During the prevention and control of the new crown pneumonia epidemic, preventive disinfection measures should be taken in places with dense crowds (such as conference rooms, hotels, supermarkets, etc.), or when the risk of virus transmission increases due to crowded activities. According to the conclusion of experts, preventive disinfection measures should be taken in the following four places: first, crowded places such as waiting rooms, waiting rooms, wharfs, passenger stations, ticket halls, etc.; second, public transportation such as buses and long-distance buses; The third is institutions, schools, kindergartens, hotels and hotels; the fourth is places for medical isolation and observation. In addition, the new coronavirus is prone to appear in the parts that the patient’s droplets can reach or the hands often touch, such as doorknobs, faucets, doorbell buttons, elevator buttons, elevator cars, stair handrails, etc. These parts should be cleaned regularly by special personnel disinfect.
So, during the epidemic prevention and control period, how should citizens disinfect their homes at home? Experts said that the new coronavirus belongs to the β-genus coronavirus, which is sensitive to ultraviolet light and heat. 30 minutes at 56 degrees Celsius, ether, 75% ethanol, chlorine-containing disinfectants, peracetic acid, and chloroform and other lipid solvents can effectively inactivate the virus. It is recommended that the home environment and items should be mainly cleaned, supplemented by preventive disinfection, and excessive disinfection should be avoided. Experts give the following advice:
1. Tableware and tea sets: physical disinfection is preferred, boil for 15-30 minutes, or use a high-temperature disinfection box (cabinet) to disinfect according to the instructions; you can also use chlorine-containing disinfectant (effective chlorine concentration 250mg/L ~ 500mg/L) to soak for 30 After a few minutes, rinse with clean water.
2. Object surface: For surfaces that are frequently touched such as countertops, door handles, telephones, switches, kettle handles, wash basins, toilets, etc., chlorine-containing disinfectants can be used (effective chlorine concentration 250mg/L ~ 500mg/L) Wipe it for 30 minutes, then wipe it with clean water, or wipe it with 75% alcohol for disinfection.
3. Floor: Use chlorine-containing disinfectant (available chlorine concentration 250 mg/L ~ 500 mg/L) to wet mop with a mop for 30 minutes, and then rinse with water.
4. Ordinary fabrics: Towels, clothing, quilts, etc. can be soaked in chlorine-containing disinfectant (effective chlorine concentration 250mg/L ~ 500mg/L) for 30 minutes, then rinsed with clean water, or other clothing disinfectants can be used according to the instructions. (Note: Chlorine-based disinfectants have a bleaching effect on fabrics).
For the current common disinfectants and their preparation and use, experts also gave specific guidance.
1. 84 disinfectant (effective chlorine content 5%): 1 part of 84 disinfectant is diluted with 99 parts of water.
2. Disinfectant powder (available chlorine content 12-13%, 20g/pack): 1 pack of disinfectant powder plus 4.8 liters of water.
3. Chlorine-containing disinfectant effervescent tablets (available chlorine content 480mg/tablet-580mg/tablet): 1 tablet is dissolved in 1 liter of water.
4. 75% alcohol disinfectant: directly wipe and use.
Experts finally remind the public that chlorine-containing disinfectants are irritating to the skin and mucous membranes. It is recommended to wear masks and gloves when preparing and using them; children should not touch them; ethanol disinfectants should be used away from fire sources.