Okay.
So it's a big problem. There are lots of secondary vectors, which is what we would call them, that allow them to spread.
On May 16th, 2012. See this statement in context.
May 16th, 2012 / 4:05 p.m.
Prof. Hugh MacIsaac
Okay.
So it's a big problem. There are lots of secondary vectors, which is what we would call them, that allow them to spread.
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