Searching for the peak: Google Trends and the first COVID-19 wave in Italy Online publication date: Thu, 20-Oct-2022
by Paolo Brunori; Giuliano Resce; Laura Serlenga
International Journal of Computational Economics and Econometrics (IJCEE), Vol. 12, No. 4, 2022
Abstract: One of the difficulties faced by policymakers during the COVID-19 outbreak in Italy was the monitoring of the virus diffusion. Due to changes in the criteria and insufficient resources to test all suspected cases, the number of 'confirmed infected' rapidly proved to be unreliably reported by official statistics. We explore the possibility of using information obtained from Google Trends to predict the evolution of the epidemic. Following the most recent developments on the statistical analysis of longitudinal data, we estimate a dynamic heterogeneous panel. This approach allows to takes into account the presence of common shocks and unobserved components in the error term both likely to occur in this context. We find that Google queries contain useful information to predict number patients admitted to the intensive care units, number of deaths and excess mortality in Italian regions.
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