Fecal contamination is a sure way to catch something, if one of of the two people has a health issue. Less so for the receiver than the giver, but both are at risk from the other. If she rims more than one person the risk is magnified.
It is city politics to do this to show they are doing their jobs, especially just before an election. The newspapers are glad to sensationalize the story because they are dying a slow painful death.
Sorry to burst you bubble on hobbying in Germany, but they do not like Auchlanders ( outsiders ) in their country and they really resent it when you go to their sex clubs. I have been to German and tried their sex clubs and hostess clubs and have found that no Germans are treated second class.