Figure 2

Dynamic epidemic curves (daily new cases) within 3 weeks before the view date. (a) The epidemic curves estimated on August 1^st, 2006. (b) The epidemic curves estimated on September 1^st, 2006. (c) The epidemic curves estimated on October 1^st, 2006. (d) The epidemic curves estimated on November 1^st, 2006. (e) The epidemic curves estimated on December 1^st, 2006. (f) The epidemic curves estimated on January 1^st, 2007. Each point of the curves was calculated as the date changed. See text for details.