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Digital Epidemiology

Figure 1

Map generated by more than 250 million public tweets (collected from Twitter.com) with high-resolution location information, broadcast between March 2011 and January 2012.

Inset shows greater Los Angeles area. Brightness of color corresponds to geographic density of tweets.

Figure 1

doi: https://doi.org/10.1371/journal.pcbi.1002616.g001