Medical workers must wear a medical mask when performing manipulations and procedures involving contact with biological fluids. Ordinary people use masks to "hide" from the polluted environment, saving their lungs from harmful substances that enter the air through industrial emissions and car exhausts. You can buy a disposable mask at any pharmacy, and during cold weather and seasonal colds, it can be safely called a necessity.
Medical masks became widespread about a hundred years ago, when the world was hit by the "Spanish flu" epidemic. Then a medical mask was called a bandage made of several layers of gauze, which covered the nose and mouth and was fixed on the face with strings. Now impractical gauze has been replaced by light and effective polymer materials that are hypoallergenic and have high filtration and protective capabilities.
The modern disposable medical mask consists of two or three layers of non-woven material. It is attached to the face thanks to elastic ear loops.
The quality of the product is determined by the convenience of wearing it. So, the greatest comfort is provided by a mask, inside which flexible plastic or aluminum plates are sewn in for a tighter fit to the face.
The quality of air filtration depends on how strong its throughput qualities are (resistance to airflow, measured in Pascals) and the size of the filtered elements (measured in microns). The recommended dates are as follows:
(1) the mask, equipped with a paper filter, is changed 1 time in 2 hours;
(2) the mask, treated with a special bactericidal agent, is worn for about 3-5 hours;
(3) if the mask is wet from coughing, sneezing or breathing, it should be replaced immediately.
It is important to remember that it is impossible to restore the protective properties of a disposable medical mask by any method of sterilization. You can't reuse the mask.
It would seem that it is very easy to put on a mask. What might cause problems? But it is worth remembering that:
(1) the mask should cover the mouth, nose, and chin;
(2) the plastic mount must be adjusted with your fingers to the back of the nose;
(3) the folds on the mask should be expanded, giving it a more comfortable shape and providing a better fit;
(4) it is not recommended to touch the mask with your hands while wearing it;
(5) do not put the mask on your chin or put it in your pocket and then use it again;
(6) dispose of the wet and dirty mask immediately
(7) when removing the mask, do not touch the protective layer on which the infection agents have accumulated, it is better to pull it off the face by the loops;
(8) the mask is recommended to be worn in places where people are crowded (in clinics, shops, theaters, public transport), especially during epidemics;
(9) but it is not advisable to wear it on the street since the risk of infection in the open air is practically non-existent.
If you put it on incorrectly, the protective effect will decrease, and the risk of catching the virus, on the contrary, will increase.
Medical masks are usually worn with the white side facing the face, and the colored side facing out. It is also worth noting that the nose retainer is usually sewn on the inside.
If the manufacturer provides the mask with additional properties, for example, external water - repellent layer and an absorbent inner layer, this is indicated on the packaging.
When you are already ill and don 't want to infect others?
Or when you are afraid of getting infected from others?
Epidemiologists have conducted a number of studies and concluded that the wearing of a mask by an already infected person does not affect the rate of infection in society.
Hence the conclusion: do not want to get sick – wear a mask.
Wear the mask correctly and take care of yourself!