The US Center for Disease Control (CDC) has a good introductory page on the Ebola virus disease at https://www.cdc.gov/vhf/ebola/history/summaries.html The reference application in phylogenetics is Joe Felsenstein's Phylip, which can be found at http://evolution.genetics.washington.edu/phylip.html We will use the Nexus and Newick formats in future recipes (http://evolution.genetics.washington.edu/phylip/newicktree.html), but also check out the PhyloXML format (http://en.wikipedia.org/wiki/PhyloXML)