Social
Distancing and Self-Quarantine
What
is social distancing?
While it may be disappointing to hear
that so many sports events, cruises, festivals and other gatherings are being
cancelled, there is a public health reason for these measures. These cancellations
help stop or slow down the spread of disease allowing the health care system to
more readily care for patients over time.
As
we wait for scientists and healthcare professionals to develop a vaccine for
COVID-19, there is another, more readily available tool at our disposal.
Social distancing, defined as measures taken
to reduce physical contact, is the first line of defense for containing an
infectious disease like COVID-19. That’s because these infections
spread when people cough, sneeze, or touch surfaces on which the virus resides.
Staying at least six feet away from other
people lessens your chances of catching COVID-19.
Other examples of social distancing that allow
you to avoid larger crowds or crowded spaces are:
- Working from
home instead of at the office
- Closing
schools or switching to online classes
- Visiting
loved ones by electronic devices instead of in person
- Cancelling
or postponing conferences and large meetings
Theoretical
Potential
The calculations used to create today’s infographic come
from Signer Laboratory, a stem cell research lab located in
the Moores Cancer Center at the University of California San Diego.
Using a summation formula makes it
possible to estimate the number of new infections over a 30 day period, across
three scenarios.
Scenario
|
5 Day Period
|
30 Day Period
|
No social distancing practiced
|
1 person infects 2.5* others
|
406 people infected as a result
|
50% reduction in social exposure
|
1 person infects 1.25* others
|
15 people infected as a result
|
75% reduction in social exposure
|
1 person infects 0.625* others
|
2.5 people infected as a result
|
*For estimations only. It is not possible to infect only a
fraction of another person.
To arrive at the figures reported above, Robert A.J. Signer, Ph.D.,
and his team made a number of key assumptions.
First, they estimated the basic reproduction number (R0) of
COVID-19 to be 2.5, a figure supported by recent research. This means that, on average, an infected
individual will spread the disease to 2.5 other people.
Next, they assumed that an infected individual will unknowingly
spread COVID-19 over the median five day incubation
period. After this period, the individual will begin to develop symptoms,
immediately self quarantine, and no longer pose a threat.
Finally, they assumed a direct
linear correlation between social interactions and R0. This means that when an
infected person reduces their physical contact with others by 50%, they also
spread the disease by an amount 50% less.
Timing is
Everything
Results showed that when no action was taken, 65% of the
population contracted the disease. However, if a combination of all four
distancing measures were implemented instead, the attack rates were:
·
45% (distancing begins after a 4 week
delay)
·
21% (distancing begins after a 3 week
delay)
·
7% (distancing begins after a 2 week
delay)
What’s clear is that social
distancing was significantly more effective when implemented with minimal
delay—the final illness attack rate rose quickest beyond the third week. These
findings draw a parallel to the visualizations in today’s infographic, which
showed us just how quickly a disease can spread.
Coronavirus: What do I do if I Feel
Sick?
If
you are concerned that you may have COVID-19, follow these steps to help
protect your health and the health of others.
What
is self-quarantine?
You might be asked to practice self-quarantine
if you have recently returned from traveling to a part of the country or the
world where COVID-19 is spreading rapidly, or if you have knowingly been
exposed to an infected person.
Self-quarantine involves:
- Using
standard hygiene and washing hands frequently
- Not sharing
things like towels and utensils
- Staying at
home
- Not having
visitors
- Staying at
least 6 feet away from other people in your household
Once your quarantine period has ended, if you
do not have symptoms, follow your doctor’s instructions on how to return to
your normal routine.
What
is isolation?
For people who are confirmed to have
COVID-19, isolation is appropriate.
Isolation is a health care term that means keeping people who are infected with
a contagious illness away from those who are not infected. Isolation can take
place at home or at a hospital or care facility. Special personal protective
equipment will be used to care for these patients in health care settings.
What
is “flattening the curve?”
On a graph, a sudden surge in patients over a
short time could be represented as a tall, narrow curve.
On the other hand, if that same large number
of patients arrived at the hospital at a slower rate, for example, over the
course of several weeks, the line of the graph would look like a longer,
flatter curve.
In this situation, fewer patients would arrive
at the hospital each day. There would be a better chance of the hospital being
able to keep up with adequate supplies, beds and health care providers to care
for them.
Lessening
Coronavirus Impact
It’s important to know what to do
if you feel sick. The coronavirus pandemic is making everyone
aware of handwashing and protecting others from coughs and sneezes. Along with
those essential steps, practices such as social distancing, and self-quarantine
and isolation when appropriate can slow the rate of infection in a city, town
or community.
The pandemic can seem overwhelming, but in
truth, every person can help slow down the spread of COVID-19. By doing your
part, you can make a big difference to your health, and that of others around
you.
Comments
Post a Comment