Isolation and Phylogenetic Characterization of Ebola Viruses Causing Different Outbreaks in Gabon
1997

Ebola Virus Outbreaks in Gabon

Sample size: 43 publication Evidence: moderate

Author Information

Author(s): Marie-Claude Georges-Courbot, Anthony Sanchez, Chang-Yong Lu, Sylvain Baize, Eric Leroy, Joseph Lansout-Soukate, Carole Tevi-Benissan, Alain J. Georges, Sam G. Trappier, Sherif R. Zaki, Robert Swanepoel, Patricia A. Leman, Pierre E. Rollin, Clarence J. Peters, Stuart T. Nichol, Thomas G. Ksiazek

Primary Institution: Centre International de Recherches Medicales

Hypothesis

Each of the three outbreaks of Ebola in Gabon represents an independent emergence of a different Ebola virus of the Zaire subtype.

Conclusion

The study found that the three Ebola outbreaks in Gabon were caused by distinct viruses, each emerging independently.

Supporting Evidence

  • Three independent outbreaks of Ebola virus hemorrhagic fever occurred in Gabon from 1994 to 1996.
  • Each outbreak was associated with distinct virus sequences.
  • Laboratory-confirmed cases were reported during the outbreaks.

Takeaway

There were three different Ebola outbreaks in Gabon, and each one was caused by a different virus.

Methodology

Nucleotide sequence analysis of the glycoprotein gene of Ebola virus isolates from human samples collected during the outbreaks.

Limitations

The study was limited by the small number of isolates tested.

Participant Demographics

Inhabitants of northeastern Gabon, including gold-panners and villagers.

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