The extinct influenza virus that caused the worst flu pandemic in history has been recreated from fragments of avian flu found in wild ducks in a controversial experiment
the scientists rebuilt the entire virus so that it was 97 per cent identical to the 1918 strain, known from viruses recovered from frozen corpses, according to the study published in the journal Cell Host and Microbe.
http://www.independent.co.uk/news/science/american-scientists-controversially-recreate-deadly-spanish-flu-virus-9529707.html
the scientists rebuilt the entire virus so that it was 97 per cent identical to the 1918 strain, known from viruses recovered from frozen corpses, according to the study published in the journal Cell Host and Microbe.
http://www.independent.co.uk/news/science/american-scientists-controversially-recreate-deadly-spanish-flu-virus-9529707.html