Biological warfare began when some wise guy got the idea to use a catapult to throw dead men into a besieged enemy city— dead men who died of the plague preferred. It got more sophisticated in recent centuries. And the causative organism that makes zombies would make a dandy weapon.
You become a zombie by being bitten by a zombie. So there is some infectious agent in a zombie’s mouth that transmits the disease, whether virus, bacteria, prion or something else.
Scientists could identify this agent and grow it in a lab, aerosolize it, and create bombs or other weapons that spread the agent in the air where people could get it in their eyes, noses and mouths and become infected. This could be lobbed into enemy lines, and in a few days or hours you would have many dead soldiers reanimating and infecting their comrades.
If the side using weaponized zombies has spies in the enemy capital, those spies could have zombie bombs smuggled to them. The bombs could be activated in subways or other crowded places for maximum effect.
Of course, these possibilities depend on the enemy being wholly unsophisticated about zombies. Otherwise, the enemy would retaliate with zombie bombs of its own. Most military forces are smart enough to know that bioweapons— zombie or other— are no fun at all when both sides use them, and would not use them unless the enemy had used them first.
The scientific answer would seem to be that the sexual partner runs the risk of a fatal zombie infection. In most zombie movies, EVERY bite results in a fatality, no matter what treatments are tried. So one might expect that a large percentage of zombie victims’ sex partners get infected, even when safer sex practices are used.
If one grants the possibility of slow moving zombie infections— perhaps mainly in people who got the infection through sexual transmission— you could have lots of people who are infected and don’t know it spreading the infection on. So— life in the zombie apocalypse is going to be a lot less sexy than you’d think.
This is a post in the A to Z Challenge: http://www.a-to-zchallenge.com/
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