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    Resources to Educate & Prepare Responders for Fourth Generation Chemical Agents

    Source: U.S. Department of Health & Human Services

    After the incidents in the United Kingdom (U.K.) in 2018 involving a fourth generation agent, the White House National Security Council convened a federal interagency working group to identify and develop resources to help the emergency response community prepare for and respond to a fourth generation agent incident if one ever occurs in the U.S., as well as support the development of specific guidance and training to enhance overall preparedness efforts.

    What are fourth generation agents?

    Fourth generation agents, also known as Novichoks or A-series nerve agents, belong to a category of chemical warfare agents that are unique organophosphorus compounds. They are more persistent than other nerve agents and are at least as toxic as VX. While fourth generation agents share similar characteristics with other nerve agents, fourth generation agents also pose several unique challenges in terms of toxicity, detection, persistence, and potential for delayed onset of symptoms.

    The following resources were developed to address these characteristics and challenges and provide tailored guidance to various segments of the emergency response community by:

    • A federal interagency working group comprising experts in medicine, science, public health, law enforcement, fire, EMS, HAZMAT, and occupational safety and health
    • Department of Defense
    • Department of Health and Human Services (Office of the Assistant Secretary for Preparedness and Response, Centers for Disease Control and Prevention, and National Institute for Occupational Safety and Health)
    • Department of Transportation (Pipeline and Hazardous Materials Safety Administration and the National Highway Traffic Safety Administration’s Office of Emergency Medical Services)
    • Department of Homeland Security, Federal Bureau of Investigation, Occupational Safety and Health Administration, and Environmental Protection Agency

    Resources Regarding Fourth Generation Agents:

    • Safety Awareness for First On-Scene Responders Bulletin – Designed to educate and prepare first responders for situations when law enforcement, fire, and emergency medical services (EMS) personnel are first to arrive on scene and initially may be unaware that a fourth generation agent is present. This bulletin will assist departments and agencies develop specific guidance and training to enhance overall preparedness efforts. (PDF – 791 KB
    • Fourth Generation Agents Reference Guide – Designed to educate and prepare hazardous materials (HAZMAT) response teams, the guide includes chemical and physical properties of fourth generation agents, as well as detection, firefighting, personal protective equipment, and decontamination recommendations for situations when responding to a known or suspected fourth generation agent incident. This guide will assist HAZMAT response teams develop specific guidance and training to enhance overall preparedness efforts. (PDF – 789 KB
    • Fourth Generation Agents Medical Management Guidelines – Designed to educate and prepare fire, EMS, and hospital staff and guide the medical management of patients exposed or potentially exposed to a fourth generation agent. (PDF – 858 KB)  (Note: This is one PDF document that is divided into two Web pages, one for pre-hospital care and one for in-hospital care.)

    Read more at Chemical Hazards Emergency Management (CHEMM)

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