Ridecamp: [RC] WNV patterns

We've had no incidents so far this year here in Maryland of human or equine
WNV (according to http://westnilevirus.nbii.gov/ as of 8/23).  Wondering
why.

Is our drought keeping the mosquitoes away?  Were we exposed last year and
now have some immunity?  With the horses, vaccination could be a factor, but
that can't explain the lack of human illness   It seems as though the virus
has moved on to not-previously-exposed pastures, with not much illness from
here on northward.  Sort of sounds like what Maryanne (in Egypt) described.
Yes, I vaccinated this spring (in March and April), but perhaps we'll only
need boosters for another year or so for healthy adult horses.

Or, we could get hit hard if we ever see rain again.

Cindy



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