http://www.idbsu.edu/courses/hy101/peloponn/06.htmThe Peloponnesian War - Page 6 of 17
In turn, Athenian ships raided all along the Peloponnesian coast. The aristocrats didn't much like seeing their estates burn, but everyone had to admit that Pericles' strategy looked to be effective.
There were flaws in Percles' plan, however. For one thing, his strategy protected Athens well, but it proved less effective in attacking Sparta. More immediately, though, it soon appeared that Pericles had not reckoned the effect of stuffing thousands more people inside the city.
Within two years, plague broke out in Athens and revisited regularly. One of its early victims was Pericles himself.