[custom-related-posts title=”Related Posts” none_text=”None found” order_by=”title” order=”ASC”]
Face masks must cover the nose and mouth when worn, do not touch, use only once and then throw in the trash with a lid.
Medical face masks have 3 layers with different uses. The outer layer has waterproof properties, effectively preventing the liquid particles from being splashed when the patient sneezes, coughs, breathes hard … The outside surface is usually light blue to be easily distinguished, wearing a proper face mask is for the color layer to turn out.
The inner layer is always white, very easy to distinguish from the outer layer. The face of the cloth turns inwards, close to the skin of the face, so it must be pure and smooth, without fiber fibers causing discomfort. In addition, it must be waterproof to sweat to create comfort for the user.
The middle layer prevents particles from splashing and must filter dust and bacteria. This is the layer that determines the quality of the mask. A “right” filter layer must allow air to pass easily, creating a sense of ventilation for users, but must have a structure sufficient to filter out particles of microscopic dust and bacteria. Proper use of a medical face mask will prevent large droplets of virus-containing saliva from being shed by the person through sneezing or coughing, which will effectively prevent the virus.
According to the Ministry of Health, using a medical face mask properly is one-time use and then disposing of it in a safe, covered waste container. Do not reuse disposable face masks.
When wearing a mask to let the blue face out due to the blue side is waterproof, large droplets of saliva shot will not penetrate inside. The white side has a hygroscopic nature, so it goes back inside, letting the breath escape into the mask.
Face masks must cover both the nose and mouth. When wearing a mask, do not touch it, because touching the hand, even editing the face mask will unknowingly spread the hand to the virus and other pathogens, then transmit the disease to yourself and those around.
When removing the mask, only hold the strap by the ear, remove for safe in the trash. Never use the handle to remove the mask. The habit of covering your hands with a mask will infect the virus and other hand pathogens.
Hands should be washed with soap and clean water immediately after discarding a mask.
According to the US Food and Drug Administration (FDA), one of the criteria for evaluating mask quality is “Bacterial Filtration Efficiency (BFE). Facemasks are classified as “medical masks” when they have BFE> 95%. The difference between the main mask types is that this filter layer, choosing a good mask is the one that has the highest BFE. A mask with a BFE> 99% is the best choice.
Coronavirus with the size of about 150-200 nm (nanometers) and Influenza A virus of size 80-120nm (nanometers), these viruses mainly reside in large drops of saliva.
A 2013 study found that large droplets range in size from about 75 to 360 micrometers (1 micrometer = 1000 nanometers), so they can easily be trapped by regular medical masks. effective filtration of particles sized over 5 micrometers.
If you are planning to visit Vietnam, please check this news: Is Vietnam tourism safe in the case of corona virus?