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Analyses based on limited sequence data of Ebola virus samples from the outbreak that started in West Africa in 2013 have suggested that the virus is mutating twice as fast as previously observed. However, a new analysis of additional data that provide a longer view of the virus’ evolution indicates that the mutation rate is consistent with estimates from past Central African outbreaks (Hoenen T et al. Science. doi:10.1126/science.aaa5646 [published online March 26, 2015]).
Hampton T. Study Reveals Consistent Ebola Virus Mutation Rate Between Outbreaks. JAMA. 2015;313(17):1703. doi:10.1001/jama.2015.4095