With the launching of the space shuttle on May 31, vaccine research may get a boost. Salmonella has been shown to have increased virulence in space, but it loses virulence during research here on Earth. This has been an obstacle for developing a vaccine against the bacterium. Now, researchers at the International Space Station may be able to produce a vaccine strain in space for use in human vaccines on Earth. They're starting by testing several strains, which were onboard Discovery on Saturday.
Now if they can only make space travel simpler, and re-entry safer, this may have promise.
Salmonella vaccine lift-off at The Scientist