Global health officials are raising alarms about an outbreak of a rare species of Ebola virus spreading in the Democratic Republic of Congo and Uganda. The World Health Organization said it suspects the outbreak of Bundibugyo virus, a form of Ebola, has caused over 500 infections, including over 130 deaths. There have only been two previously documented outbreaks of this species of the virus. Because it is so rare, scientists have had limited opportunities to study it. What is the Bundibugyo