History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
Indeed the character of the disease proved such that it baffles description, the violence of the attack being in each case too great for human nature to endure, while in one way in particular it showed plainly that it was different from any of the familiar diseases: the birds, namely, and the fourfooted animals, which usually feed upon human bodies either would not now come near them, though many lay unburied, or died if they tasted of them.
The evidence for this is that birds of this kind became noticeably scarce, and they were no longer to be seen either about the bodies or anywhere else; while the dogs gave a still better opportunity to observe what happened, because they live with man.
Such, then, was the general nature of the disease; for I pass over many of the unusual symptoms, since it chanced to affect one man differently as compared with another. And while the plague lasted there were none of the usual complaints, though if any did occur it ended in this. Sometimes death was due to neglect, but sometimes it occurred in spite of careful nursing.
And no one remedy was found, I may say, which was sure to bring relief to those applying it—for what helped one man hurt another—