The 14-day incidence rate per 100,000 inhabitants is the official indicator through which WHO evaluates the speed of the spread of the Covid-19 epidemic in the various countries of the world.
In general, the incidence is the number of new cases observed. It can be daily, monthly, etc. In this case, W.H.O. considers the new cases observed in the last two weeks and expresses them per 100,000 inhabitants, thus removing the population size effect. Being represented in units of time (14 days), this ratio is called "rate," as it describes the variation in the number of new cases as time varies.
The graph shows this speed indicator's trend from the beginning of the epidemic to today for 30 countries: when the indicator grows, the epidemic accelerates. When it decreases, the epidemic slows down.
At the moment, the ranking of these 30 countries is as follows.
Italy occupies the 13th position with 39 new cases every two weeks per 100,000 inhabitants. The worst situation is that of Israel, with the speed indicator equal to 883.
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NB: the zeros in the ranking are approximations of decimal values
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