The key to getting all countries infected is just to make a low-detected virus and let it spread to all the countries slowly.
THEN START MAKING THE forgetER DEADLY.
and that is a good idea i try to use :D
also, with over 1k days until completion of the vaccine, i don't think i need to worry about it, eh?
although madagascar has it's ports closed, with ports and airports closed on australia too :c