Looks like the original, open access, paper can be found here: http://mbio.asm.org/content/2/1/e00005-11.full http://mbio.asm.org/content/2/1/e00005-11.full I

Looks like the original, open access, paper can be found here: http://mbio.asm.org/content/2/1/e00005-11.full http://mbio.asm.org/content/2/1/e00005-11.full I'd guess the obvious first question is, is this a sequencing artifact? I wouldn't like to judge, but it looks like they are alive to the possibility (different isolates etc.)