2019 (COVID-19) continues to be a constant threat in 2022 and is important to design appropriate vaccination campaigns to face next pandemic impacts driven by new variants. This study develops a Machine Learning experiment that shows, between countries, a rapid reduction...

Adding to the emerging body of research related to the current coronavirus crisis, this paper studies the impact of disease epidemics on the worldwide prevalence of the shadow or the underground economy. The informal sector undermines compliance with government regulations and lowers tax...

How has government healthcare spending prepared countries for tackling the COVID19 pandemic? Arguably, spending is the primary policy tool of governments in providing effective health. We argue that the effectiveness of spending in reducing COVID deaths is conditional on the existence of...

Mit dem Ausbruch der Schweinegrippe - offiziell jetzt A(H1N1) - in Mexiko erscheint am Horizont erneut die Gefahr einer Grippepandemie, die ähnlich wie die Pandemien des 20. Jahrhunderts (u. a. die Spanische Grippe 1918-1919) Hunderttausende oder gar Millionen Opfer fordern könnte. In den...