Academic journal article The Science Teacher

Ebola Older Than We Thought

Academic journal article The Science Teacher

Ebola Older Than We Thought

Article excerpt

A new study is helping to rewrite Ebola's family history. The research shows that filoviruses--a family to which Ebola and its similarly lethal relative, Marburg, belong--are at least 16-23 million years old.

Filoviruses likely existed in the Miocene epoch, and at that time, the evolutionary lines leading to Ebola and Marburg had already diverged, the study concludes.

The research, published in the journal PeerJ, adds to scientists' developing knowledge about known filoviruses, which experts once believed came into being some 10,000 years ago, coinciding with the rise of agriculture. The new study pushes back the family's age to the time when great apes arose.

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"Filoviruses are far more ancient than previously thought," says lead researcher Derek Taylor, a biology professor at the University at Buffalo. "These things have been interacting with mammals for a long time, several million years."

According to the article, knowing more about Ebola and Marburg's comparative evolution could "affect design of vaccines and programs that identify emerging pathogens."

The research does not address the age of the modern-day Ebola virus. Instead, it shows that Ebola and Marburg are each members of ancient evolutionary lines and that these two viruses last shared a common ancestor sometime before 16-23 million years ago. …

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