Complex sentence: A total of 318 cases and 280 deaths (an 88% fatality rate) resulted from this outbreak, which, along with an outbreak in Sudan that had begun a few weeks previously, are the first outbreaks of Ebola ever recorded.
Split into simpler sentences: A total of 318 cases and 280 deaths (an 88% fatality rate) resulted from this outbreak. This outbreak, along with an outbreak in Sudan that had begun a few weeks previously, are the first outbreaks of Ebola ever recorded.