Tobacco may cure norovirus.

From Yahoo! News:

Scientists have developed a vaccine for the common viral infection norovirus from a novel source: a tobacco plant.

The new vaccine was "manufactured" in a tobacco plant using a bioengineered plant virus.

This plant biotechnology opens the door to faster, more inexpensive ways to bring vaccines to the public quickly, especially in times when viruses mutate into unpredictable new strains, said Charles Arntzen, who reported on the vaccine at the American Chemical Society annual meeting, in Washingtopn, D.C.

[...] The new vaccine for norovirus is a step in that direction. Norovirus is a dreaded cause of diarrhea and vomiting that may be the second most common viral infection in the United States, behind the flu.