Search volume for ‘Ebola’ among GHD UTD users and general public. Search volume for ‘Ebola’ among GHD UTD users and general public. Cases: number of confirmed cases in Guinea, Sierra Leone and Liberia. Source: US CDC. Google: normalised worldwide search volume of the term ‘Ebola’ on Google. Source: Google Trends. UpToDate: normalised worldwide searches containing the word ‘Ebola’ among GHD UTD subscription recipients. GHD UTD, Global Health Delivery UpToDate donation programme; US CDC, US Centers for Disease Control. Yannis K Valtis et al. BMJ Glob Health 2016;1:e000041 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/