This could the break in the case we need? with such a small population it'll be easy to sit them all down and question them as to who has been out the Village? /Town. If no one then someone must have come into the village.

A stranger will be picked out quite easy. Unless the town has regular traffic and the Virus could have easily been passed that way.

Not sure if you're familiar with remote Australia, but its very likely that the locals caught the virus from Ayers Rock pub. The communities are dry out there, so if the locals want a drink they actually have to drive for a few hours to Uluru, as its the closest place which is able to sell alcohol.

Combine that with the large number of tourist numbers that pass through that region daily, and you have an increase in the likelihood of catching the swine flu virus.

By the way, there's more out that way then you think. Lots of 4WD tracks and remote gorges, mountains and even Giles Meteorological station.

So thats my theory