The recent epidemic of Coronavirus (COVID-19) that started in China has already
been "exported" to more than 140 countries in all the continents, evolving in most
of them by local spreading. In this contribution we analyze the trends of the cases
reported in all the Chinese provinces, as well as in some countries that, until March
15th, 2020, have more than 500 cases reported. Notably and differently from other
epidemics, the provinces did not show an exponential phase. The data available at
the Johns Hopkins University site seem to fit well an algebraic sub-exponential
growing behavior as was pointed out recently. All the provinces show a clear and
consistent pattern of slowing down with growing exponent going nearly zero, so it can
be said that the epidemic was contained in China. On the other side, the more recent
spread in countries like, Italy, Iran, and Spain show a clear exponential growth, as
well as other European countries. Even more recently, US -which was one of
the first countries to have an individual infected outside China (Jan 21st, 2020)-
seems to follow the same path. We calculate the exponential growth of the most
affected countries, showing the evolution along time after the first local case. We
identify clearly different patterns in the analyzed data and we give interpretations
and possible explanations for them. The analysis and conclusions of our study can
help countries that, after importing some cases, are not yet in the local spreading
phase, or have just started
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