This is an interesting article but it leaves out one significant piece of information for the reader. That is, how did Thucydides describe the plague and how does that correspond and differ from our current understanding of typhoid fever? Also, what were some of the other theories and, based on what evidence were those theories put forth? Talk about leaving the reader guessing!
Thucydides gives a very detailed description of the symptoms, probably accurate since he had it. I can recall reading some time ago, that his description did not match any known disease exactly. I guess, as the article states, the disease could have mutated.