We're not sure why this year is different from other years other than it's part of the natural cycle of these illnesses.
On the face of it, last year marked a pause in a remarkable run of success enjoyed by Celtic in recent years,
Over a five-year period we see an average of one to two cases a year, so statistically speaking, five cases in one year is a pretty large increase. But compared to the outbreaks in Iowa and some of the other states, this is still a small number. We are not alarmed.