I’m going to get really nerdy and geeky here, and point out that technically, the part you highlighted in red, is using the wrong terminology.
The strain is sort of like “breed” in higher animals. There are 5 strains of Ebola; their genomes are from 30 to 40% different from each other.
The Ebola outbreak in Guinea is only 1.5 to 3% different genetically than Ebola Zaire seen in other outbreaks. By definition, therefore, it is Ebola Zaire. The small genetic differences make it a separate clade, not strain. A clade is a minor variant of an existing virus.
Thanks for the warning.