Biological Weapons:
Biological agents are found in nature and can also be manufactured.
It is possible to weaponize biological agents so that they can be disseminated to affect broad segments of the population, animal populations, or crops. Some biological agents are contagious, but many are not.
Routes of exposure for biological weapons are:
Inhalation
Ingestion
Absorption
Many, but not all, biological agents take days or even weeks for their symptoms to appear. It is possible for a biological attack to occur and remain unnoticed for some time.
