where do bacteria hang out to not every day surrounding. lung which species. but how many germs actually stick to our home. checked out. this is louisa our test subject will follow her around for a morning. what kinds of bacteria are to be found on louise's hands to begin with the petri dish is used to collect the samples. professor brian waters from the institute for medical microbiology and hygiene at philips university of marburg will be analyzing the samples for us. so what did he find right after louisa got up . we found lots of germs that are typically found on the hand like strains of micro caucus and stuff. we would expect to clean washed and to yield about fifty colonies on a dish like this and this kind of one up at louisa had three hundred so quite a few times more than