[Darth Sidious]

Not too long ago, scientists in northern Canada exhumed some bodies of victims from the 1918 pandemic. The permafrost had preserved the remains to an extent that it was possible to study the effects of the virus on bodily tissues.

There was some concern that the virus was yet present, and could reawaken from dormancy.

[2sheep]

There was some concern that the virus was yet present, and could reawaken from dormancy.

I ran across a link a few minutes ago (and now I can't remember where) that says that could indeed be a problem.