Bioterrorism is the intentional release of a virus or toxin which may be naturally occurring or specially modified. One aspect of biological warfare is the use of a disease agent, often a flea which transmits a virus. Can be used to contaminate water supplies, destroy crops or target civillian populations.
Entomological warfare is used in conjunction with biological warfare because pests need bacteria in order to thrive. Targeting property can lead to loss of livelihoods and homelessness. Bioterrorism and entomological warfare is used to disperse populations.
Solutions would centre around homelessness and new water supplies.