The concept and rumination over delivering bio-weapons in similar fashion is not unheard of.
Just the top of my head - Unit 731 plague-infested fleas and "Operation Cherry Blossoms" in Japan, Operation Big Buzz" (1955) and "Operation Drop Kick" (1956), "Биопрепарат" (1974) in the USSR, and history of chucking plague-infected corpses (flying dead cows anyone?) in siege warfare.
Hows your ninth mega booster shot going?
Maybe if you also try having your hair pink and adding some mandatory pronouns will help the vaccine even more.