The treaties in place to restrict biological weapons have exclusions that permit the development (and use) of incapacitating agents. The DoD/NIAID/Daszak/Fauci

The treaties in place to restrict biological weapons have exclusions that permit the development (and use) of incapacitating agents. The DoD/NIAID/Daszak/Fauci model has been that a hostile nation would release a biological weapon that would compromise the ability of members of the Armed Forces to engage in combat operations over a period of months or years, and to address this they had planned to be able to quickly marshal a new transfection to induce neutralising antibodies [in the relevant groups before they were deployed to combat zones], hence the focus of research into these particular areas from the defence establishment and its partners over the last few decades.