The recurring typhus, whose synonyms are so numerous, it is a disease that endemic and epidemic exacerbations character, cruelly whips the vast territory of Peru, in many localities causing mass casualties. The greatest tribute is for the indigenous people of our mountains, which, as we know, is more accessible to contagion, given their inveterate habits of uncleanliness.

We will just briefly indicate the gross changes, which we have been possible to find in the autopsy of one fatal case count in our statistics Lazaretto La Mar. The microscopic lesions have studied many authors among which we can mention BESANCON, PONFIK, etc.