Nicholas A. Christaki, “Apollo’s Arrow: The Profound and
Enduring Impact of Coronavirus On The Way We Live, Little Brown, 2020, 324
pp.
Note that this book was written between March and
August 2020.
Sociologist, physician, and author Nicholas Christakis, who directs the
Human Nature Lab at Yale, offers a deeply informative overview of the
coronavirus pandemic, taking into consideration the biology of the pathogen and
the social, economic, psychological, and political impacts of the virus on
society. Drawing on scientific, medical, and sociological research, he assesses
the virus transmission, responses worldwide, and prognosis for the
pandemic’s end. In addition, he places Covid-19 in the context of past
epidemics: plague in ancient Athens, the Black Death in medieval Europe, polio
epidemics in 1916 and the 1950s, influenza in 1918, and HIV in the 1980s. “It’s
very important to emphasize that, as bad as COVID-19 is,” writes the author,
“it’s not remotely as bad as epidemics of bubonic plague, cholera, or smallpox
that have killed much larger fractions of the population and that have had much
larger and longer-lasting effects.” Nevertheless, he underscores the disastrous
effect of inadequate responses, especially from the Trump administration: a
“botched” rollout of early tests, lack of coherent national strategy, and
repeated “denial and lies.” It’s inarguable, he writes, that “the lack of
scientific literacy, capacity for nuance, and honest leadership hurt us.”
Christakis emphasizes the importance of wearing masks
and enforcing social distancing, two interventions that slow the spread of the
virus, which is essential while treatments and vaccines are being developed.
While acknowledging “colossal uncertainty” about the future of the pandemic, he
predicts that at least until 2022, Americans will live in a changed world. It
will be necessary to wear masks, abstain from shaking hands, avoid crowds, and
receive medical care online rather than in person. Hopefully, he writes, “one
of the unexpected impacts…may be that a society that feels besieged by the
threat of the virus will increasingly treat scientific information, and not
just scientists, seriously.”
Notes:
Ro: Ro is a measurment of the capacity of the pathogen to start an outbreak, it reflects the degree
to which the pathogen is infectious, absence any measures to control it. (i.e.,
no masks, crowded indoor assembly, etc)
Re: The
Re factor reflects the
real-time spread of the epidemic later in the course, when the population is no
longer naïve and they begin to socially distance, wear masks, etc.
CFR: Case Fatality Rate.
Pg. 9: By
January 25, 2020, nearly all of China was shut down. People were required to shelter in their
homes and were given permission to leave only once or twice a week for
essentials. All people retained six feet
of separation and everyone wore a mask in public. Schools were moved online for millions of pupils. At least one person had Sars-2 in the US
state of Washington by the middle of January.
However, it wasn’t until the middle of March that the threat was widely
acknowledged in the US.
Pg. 20: Modern
genetic techniques are available for understanding the fundamentals of the
virus and ascertaining where it spread and if it changed (mutated). Changes occur at fairly regular intervals,
one tiny mutation every two weeks, on average.
By studying these cumulative haphazard mutations collected from many
thousands of specimens around the globe, scientists can reconstruct the
movement of the virus (if testing is adequate).
Pg. 24: The US
had placed broad travel restrictions on China on January 31 2020, on Iran on
February 29, and on Europe on March 11. By March 19, 2020, the virus had been detected
in all fifty US states. On March 11,
WHO declared Covid-19 to be a pandemic.
As of April 1 there were 219,622 known cases and 5,114 deaths in the US
and 936,851 cases and 47,210 deaths worldwide.
By July 1, there were 130,761 recorded deaths in the US and 518,135
deaths worldwide—and no end in sight.
Pg. 26f: Covid-19 is the disease caused by the virus
Sars-2. As respiratory infections
go, Covid-19 is particularly protean, encompassing a great variety of symptoms,
from fever to cough to muscle pain to the loss of the sense of smell. The symptoms that a patient experiences
depend in part on which cells in the body the virus infects and how the body
responds immunologically. The primary
form of the disease is respiratory and involves cough and fever, the two most
common symptoms, and shortness of breath.
Less common are musculoskeletal symptoms and gastrointestinal
symptoms. But many other symptoms—such
as rash, headache, dizziness can occur. Perhaps half of those infected are asymptomatic.
The death rate is near 1 percent, overall.
(may be as high as 1 in 5 for those over age 70).
Pg. 29-45:
Plagues have been with us since we began living in large enough groups
in cities about three thousand years ago.
For instance, there was the plague of Athens in 430 BCE, plague of Justinian
in 541 CE, the Black Death in 1347, and Spanish Flu in 1918. And in 2003, we faced the first pandemic of a
coronavirus that closely resembles the one of 2020. Reviewing how it differed from SARS-2 helps
shed light on why and how the pandemic of 2020 came to be so very serious. The 2003 SARS-1 pandemic also started in
China and also came from bats. It too
spread far and wide, reaching the US and twenty-nine other countries. Efforts to respond to SARS-1 were so
successful that WHO declared the pandemic contained on July 5, 2003. Only 8,422 people had been infected
worldwide. As SARS-1 was much more
deadly than SARS-2, it killed its victims so rapidly that the pathogen did not
have much time to spread. This is also
why the super deadly Ebola epidemics tend to burn out.
Pg. 45f: The
2003 outbreak of SARS-1 infected only 8,422 people worldwide, 916 died and
health-care workers accounted for 20 percent of the deaths. Since the disease killed 916 out of 8,472
cases, its CFR is computed by dividing cases by deaths which yields 10.9. When a disease is this deadly, it kills its
victims so rapidly that the pathogen does not have much time to spread. On the other hand, it is hard to compute the
SARS-2 CFR as the denominator and numerator are difficult to determine at this
point. However, the CFR for
Covid-19 is estimated to be between 0.5 and 1.2 percent. (The
problem with this calculation is that the CFR for the entire population is much
lower than for segments, like the elderly in nursing homes or on a cruise
ship).
Pg. 51: When
the reproduction number (whether the Ro
or Re) is above 1, it
means the number of cases will grow.
Some pathogens are more transmissible than others and spread very easily
from one person to another while other pathogens are much less infectious. For instance, measles is one of
the most infectious diseases known with an Ro estimated to be 12 to
18 (that is, a single infected person typically can infect between
12 and 18 people). Chicken pox is 10 to
12; Smallpox 3.5 to 6; Ebola 1.5 to 1.9; and seasonal influenza 0.9 to 2.1. Most estimates place the Ro
of SARS-2 at about 3.0 while the ordinary flu is at 0.9 to 2.1. So, SARS-1
was 10 times deadlier than SARS-2.
Pg. 58ff: The
environment may facilitate super-spreading events, such as the SARS-2 outbreak
in a Washington State choir in March 2020.
The act of singing involves the expulsion of air at high force. In this case, an infected person was part of
a group of sixty-one singers who were in a densely packed area for two and a
half hours. As many as fifty-two of them
caught the virus from the index case; three of them were hospitalized, and two
of them died.
Pg. 67: The
1918 flu pandemic killed around thirty-nine million people worldwide, 550,000
of them in the US; some experts put the worldwide toll as high as one hundred
million. Life expectancy was still low
in the US at the time (for men in 1915 it was 52.5 years, women 56.8 years).
Pg. 74: Using the calculus of ‘Excess Deaths’ it
appears that Covid-19 reported death rates are at least 22 percent too low.
Pg. 78: The
bubonic plague is estimated to have killed around two hundred million people
over the fourteen hundred years it ravaged worldwide populations, primarily in
three major pandemics beginning in the sixth, fourteenth, and nineteenth
centuries. Of these, the plague
beginning in 1347 and lasting until 1353, is what we think as the Black Death
wiped out as much as half the population of Europe. (This had a big influence on ending feudalism
as help was hard to find). The plague
can be cured today with streptomycin or tetracycline.
Pg. 94: The
shutdown of the US in the spring of 2020 may have prevented sixty million cases
and probably more than three hundred thousand deaths during the acute shock of
the first wave of the pandemic.
Pg. 99: The herd immunity threshold can be calculated by the formula (Ro-1)/
Ro which using 3.0 for
SARS-2 means that 67 percent of the population must be immune. However, this calculation assumes that all
people in the population have an equal chance of exposure, which is patently
false as some people have fewer interactions than others. So, herd immunity may actually occur at 50
percent.
Pg. 106: In the
summer of 2020, Georgia, Governor Brian Kemp, in defiance of good public health
practices, explicitly banned cities and counties from enacting rules requiring
masks.
Pg. 115: Many
countries around the world had started testing for the virus by early 2020, but
not the US. First, the CDC released a
test that was flawed. Second, the FDA
refused to allow hospital labs to develop their own tests, even though most
elite hospitals in the US could do this.
Third, the Department of Health and Human Services took its time to work
with outside labs to increase the availability of commercial tests and did not
get it done until it was too late. (this
was the period of time that Trump was claiming we tested too much).
Pg. 116: The
lack of federal coordination for testing in the US, prompted by the undue
politicization of the pandemic, severely hampered the US ability to identify
reservoirs of infection. As a result,
its presence continued to grow exponentially to the point where it became
impossible to do contact tracing at all.
When contact tracing became impossible, physical distancing had to be
implemented. By March 22, 2020, New York City had become the epicenter of
the pandemic in the US, accounting for approximately 5 percent of the world’s
confirmed cases.
Pg. 153: On
February 25, 2020 Dr. Nancy Messonnier, a CDC official who was the director of
the National Center for Immunization and Respiratory Diseases noted during a
press conference that the CDC was preparing for a pandemic. Trump wanted her fired. (Subsequent leaks
revealed that Trump had been presented with information about
the seriousness of the virus and its pandemic potential beginning at least in
early January 2020).
Pg. 166: As
late as May 18th Trump again championed the use of hydroxychloroquine
announcing that he was taking the drug preventatively. Interestingly, an analysis of two hundred
million tweets about the pandemic collected from January through May 2020 found
that 62 percent of the top one thousand retwetters were bots originating from
Russia and China. The bots really
weighed in on online conversations regarding ending stay-at-home orders and
‘reopening America.” There is increasing
evidence that the Chinese and Russian governments have a long-standing and
ongoing program in place to undermine Americans confidence in science and
scientists. (In early May Trump framed
the pandemic as an attack by China).
Pg. 183: The mortality rate for Covid-19 varies
widely with age. Overall, mortality
among those under twenty is very low, on the order of between one and three
people dying out of ten thousand who get sick.
For patients in their late fifties, this rises to about one in one
hundred. For patients
eighty or older, it rises to about one in five. Overall men suffer 50 percent more mortality
than women. (So, if a person is less
than age 70, the risk of death is less than 1 percent).
Pg. 228: Until
Covid-19 vaccine development, one of the fastest vaccines ever developed was
the vaccine for the Ebola virus which took five years to approve in 2019. The usual time frame had been ten years. Yet, for many diseases it has been impossible
to develop a vaccine. After four decades
we still do not have a vaccine against HIV, nor for the common cold. Moderna developed a vaccine for Covid-19 in
just forty-two days after the gene sequence of the virus was published in
China.
Pg. 271: The
pandemic has reshaped the US economy. On
March 27, 2020, Congress passed the trillion dollar rescue package. American GDP fell by 9.5 percent and had an
annualized decline of 32.9 percent—a drop so rapid and deep that it was
unprecedented in our history. Nearly
five years of growth had been wiped out.
Addenda:
Pg. 100f: At
the beginning of the Covid-19 pandemic, some officials, including in the US, proposed just letting the epidemic take its
course and get it over with. The UK
toyed with this idea but then rejected it.
However, Sweden did adopt this course.
By May 2020 they had at least four times the rate of Covid-19 deaths as
its Nordic neighbors with similar demographics and economies. Ultimately they admitted the policy had not
worked out and their economy was just as hard-hit as the economies of its
neighbors who had pursued full lockdowns.
Physical and economic health are inextricably linked.


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