I think that probably every weapon works best where there is an abundance of targets. The cities would be the optimum target for any biological weapon. The cities are filled with Democrat voters.
The Democrat leaders do not inherently like the Democrat voters. They see Democrat voters as mere tools. The greatest fear that the Democrat leaders have is that there are/will-be too many people on this planet. Would they use biological weapons against their own voters? Ultimately, we will each have to answer that question ourselves.
Just a few comments on an otherwise great post.
Stampeding the lemmings is a Democrat tactic. I expect that Democrat leaders know how to panic Democrat voters from years and years of experience. Introducing multiple disease lines in Democrat controlled cities is a winning strategy for Democrats urging greater spending and bigger government.
Since dead Democrat voters usually turn out in record numbers for their demographic, several thousand dead is not a big dent in the vote.
We are in a contest with evil people who are capable of committing unimaginable crimes to keep their power. We should NEVER forget that.