Talk:Summer Rose/@comment-10380701-20150530000357/@comment-25555436-20150530015447

If you want to know...they were drinking unknowingly-contaminated water. They threw many corpses to the rivers, and the water got filled with parasytes and such, from which the poor drinked in the wells, not knowing it was contaminated as it looked mostly normal (and they were thirsty).

Soon, the disease spread through the dead, infected rats, and eventually even the rich people. I was ended by the extraordinary power of north-american medicine, through a doctor that arrived, tried to fix the situation, discovered the source, and made a cure.