Eric Walker added 1863–1875 cholera pandemic - Wikipedia to 1863 Fourth cholera pandemic

Eric Walker added How Data Became One of the Most Powerful Tools to Fight an Epidemic - The New York Times to a number of topics

Eric Walker added 1863–1875 cholera pandemic - Wikipedia and How Data Became One of the Most Powerful Tools to Fight an Epidemic - The New York Times to Fourth cholera pandemic, and added Fourth cholera pandemic to Cholera and Outbreaks, epidemics and pandemics

Eric Walker added a number of topics and a number of links to Cholera, and added Cholera to Infectious disease (ID)

Eric Walker added a number of topics and a number of links to Outbreaks, epidemics and pandemics, and added Outbreaks, epidemics and pandemics to Infectious disease (ID)