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.
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—
and no constitution, as it proved, was of itself sufficient against it, whether as regards physical strength or weakness,[*](i.e. no constitution was of itself strong enough to resist or weak enough to escape the attacks (Jowett).) but it carried off all without distinction, even those tended with all medical care.