How many bacteria are found on the human hand?
Millions! But don’t worry – very few of them are ‘bad’ bacteria – bacteria that will give you infections. On my personal rant – all these tv programmes that say there’s more bacteria on your chopping board than your toilet seat and go round checking the number of bacteria in different parts of peoples homes to check they’re cleaning properly etc. etc. are really invalid – bacteria can multiply extreemely quickly – just one could make you sick (though if you get many at once they will be more difficult for your immune system to deal with therefore are more likely to make you sick), so the number is irrelivant – it’s the type and diversity of bacteria that matter.
