The Plague Revisited

It's the second week of Junior Sea Camp, and I am sick. In fact, I am the latest in a flurry of staff to fall victim to a virus moving through camp. I have never seen anything like this. One after another after another staff member has come down with nearly identical symptoms, thus the confidence that we are all suffering from the same bug. That's the bad news, that about a quarter of the staff are sick. The good news is that the worst of it seems to be over with in about 24 to 48 hours.
My hypothesis is thus: Because the majority of victims are those who have not worked at this camp (or any other, as in my case), I suspect that the more experienced staff have already worked up innoculations against this strain. If that is the case, then I might predict that this is not the last, but only the first in a series of sicknesses that I (and other newbies like me) will fall victim to.
Oh boy...