4 In October and November 2014, the virus goes from Guinea to Mali
3 June 2014: type B travels back into Guinea, where it spreads rapidly
2 Virus A mutates into type B and is exported to Sierra Leone and Liberia at end of May 2014
1 Virus A emerges in Guinea between December 2013 and February 2014. It spreads locally and nearly dies out around July 2014
Tonkolili
Kissidougou,
Gueckedou,
Macenta
Sierra
Leone
Outbreak centre
Mali
Guinea
Liberia
Cote
d’Ivoire
4 In October and November 2014, the virus goes from Guinea to Mali
3 June 2014: type B travels back into Guinea, where it spreads rapidly
2 Virus A mutates into type B and is exported to Sierra Leone and Liberia at end of May 2014
1 Virus A emerges in Guinea between December 2013 and February 2014. It spreads locally and nearly dies out around July 2014
Tonkolili
Kissidougou,
Gueckedou,
Macenta
Sierra
Leone
Outbreak centre
Mali
Guinea
Liberia
4 In October and November 2014, the virus goes from Guinea to Mali
3 June 2014: type B travels back into Guinea, where it spreads rapidly
2 Virus A mutates into type B and is exported to Sierra Leone and Liberia at end of May 2014
1 Virus A emerges in Guinea between December 2013 and February 2014. It spreads locally and nearly dies out around July 2014
Tonkolili
Kissidougou,
Gueckedou,
Macenta
Sierra
Leone
Outbreak centre
Mali
Guinea
Cote
d’Ivoire
Liberia
Cote
d’Ivoire
4 In October and November 2014, the virus goes from Guinea to Mali
3 June 2014: type B travels back into Guinea, where it spreads rapidly
2 Virus A mutates into type B and is exported to Sierra Leone and Liberia at end of May 2014
1 Virus A emerges in Guinea between December 2013 and February 2014. It spreads locally and nearly dies out around July 2014
Tonkolili
Kissidougou,
Gueckedou,
Macenta
Sierra
Leone
Outbreak centre
Mali
Guinea
Liberia