The other is by contact of
the hands with the face, eyes or nose, after having supported them on surfaces
exposed to SARS-CoV-2. Scientific evidence has shown that this virus can remain
infectious for 4 hours on a copper surface, 6 hours on stainless steel, 8 hours
on plastic, and up to 24 hours on a cardboard one.
The droplets measure
between 5 to 10 microns, when falling and evaporating, the viable germs remain
contained in the so-called droplet nuclei of Well (aerosols), much smaller and
with greater displacement capacity. Both remain dangerous and responsible for
the transmission of respiratory infectious diseases. This form of transmission
is less immediate, less direct, where protection measures are more difficult,
less effective and also more expensive. Hence, the need for protection comes in
form of surgical face mask. So, buy your surgical face mask in Canada
here.
How does it all come in to
action?
The entrance door of the
virus to our organism is the same as the exit door, mouth and nostrils, with
the exception of the conjunctiva mucosa that is only entrance. Therefore, the
best way to prevent the entry of SARS-CoV-2 into our body is by using surgical
face mask, but also by maintaining social distancing and proper hand
washing.
With regard to surgical
face mask in Canada, different types have been identified that are governed by
specific regulations and recommendations for use. From lowest to highest level
of protection, they are classified as: household or hygienic, medical or surgical
face mask, and self-filtering or respirators.
The rise of using surgical
face mask in Canada
In June of this year, the
World Health Organization (WHO) recognized for the first time the usefulness of
surgical face mask in Canada against SARS-CoV-2. However, not any
type of mask is recommended. It is recommended that surgical face mask have
at least three layers and that, in their preparation, polypropylene is used as
a priority. If it is not available, you should look for surgical face mask
in Canada here.
The use of surgical
face mask should be reserved only for the control of the source (infected
person) in the community, but not as a preventive measure. The filtration
efficiency depends on the tightness of the fabric, the fibers or the diameter as
well as the manufacturing process. The surgical face mask in Canada
has shown to vary between 0.7 and 60%. The higher the filtration efficiency,
the greater the barrier effect the fabric has. For example, surgical
face mask must have a minimum of four layers, yet still achieve a
filtration efficiency of 13%.
Why surgical
face masks?
Surgical face mask
in Canada is flat, has pleats and is fixed to the head by means of tapes;
it has been traditionally used to reduce surgical wound infections caused by
bacterial contaminants that can be exhaled by healthcare personnel. Although it
is true that they offer a balance between filtration and breathability, they filter
droplets of 3 microns in diameter. The use of this type of mask is not
recommended for health personnel or relatives of patients who live with
patients infected with coronavirus.
On the other hand, in a
recent meta-analysis of observational studies, disposable surgical
face mask and reusable 12 to 16-layer cotton surgical masks were found to
be associated with the protection of healthy people within homes and among sick
contacts (positive effect).
Self-filtering masks are
designed to reduce exposure to airborne contaminants. They are used by
healthcare personnel to offer a good level of protection, adapt well to the
face providing an airtight seal between the face and the respirator. But the
personnel must receive training and also a medical evaluation during use.
It must be established that
the use of a surgical face mask in Canada, whatever it may be, is not
enough to protect the community against this pandemic. But to always keep in
mind the process of transmission of the infection and act accordingly:
practicing social distancing, avoiding unnecessary exposure, using masks and
frequent and efficient hand washing, in order to defeat the common enemy that
has significantly disrupted our reality.
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