Affiliations

• ¹ Center for Communicable Disease Dynamics, Harvard T.H. Chan School of Public Health, Boston, MA 02115 USA. cbuckee@hsph.harvard.edu.
• ² Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA.
• ³ Emergency Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611.
• ⁴ NetHope, Inc., Fairfax, VA 22030, USA.
• ⁵ Institute for Quantitative Social Science, Harvard University, Boston, MA 02138, USA.
• ⁶ Harvard Data Science Initiative, Harvard University, Boston, MA 02138, USA.
• ⁷ Berkman Klein Center for Internet and Society, Harvard University Harvard Law School, Boston, MA 02138, USA.
• ⁸ Center for Communicable Disease Dynamics, Harvard T.H. Chan School of Public Health, Boston, MA 02115 USA.
• ⁹ Princeton University, Princeton, NJ 08540, USA.
• ¹⁰ Center for Inference and Dynamics of Infectious Diseases, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.
• ¹¹ University of Washington, Seattle, WA 98195, USA.
• ¹² Department of Zoology, University of Oxford, Oxford OX1 3SZ, UK.
• ¹³ Boston Children's Hospital, Boston, MA 02115, USA.
• ¹⁴ The University of Texas at Austin, Austin, TX 78702, USA.
• ¹⁵ Department of Biological Sciences and Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN 46556, USA.
• ¹⁶ Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA.
• ¹⁷ Network Science Institute, Northeastern University, Boston, MA 02115, USA.
• ¹⁸ Fogarty International Center, National Institutes of Health, Bethesda, MD 20892, USA.
• ¹⁹ Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.
• ²⁰ Direct Relief, Santa Barbara, CA 93117, USA.