Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Spillover of avian A(H5N1) influenza virus to mammals may favour adaptation to these new hosts. Air sampling of infected ferrets shows that recent A(H5N1) strains, including one from a human case linked to the US cattle outbreak, are efficiently expelled into the air.
The stable integration of a 192 kb plasmid into the chromosome of Clostridium acetobutylicum by a synthetic biology approach enables continuous production of n-butanol.
