Entry into an area with known or suspected FGA contamination should be limited to lifesaving activities.
FGAs are low volatility nerve agents (highly persistent; pose a significant cross-contamination hazard; do not easily evaporate; unlikely to present vapor hazard) and are most likely to be encountered as a liquid. Early recognition may be extremely challenging due to the possibility of delayed onset of symptoms for up to 3 days post exposure.
The most likely route of exposure is skin contact, but FGAs can also be absorbed into the body by mucous membrane contact (eyes, nose, mouth), inhalation, or ingestion. FGAs may cause rapid or delayed onset of symptoms, depending on the specific agent, dose, and route of exposure.
