Germs in space, come back more deadly.
The germ, Salmonella, best known as a culprit of food poisoning was sent along with scientists on the Space Shuttle STS-115 in September 2006, to see how space travel affects germs.
Arizona State University science team has shown for the first time that space makes germs more deadly. http://www.azcentral.com/arizonarepublic/news/articles/0925spacebugs0925.html
They did the test by feeding mice the space germs. They found out that the mice were three times more likely to get sick from the germs in space then the mice fed on Earth.
Cheryl Nickerson, an associate professor at the Center for Infectious Diseases and Vaccinology at Arizona State University, reports the results of the salmonella study: Researchers found 167 genes changed in the salmonella when it went into space. Results were in today's edition of Proceedings of the National Academy of Sciences.
Nickerson said that some germs may become stronger and some may become weaker on spaceflight.
Studies have also shown that astronauts immune systems become weaker in space.
Researchers tested the germs in hopes to finding a vaccine to treat or prevent outbreaks of salmonella and other infectious diseases on Earth
"These bugs can sense where they are by changes in their environment," Nickerson said. "The minute they sense a different environment, they change their genetic machinery so they can survive."