Cleanup procedures that might result in aerosolization
of norovirus (e.g., dry-vacuuming, dry dusting, or buffing)
should not be used (Table 2). Cleaning with detergent and
hot water, followed by disinfection with sodium hypochlorite
or steam cleaning is preferred. Lastly, minimize air currents
generated by open windows, fans, or air conditioning because
• At a minimum, wear single-use gloves and a pair of goggles. Additional personal protective equipment includes face mask, single-use gown with sleeves, single-use hair cover, and shoe covers.
• Prepare fresh disinfectant solutions every 24 hours.
• While chemicals are being applied, use appropriate ventilation in
areas being disinfected.
• For chemicals, use a pour or pump bottle that does not produce
aerosols instead of a spray bottle. This reduces respiratory irritation that can be caused by aerosols.
• Clean and disinfect areas from the lowest incident rate/likelihood
of contamination (e.g., tables, countertops, equipment) to the highest (e.g., bathrooms).
• Clean surfaces with warm water and a detergent to remove soil.
• Rinse surfaces with warm water to remove cleaning products and
• Apply sufficient disinfecting solution to thoroughly cover the entire
surface. For example, if cleaning foodservice equipment, be sure to
clean legs, sidewalls, and the back of equipment.
• Let the solution stand for the contact time given on the label.
• If the surface being cleaned is classified as a food contact surface,
this disinfection procedure should be followed by a clear-water
rinse and a final wipe-down with a sanitizing bleach solution (e.g.,
200 ppm sodium hypochlorite) or other EPA-approved product.
Soft surfaces that cannot be moved (e.g., carpet, draperies, and upholstered furniture)
• Clean all surfaces with warm water and a detergent.
• Rinse the soapy water from all surfaces.
• Steam-clean the area for 5 minutes at a temperature of 170 °F
(76.7 °C). (Not all steam cleaners can reach 170 °F, so check the
• Soft surfaces can also be disinfected with a bleach solution; however, the bleach will discolor the material.
• Contaminated linens (e.g., wiping cloths, aprons, tablecloths)
should be carefully placed into laundry bags (to prevent generating aerosols) and washed separately in hot water for a complete
• Always wear single-use gloves (and apron or gown) if soiled laundry will touch clothing when handling soiled laundry. Prior to laundering, carefully place all contaminated items that can be washed
in a washing machine in a plastic bag, then seal the bag to avoid
• Machine-wash soiled items in a washing machine using hot water
and laundry detergent.
• For loads of all-white items, add 5–25 tablespoons of bleach per
gallon of water.
• Dry the just-washed items in a dryer on the high-heat setting.
Table 2: Environmental Disinfection
(continued from page 21)
Session Topics for 2019:
• Single Residue Methods
• Analysis of Cannabis
• Method Validation and Veri;cation
• Novel and Emerging Contaminants
• Trends in Veterinary Drug Residue Control
• Pesticide Residue Forum
• Emerging Topics in Trace Level Analysis
• Multi-residue Methods for Pesticides and
• State and Federal Lab Updates
July 21 - 24