And yet even the bad ones are important, because without them your immune system can't keep building immunity. If you have an immune system deficiency then by a

And yet even the bad ones are important, because without them your immune system can't keep building immunity. If you have an immune system deficiency then by all-means doing research on this is important, but there's really no point in trying to get rid of all the "bad" germs just to get rid of them, because eventually that will weaken your immune system.