How to protect Us By Corona Part-2
here's lots of information out there
about how we should be
protecting ourselves
and others from COVID-19.
Definitely the best
practices for prevention
against COVID-19 are these measures,
social distancing, staying
home, especially when ill,
not touching your face,
and washing your hands.
As researchers learn more
about COVID-19 every day,
guidelines may expand to
adapt to the new information.
So we should also be
adaptable as we stay informed.
One of these measures is
a new CDC recommendation
of wearing face coverings in public.
Coronavirus travels in droplets
called respiratory droplets
that are propelled from the
spray of a cough or a sneeze.
But research now suggests that droplets
may even be emitted from
just speaking or breathing
and can potentially last
in the air for three hours
before falling to the ground.
So how do face masks help us?
There are different types,
but the most common ones
you're probably hearing about
are N95 respirators, surgical
masks, and cloth masks.
Medical grade N95
respirators have a tight seal
against the face and are
designed to filter out
95% of particles, even the
ones that are really small,
up to 0.3 microns.
Coronavirus, which is even smaller,
only 50 to 200 nanometers,
can travel in respiratory
droplets of various sizes.
So we rely on N95
respirators to filter out
pretty much all large
droplets and most small ones
that may contain the virus.
Having these respirators available
for health care providers
is critical to ensure they
can treat their patients
without sacrificing their
own health and safety.
And so they must be reserved
for health care workers.
Surgical masks are loose-fitting,
so are mostly intended
as a physical barrier,
not a filtration device.
They protect the wearer against
large respiratory droplets,
but not smaller particles,
so are not considered reliable
respiratory protection
by the CDC.
But they do protect others
from the mask wearer's
own respiratory droplets,
at least from coughing,
sneezing, and exhaling.
Surgical masks should also be reserved
for health care workers.
The CDC now recommends
cloth face coverings
for the general public,
masks made from a simple
t-shirt, for example,
for when you do need to
go outside for essentials,
like to the grocery store or the pharmacy.
Some states in the US have already started
mandating this as well.
Even so, the best practice is
to practice social distancing
and stay at home.
But for essential outings,
you should cover your mouth
and nose with a cloth barrier.
Cloth masks can act as a physical barrier
and protect others from
the respiratory droplets
that you emit.
You may not feel like others
need protection from you,
especially if you're not feeling sick.
But the CDC estimates that
25% of people infected
with the novel coronavirus
don't show symptoms
and feel fine.
But they can still transmit the virus
to other people around them.
So it's a better safe than sorry practice.
The only risk, you may start
to believe it's protecting you
more than it actually is
and be fooled into a
false sense of security.
You may feel safer wearing a mask,
but remember, it's meant to
protect others around you,
not yourself.
The best way to keep yourself safe
is with social distancing
and washing your hands often and well.
And once you get home, be
sure to remove your mask
without touching the outside
contaminated part of the mask
and wash it before your next use.
The novel coronavirus
can survive on objects
from hours to days,
depending on the material.
Research so far estimates it can survive
on copper for four hours,
on cardboard for 24 hours,
and on plastic and stainless
steel for around 72 hours.
This is still early research,
so it could potentially
survive even longer.
This means that in addition
to washing your hands often
and for 20 seconds each time,
you should disinfect frequently
touched surfaces regularly,
like your countertops, phone, doorknobs,
light switches, and faucets.
A good disinfectant is
something with 70% alcohol,
like rubbing alcohol.
You can also use a bleach solution.
These work best when
you let the solution sit
on the surface for 30 seconds to a minute
before wiping it down.
You can make your own bleach solution
by mixing five tablespoons of
bleach per gallon of water.
3% hydrogen peroxide also works
if you wait one minute
before wiping it down.
Commercial wipes contain an ingredient
called quaternary ammonium,
which is also efficient in disinfecting
when you follow the
directions on the label.
Be sure to never mix cleaning products,
because they can create dangerous,
toxic chemical reactions.
So what can you do when
you have to leave your home
for, say, groceries?
A good exercise when
you're out is to assume
everyone around you is infected,
and you, yourself are as
well, and act accordingly.
This will keep you aware of what you touch
and your distance from others.
Be extra careful not to touch your face
and minimize touching
your personal belongings.
When you get home, wash
your hands immediately
and disinfect any items you
may have touched while out,
like car keys and your phone.
Your concern should be more
about the people around you
than the groceries you're bringing home.
Your risk of being infected by a virus
living on your groceries is very low.
So there's no need to disinfect every item
as long as you do these things.
Wash your hands after unpacking groceries.
Disinfect countertops
after unpacking them.
And wash your hands before
cooking and before eating,
which you should be doing
all the time anyways.
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