Guidelines for the use of disinfectants for the prevention and control of new crown of National Health Office

 

Disinfectant Guide

 

February 2020

 

Former words

 

The novel coronavirus belongs to the genus coronavirus, and its genetic characteristics are significantly different from those of SARSr-CoV and MERSr-CoV. No novel coronavirus direct data are available. Based on previous knowledge of coronavirus, all classical disinfection methods should be able to kill coronavirus. Novel coronavirus was only found to be ineffective against the new coronavirus in the guidelines issued by WHO in 2003 when SARS outbreak occurred.

 

Disinfectant is a kind of preparation which is used to kill microorganisms on the transmission medium and make it reach the requirements of disinfection or sterilization. According to the effective components, it can be divided into alcohol disinfectant, chlorine disinfectant, iodine disinfectant, peroxide disinfectant, guanidine disinfectant, phenol disinfectant, quaternary ammonium salt disinfectant, etc.; according to the use, it can be divided into object surface disinfectant, medical equipment disinfectant, air disinfectant, hand disinfectant, skin disinfectant, mucous membrane disinfectant, focus disinfectant, etc.; according to the Killing Microbial energy It can be divided into high level disinfectant, medium level disinfectant and low level disinfectant. A kind of

 

The novel coronavirus pneumonia should be reasonably used when it is epidemic prevention and control. Following the "five strengthens seven undesirable", we should really cut off the transmission way and control the epidemic of infectious diseases.

 

"Five strengthening": isolate the sick area and the patient's residence for disinfection at any time and final disinfection; increase the frequency of disinfection on the surface of environmental objects in densely populated places such as hospitals, airports and stations; strengthen the cleaning and disinfection of door handles and elevator buttons in high-frequency contact; collect and innocuous treatment of garbage, feces and sewage; and do a good job in personal hand hygiene.

 

"Seven not suitable": it is not suitable to carry out large-scale disinfection of outdoor environment; it is not suitable to carry out air disinfection of external environment; it is not suitable to directly use disinfectant (powder) to disinfect personnel; it is not suitable to add disinfectant (powder) to water pool, reservoir, artificial Lake and other environment for disinfection; it is not necessary to use chemical disinfectant to disinfect air (space) under the condition of people; it is not suitable to use glutaraldehyde to disinfect air (space) The environment is cleaned and spray sterilized. It is not suitable to use a high concentration of chlorine disinfectant (effective chlorine concentration greater than 1000mg/L) for preventive disinfection.

 

Detailed rules and regulations

 

1. Alcohol disinfectant

 

1.1 active ingredients

 

The alcohol content is 70% - 80% (V / V), and the alcohol containing hand disinfectant is more than 60% (V / V). The compound product can be based on the product manual.

 

1.2 application scope

 

It is mainly used for hand and skin disinfection, and also for disinfection of small object surface.

 

1.3 usage

 

Hand sanitizing: evenly spray the hands or rub the hands for 1~2 times, acting 1min.

 

Surgical hand disinfection: wipe twice for 3min.

 

Skin disinfection: wipe the skin surface twice, and act for 3min.

 

Disinfection of the surface of small objects: wipe the surface of objects twice for 3min.

 

1.4 precautions

 

If only alcohol is used for hand disinfection, it is recommended to use hand cream after disinfection.

 

The external disinfectant should not be taken orally, and should be placed in a place not easily accessible to children.

 

Flammable, keep away from sources of ignition.

 

Use with caution if you are allergic to alcohol.

 

Keep away from light and store in a cool, dry and ventilated place.

 

It is not suitable for disinfecting the surface of fat soluble objects, and not for air disinfection.

 

2. Chlorine containing disinfectant

 

2.1 active ingredients

 

In terms of effective chlorine, the content is expressed in mg / L or%, bleaching powder ≥ 20%, sodium dichloroisocyanurate ≥ 55%, 84 disinfectant according to the product manual, the common content is 2% - 5%.

 

2.2 application scope

 

It is applicable to the disinfection of polluted objects such as the surface of objects, fabrics, etc., as well as water, fruits and vegetables, drinking utensils, etc.

 

In addition to the above applications, hypochlorite disinfectant can also be used for disinfection of indoor air, surface of secondary water supply equipment and facilities, hands, skin and mucous membrane.

 

2.3 usage

 

When disinfecting the surface of the object, use the concentration of 500mg / L; when disinfecting the focus, use the concentration of 1000mg / L; when there are obvious pollutants, use the concentration of 10000mg / L; when disinfecting the indoor air and water, use the product manual.

 

2.4 precautions

 

Disinfectants for external use shall not be taken orally and shall be placed in a place not easily accessible to children.

 

When preparing and repacking high concentration disinfectant, wear masks and gloves; when using, wear gloves to avoid contact with skin. If it splashes into eyes, wash it with water immediately, and see a doctor if it is serious.

 

It can corrode metal, bleach and fade fabric. Metal and non-ferrous fabrics should be used with caution.

 

Strong oxidizer shall not be in contact with inflammables and shall be far away from the fire source.

 

Store in a cool and dry place and keep in a sealed place. Do not store and transport with reducing substances.

 

The packaging shall be marked with corresponding safety warning signs.

 

Use according to the scope of use, use method, validity period and safety test results indicated in the specific product manual.

 

3. Chlorine dioxide disinfectant

 

3.1 active ingredients

 

After activation, the chlorine dioxide content is ≥ 2000mg / L, and it is unnecessary to activate the product according to the product manual.

 

3.2 application scope

 

It is suitable for disinfection of water (drinking water, hospital sewage), object surface, drinking utensils, food processing tools and equipment, fruits and vegetables, medical equipment (including endoscope) and air.

 

3.3 usage

 

When disinfecting the surface of objects, use the concentration of 50mg / l-100mg / L for 10min-15min; when disinfecting the drinking water, use the concentration of 1mg / l-2mg / L for 15min-30min; when disinfecting the hospital sewage, use the concentration of 20mg / l-40mg / L for 30min-60min;