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Published byRobert Griffin Modified over 9 years ago
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Weaponized Bioagents YSU – Agents of Mass Casualty
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Agent Classification Military –Foundations may be foreign –May have practical roots Civilian –CDC Classification
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Military “C” “C” = Class Chemical Classes –C01 to C24 Biological Classes –C25 to C29
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Chemical Agents Sub-Codes – Examples C01 –GA –GB –GD –GF
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Military Classes - Bioagents C24 – Anti-Personnel C25 – Anti-Personnel/Vector C26 – Anti-Personnel/Ingestion C27 – Anti-Animal C28 – Anti-Plant C29 - Simulants
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CDC & EM Classification Category A – Weaponized or Available –Variola virus –Bacillus anthracis –Yersinia pestis –Botulinum toxin –Francisella tularensis –Filoviruses & Arenaviruses
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CDC & EM Classification Category B – Lower Virulence/Possible Agents –Coxiella burnetii –Brucellae –Burkholderia mallei –Alphaviruses –Ricin –SEB –Foods Agents – E. coli 0157:H7, Salmonellae –Water Threat – Vibrio cholera, Cryptosporidium
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CDC & EM Classification Category C –Any other emerging pathogen or biological toxin that might be a threat.
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Anthrax – B. anthracis 12 hrs-5 days (except delay) Inhalation – flu-like, fluid in lungs, severe difficulty breathing, broadening mediastinum Not Contagious – Aerosol or powder Treat With Antibiotics Military Vaccine 30% Mortality (untreated may be higher)
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Botulinum Toxin Affects in 12 hours to 3 days Flu-like symptoms, difficulty speaking, swallowing, drooping eyelids, paralysis Antitoxin available (not reversible damage) No commercial vaccine Probably disseminated in liquid droplets or on food.
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Cholera – V. cholera 12 hours to 5 days Severe diarrhea, vomiting and weakness, leg cramps and fluid loss. Not contagious – disseminated in food or water. Treatable with antibiotics – high fluids Newer vaccines not available in U.S. Old vaccine low effectiveness, short-lived
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Glanders – B. mallei 1-14 days Fever and headache, muscle tightness, chest pain, tearing and light sensitivity Not highly contagious – aerosol diss. Treatable with antibiotics Very few historical cases, up to 50% mortality possible. No vaccine
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Plague – Y. pestis 1-6 days Flu-like, lymph node pain (buboes), blood- streaked sputum, septic shock Aerosol or food – pneumonic transmissible Treatable with antibiotics – time is critical Vaccine, once available did not prevent pneumonic form. Discontinued in 1999.
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Q-Fever – C. burnetii 2-3 weeks High fever, throbbing headache, sweating, auditory and visual hallucinations, hepatitis Aerosol or food dissemination, not very transmissible Low mortality, most recover without treatment. Vaccine not available to general public
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Smallpox – V. major 10-14 days High fever, aches, rash starts in face and arms (then trunk – unlike chickenpox) Aerosol or person-to-person. Contagious stage comes with symptoms. Vaccination 3-5 days after exposure may avoid or lessen disease. No treatment (supportive therapy only)
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Tularemia – F. tularensis 1-14 days in nature (3-5 in a deliberate act) Flu-like + lethargy. Swollen lymph nodes in systemic infections, red, sore eyes, pneumonia Disseminated as aerosol or on food – no human to human Antibiotics. Some weaponized strains may be abx. resistant.
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Mortality 1970 World Health Organization Assumed 50 kg of dried agent Disseminated on a 2 km line Upwind of a population of 500,000
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Results AgentDistance Carried (km) FatalitiesCasualties (Total) VEE140035,000 Typhus59,50035,000 Brucellosis1019,00085,000 Plague10500100,000 Q-Fever>20150125,000 Tularemia>2030,000125,000 Anthrax>>2095,000125,000
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Other Concerns Residential backflow protectors Food QC Availability of viral hemorrhagic fevers Soviet brain drain
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Soviet Bioweapons - Rating Smallpox Plague Anthrax VEE Tularemia Q-Fever Marburg virus Others include the flu virus, glanders and epidemic typhus.
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Detection Rapid Dx Assays –Military Botulinum, SEB, SEA-C-D Dengue Fever, Q-Fever, Plague, Tularemia, Typhus, West Nile –Civilian SMART Tickets DNA Techniques
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Decon
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ER + Decon Isolate small areas to 100 ft or more Note weather, population, density and time of day For airborne cloud – shelter-in-place Field Detection – Not Recommended PPE –General rule – Level A – Latex may not be fully protective
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ER + Decon Remove clothing (aerosol or powder) Double bag Wash w/soap + water 10% bleach wash (10-15 minutes) Rinse solutions should be retained if possible
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ER + Decon Careful of reaerosolization Treat all items as Haz-Waste Note airflow around patients (bioaerosols) Always try to decon at site if possible
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NPS or SNS Future module will address Located at secret locations around the nation (12 hour deployment on gov. req.) Enough to treat, perhaps hundreds of thousands (depending on disease)
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Antibiotics May be classified: –By spectrum –Method of administration –Activity (bacteriacide vs. bacteriastat) –Chemical structure Useful because those in the same class will show similar side-effects, action, toxicity etc.
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Antibiotics Penicillins Cephalosporins Fluoroquinolones Tetracyclines Aminoglycosides
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Antibiotics Penicillins –Oldest –Similar in chemistry to cephalosporins –Bacteriacidal –Natural penicillins (“G”) (methycillin) –Aminopenicillins (Amoxil) – broader may require penicillinase inhibitor
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Antibiotics Cephalosporins –Bacteriacidal –May show similar allergic problems to pen. –1 st, 2 nd and 3 rd generation –3 rd generation cross blood-brain barrier –Work on anaerobes
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Antibiotics Fluoroquinolones –Synthetic –Reach deep tissues –Bacteriacidal –Cipro, Penetrex, Floxin, Trovan
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Antibiotics Tetracyclines –Derrived from strep bacteria –Bacteriostatic –Effective against rickettsia + parasites Macrolides –Emycin, Z-pak, Clarithromycin –Effective to penetrate lung tissue –Spectrum similar to penicillins
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