Abstract:Background. This paper presents, for the first time, the
Epidemic Volatility Index (EVI), a conceptually simple, early warning
tool for emerging epidemic waves.
Methods. EVI is based on the volatility of the newly reported
cases per unit of time, ideally per day, and issues an early warning
when the rate of the volatility change exceeds a threshold.
Results. Results from the COVID-19 epidemic in Italy and New
York are presented here, while daily updated predictions for all world
countries and each of t… Show more
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