Although it is not spread through human contact, Francisella tularensis is one of the most infectious pathogenic bacteria known to science—so virulent, in fact, that it is considered a serious potential bioterrorist threat. It is thought that humans can contract respiratory tularemia, or rabbit fever—a rare and deadly disease—by inhaling as few as 10 airborne organisms.
Click here for original story, Bacterium causing rabbit fever remains virulent for months in cold water
Source: Phys.org