NASA has discovered 13 strains of drug-resistant Enterobacter bugandensis on the International Space Station.

The bacteria exhibit increased drug resistance and the ability to survive in harsh space conditions, including microgravity and elevated carbon dioxide levels.

The health impact of the bacteria on astronauts is currently unclear, but preventative measures have been implemented.

Enterobacter bugandensis is linked to the human gut and can cause infections, particularly in infants.

Although mutations in the bacteria may not significantly affect Earth's population, there are recommendations for NASA to form an 'astrobiodefence' to prepare for future space station projects.