Dr. Walid Al-Faisal, a public health consultant at the Dubai Health Authority, warned against the wrong use of masks, including Covid 19, if the lack of hand hygiene caused the muzzle to be contaminated, or repeatedly touched or removed from the mouth and nose, by lifting it on other parts of the face or head, then returning it again over the mouth and nose .
Also, non-medical masks or fabric masks increase the likelihood of a person becoming infected with Covid 19, in addition to that the muzzle may cause shortness of breath, depending on the type used, and may damage facial skin, and difficulty communicating clearly if wearing it is uncomfortable, adding that the use of The mask may create a false sense of security for the wearer, without achieving clear benefits, which leads to indolence in the practice of preventive measures that are recognized as beneficial, such as physical distance and hand hygiene.
Dr. Walid added: Wearing a medical mask can limit the spread of some respiratory viral diseases, including COFED 19. However, using the mask only is not sufficient to provide an adequate level of protection, but other measures such as physical separation and hand hygiene should be adopted.
Regarding the types of gags used against the spread of Covid 19, he said: There are medical gags (also known as surgical gags) and they are made of at least three layers of non-woven synthetic materials, and they are installed in a way that limits filter layers in the middle. These gags are available in different thicknesses and have different levels Fluid resistance and two levels of filtration. These medical respirators reduce the transmission of saliva or respiratory droplets from their wearers to others and to the surrounding environment.
It also reduces the possibility of infectious droplets from others to the mouth and nose of the wearing of the muzzle, taking into account cleaning hands before wearing a clean muzzle and after taking off. The muzzle should be securely attached around the chin and the top of the nose. Also, you should avoid touching the muzzle while wearing it on the face and should be disposed of immediately if it becomes wet. More importantly, wearing a muzzle should be accompanied by other preventive measures, including the correct practice of hand hygiene and physical spacing at least one meter (3 feet) from others.
In addition, there are respiratory masks, also known as filtered respiratory face masks, and are available at different levels of performance: FFP2, FFP3, N95, N99, and FFR. These masks are specifically designed for health care workers who care for Covid 19 patients in facilities and places where special medical procedures are applied. . Respiratory masks are designed to protect the wearer when they perform medical procedures that result in spraying smaller particles than ordinary droplets in the air at the place of health treatment. The correctness of installing the respirator mask on health care workers before using it to ensure that it is installed securely and properly on the face of the user.
Dr. Walid explained that there are also non-medicinal respirators and they are often homemade from breathable fabrics and can be available commercially as well. There are many designs for woven sleeves, but they generally cover the nose and mouth, and are installed with elastic bandage or tape, and include multiple layers of fabric, Sometimes it can be washed and reused.
A public health consultant indicated that there is limited evidence of the benefits of these masks, as one study showed that the risk of developing a respiratory infection increases (not decreases) among health care workers who use cotton cloth masks compared to medical masks. Some countries recommend cloth masks as a means of controlling infection from the source in the general population, and although their protective effectiveness for their wearer is unknown, they may protect others if the wearer is in a stage before the onset of symptoms or is asymptomatic.
Global health recommendations
He pointed out that the recommendations of the World Health Organization say for countries that consider imposing the use of masks, the organization advises decision makers to apply a risk-based approach when making decisions about places and conditions in which non-medical masks can be used in the community that takes into account the purpose of using the mask. The intention was to prevent the apostate from transmitting the infection to others (i.e. controlling from the source) or to protect the apostate from infection (i.e. prevention), and the risk of exposure to the infection as a cause 19 due to the epidemiological spread / number of cases among the population if the rate of transmission of the disease in the community is high and it is not possible to take Other measures such as tracking mixtures or the ability to perform an examination, for example by profession.
Individuals who work in close contact with the public (such as the community health worker and the cashier), and the risk of personal exposure to the muzzle wearer / specific population group For example, if the supplies are adequate, medical respirators can be used by people with associated diseases, such as cardiovascular disease Bloody or diabetes, the elderly, immunocompromised patients, the environment in which the population lives as the densely populated places (such as refugee camps and overcrowded living quarters) and places where individuals cannot maintain a safe distance (such as crowded buses or transportation) Other).
He explained that there are preventive measures before applying, using, removing and disposing of the muzzle, before touching the muzzle, the hands should be cleaned and rubbed with an alcoholic antiseptic or washed with soap and water, with the need to examine the muzzle to make sure that it is not torn or perforated and the upper end of the muzzle is determined (the location of the metal tape) , And make sure to point the correct side of the muzzle out (the colored side).
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