Bacteria from Outerspace far more deadly!

Salmonella bacteria grown on the space shuttle displayed unusual genetic activity, becoming much more virulent.A new study shows that its effects on microorganisms may be just as dramatic: Salmonella grown onboard the space shuttle was many times deadlier than its terrestrial counterparts. The study suggests that NASA and other space agencies may need to worry that long manned missions will increase the virulence of microorganisms that astronauts inevitably carry with them. It has also given microbiologists insights into Salmonella that may lead to new therapies for infections on Earth.