TABLE 2.

Concentration and duration of agent release

Agent	Fluid	Concn (ml or g)	Duration	Reference
Variola major virus	Urine	102-105	19 days	77
Hantavirus	Saliva	102	14 days	54
Marburg virus	Feces, urine, and salviaa	102.3-103.3	Throughout the illness	18
Flaviviruses	Urinea	6-103	10 days	57

^aFluid in animals.