According to MSNBC, thanks to experiments on the International Space Station:
A series of experiments conducted aboard the International Space Station may soon lead to a vaccine against food poisoning from salmonella bacteria.
Researchers are analyzing a batch of the bacteria brought back by the shuttle Discovery crew last month. Earlier studies showed salmonella can become more virulent in weightlessness; further investigations proved its virulence can be controlled, toggled on and off like a switch.
Now two groups are working to develop compounds for a salmonella vaccine, said space station program scientist Julie Robinson.
The article goes on to point out:
The salmonella investigations are the most mature of dozens of experiments that have been conducted aboard the space station, which so far has led to 162 publications in science research journals, Robinson said.
In case you were wondering what the space station was good for.