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. 2011 Jul 1;6(7):e21197. doi: 10.1371/journal.pone.0021197

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Wang et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) The Zipf-plots of the normalized probability-rank distributions of the cumulated confirmed number of every infected country at several given date sampled about every two weeks, data provided by the WHO. (B) The Zipf-plots of at several given data sampled about every two weeks, data provided by the CDC. (C) Temporal evolution of the estimated exponent of the normalized distribution . (D) Temporal evolution of the estimated exponent of the normalized distribution of the period after May 15th. (E) The sublinear relation between the number of infected countries and the cumulative number of global confirmed cases , data collected by the WHO. (F) The sublinear relation between the number of infected states and the cumulative number of national confirmed cases , data collected by the CDC. The shaded areas in the figures (C,E,F) corresponds to their different evolution stages, respectively.

Inline graphic — (A) The Zipf-plots of the normalized probability-rank distributions of the cumulated confirmed number of every infected country at several given date sampled about every two weeks, data provided by the WHO. (B) The Zipf-plots of at several given data sampled about every two weeks, data provided by the CDC. (C) Temporal evolution of the estimated exponent of the normalized distribution . (D) Temporal evolution of the estimated exponent of the normalized distribution of the period after May 15th. (E) The sublinear relation between the number of infected countries and the cumulative number of global confirmed cases , data collected by the WHO. (F) The sublinear relation between the number of infected states and the cumulative number of national confirmed cases , data collected by the CDC. The shaded areas in the figures (C,E,F) corresponds to their different evolution stages, respectively.