Cleaning and Disinfection CampD Procedures Part 1 Adapted from the FAD PReP NAHEMS Guidelines Cleaning and Disinfection 2014 Disinfection Methods and Regulation 2 Physical Thermal inactivation heat ID: 761318
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Cleaning and Disinfection C&D Procedures, Part 1 Adapted from the FAD PReP /NAHEMS Guidelines: Cleaning and Disinfection (2014)
Disinfection Methods and Regulation 2
Physical Thermal inactivation (heat)DNA, protein, oxidative damageMoist or dry conditionsUltraviolet radiation Photochemical reaction Primarily a surface effect Filtration Physical removal of microorganisms USDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Disinfection Methods 3
Chemical USDA APHIS will determine which disinfectants are to be usedInactivates a wide variety of microorganisms – not allChemical disinfectant classes Selection on characteristics, efficacy, and hazards USDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Disinfection Methods 4
Disinfectants Chemical classesAcidsAlcohols Aldehydes Alkali agents Biguanides Halogen-based compounds Oxidizing/peroxide-based compoundsPhenols Quaternary ammonium compoundsUSDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 15
Chemical disinfectants regulated by the U.S. EPA Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)Chemical disinfectants considered “antimicrobial pesticides”Pesticides must be registered Novel pathogens FIFRA exemption possible USDA APHIS and CFSPH FAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1Disinfectant Regulation 6
C&D Procedures: Assessment and Planning7
Assessment First step for any disinfection procedure Situation assessment includes: Identifying pathogen Determining areas and items in need of disinfection Selecting disinfection methods Identifying and addressing potential safety or hazardous issuesUSDA APHIS and CFSPHFAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 8
Develop site-specific C&D plan Specific actions neededChronological orderEstimated time frame to performProcess to certify and record C&D procedures Disposal methods Determine needs Personnel, equipment, supplies, permits USDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1Planning 9
Personnel Number of personnel – based on task All personnel must be trained on basic C&D procedures, protocols Equipment and supplies Equipment needs Work with Logistics Unit during acquisition PPE Many chemical disinfectants hazardous Eye/face/respiratory protection, chemical resistant gloves,waterproof aprons/suits USDA APHIS and CFSPH FAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Planning 10
Document the following: Materials used and expended, cost Include labor charges, rentals, subcontractors Personnel number and identity Entry log for premises Tracking Vehicles , heavy equipmentType, formulation, quantity, date of disinfectant preparation Information should be recorded in ink, signed with author’s initials/date USDA APHIS and CFSPHFAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Documentation 11
Initiating C&D Protocols 12
C&D station location Adjacent to or at entrance points of infected premises T wo scales Small: personnel, small equipmentLarge: vehicles, heavy machinery Additional considerations Flat terrain, adequate sizeAway from sensitive areasUSDA APHIS and CFSPH FAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Site Selection 13
Movement through C&D station follows basic decontamination staging protocols Three work zones, one corridor prevent spread of hazards : Exclusion Zone Contamination Reduction Zone Support Zone Decontamination Corridor USDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1Station Design and Setup 14
Work Zones USDA APHIS and CFSPH FAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 15
Disinfectant Preparation and Application 16
Disinfectant Preparation Storage Cool location, check expiration date Fresh solutions Prepare prior to use May require same day preparation One gallon diluted disinfectant covers 100-150 sq. ft. USDA APHIS and CFSPHFAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 17
Follow label recommendations Systematic implementation T op to bottom, small sections Ensure adequate contact time Do not apply directly to animals Use caution around feeders, waterersC&D supplies are biohazardous wasteDiscard or disinfect before removal USDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Disinfection Application 18
Material Composition 19
Metals Smooth surfaceDisinfectants: incompatibility, corrosivityFlame guns Rubber and plastics Hard, nonporous surface Possible interactions with disinfectants Glass Treat as other hard, nonporous surfaces USDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Material Composition 20
Concrete Porous surfaceUse product registered for concreteHigh pressure washing, flame gunsWood Very porous, difficult to disinfect Use product registered for wood Soil Decon – heat, UV light, drying + time USDA APHIS and CFSPH FAD PReP/NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Material Composition 21
FAD PReP/NAHEMS Guidelines & SOP: Cleaning and Disinfection http :// www.aphis.usda.gov/fadprep Cleaning and Disinfection web-based training modulehttp://naherc.sws.iastate.edu/ USDA APHIS and CFSPH FAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1For More Information 22
Author (CFSPH) Glenda Dvorak, DVM, MS, MPH, DACVPM Nichollette Rider, Junior Veterinary StudentReviewers (USDA) Nathan G. Birnbaum, DVMSamantha B. Floyd, Biologist USDA APHIS and CFSPH FAD PReP /NAHEMS Guidelines: Cleaning and Disinfection - Procedures 1 Guidelines Content 23
Acknowledgments Development of this presentation was by the Center for Food Security and Public Health at Iowa State University through funding from the USDA APHIS Veterinary Services PPT Authors: Dawn Bailey, BS ; Kerry Leedom Larson, DVM, MPH, PhD, DACVPM; Reviewers: Glenda Dvorak, DVM, MPH, DACVPM; Patricia Futoma , Veterinary Student; Janice Mogan, DVM