The Jerusalem latrine was found in the Christian Quarter of the Old City, close to the Church of the Holy Sepulchre in 1996 during excavations of a cesspool in the courtyard of a Spanish school. A microscopic fish tapeworm egg found in the medieval latrine at Riga. (photo credit: IVY YEH) From the bowels of history comes a study published this week in the journal Philosophical Transactions of the Royal Society B at Cambridge University in England, which details a first attempt at using the methods of ancient bacterial detection, pioneered in studies of past epidemics, to characterize the microbial...