In more severe
cases, the degree
of inflammation in the colon may be more extensive and symptoms may include: watery
diarrhea as often as 15 times
per day, severe abdominal pain and cramping, fever and weight loss.
Even small changes in relative risk can be quite substantial for diseases like malaria that kills over 1,600
per million and
diarrhea that kills over 1,000 / million population — and yes, mostly children; therefore in this
case even a small or «marginal» risk translates to a potentially very large number
of additional deaths over baseline; this is how confusion between «relative» vs. «attributable» risk can be misleading.