Hmmm.... musing outcomes of hypothetical situations is sooo wonderfully 
unproductive that I can't pass it up:

1) The virus targeted certain genetic traits, which are apparently 
extremely common.  Resistance would seem to be a recessive trait 
(because of its low occurence).  Suppose that certain tight-knit groups 
(Hassidic Jews, Amish, various remote aboriginals, Appalachian 
hillbillies) might have the resistance trait in higher numbers--or have 
been wiped out entirely.  Likewise, it would seem probable that at least 
one racial group would have a significantly higher level of resistance, 
just as some groups have a higher incidence of recessive traits.

2)  If the virus is still active, you can expect a high level of 
death/sterility among male infants in the first generation or two, until 
the trait of resistance has been bred into the entire female population.

3)  Possible power shifts are varied, and not necessarily uniform.  
While some countries might round up "breeders" forcibly, in others the 
ability to reproduce could form a new elite.  Suppose the last 
half-dozen breeder males of the Joketsuzoku demanded drastic reforms (I 
based that off the 300 tribe members I've seen in different fanfics).  
Matriarchal laws might be hard to enforce if you can't credibly use 
either death or castration as punishments.  Even torture or imprisonment 
would be risky, as they can reduce the ability to perform, and promote 
illness (which would lower sperm count).

4)  Wealth redistribution in the next generation would be HUGE.  Expect 
lots of increases in inheritance taxes to non-relatives.  After all, if 
the Kennedys aren't going to be around next century, somebody's gonna 
get all that wealth.

5)  Cloning technology has rocketed forward in the last half-decade, and 
that's with no universal agreement that it should even occur.  Can you 
imagine how far it might have come in a world where most of the power 
families are looking at a complete absence of heirs?  Picture this:  One 
generation after another of Tatewakis....

6)  If the virus is short-lived, Jusenkyo's neighbors had better get 
ready for a massive immigration problem, as lonely women start bringing 
their housepets to Spring of Drowned Stud (renamed, obviously).

Just my ramblings.

--Freemage
  

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