The plague also causes religious uncertainty and…
429 BCE to 418 BCE
Since the disease strikes without regard to a person's piety toward the gods, people feel abandoned by the gods and there seems to be no benefit to worshiping them.
The temples themselves are sites of great misery, as refugees from the Athenian countryside have been forced to find accommodation in the temples.
Soon the sacred buildings are filled with the dead and dying.
The Athenians point to the plague as evidence that the gods favor Sparta, and this is supported by an oracle that Apollo himself (the god of disease and medicine) would fight for Sparta if they fought with all their might.
An earlier oracle had warned that "A Dorian [Spartan] war will come, and bring a pestilence with it".
Thucydides is skeptical of these conclusions and believes that people are simply being superstitious.
He relies upon the prevailing medical theory of the day, Hippocratic theory, and strives to gather evidence through direct observation.
He notes that carrion-eating birds and animals disappear as a result, though he leaves it an open question whether they died after eating the corpses or refused to eat them and were driven away.