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"The
Real Truth: Vaccination Inefficacy in the Reduction/Elimination
of Infectious Diseases" The fatal tendency
of mankind to leave off thinking about a thing which is no
longer doubtful is the cause of half their errors
-- John Stuart Mill
In 1949, the DTP vaccine was licensed to prevent diphtheria, tetanus,
and pertussis (whooping cough) issuing forth the modern use
of vaccines in the prevention of childhood illnesses. Polio
immunization was later introduced to prevent that dread disease.
In 1963, the measles vaccine was licensed and was combined
with mumps and rubella toxoids to create the MMR vaccine. In
more recent times the hepatitis B and chickenpox vaccines have
been developed and incorporated into our healthcare system.
Now a child can expect to receive up to 33 vaccines during
their childhood with more vaccines on the horizon, such as
herpes zoster (shingles), West Nile virus, influenza, pneumococcal,
HIV, and many more.
The belief that
vaccines are safe and effective is pervasive in today’s society.
The vast majority of the medical, public, and government communities
have a well-established belief system in the benefits of vaccines.
Even children’s books show how important it is to “get a shot
from the doctor to keep us well.” Our belief system is so ingrained
that we look to medical science to create new vaccines to protect
us from everything from AIDS to ear infections.
Unlike almost
any other health-related issue in the free world, governments
mandate many vaccines for the theoretical public good. In the
United States, all 50 states require a large number of vaccinations
before children are allowed to attend public schools or day care
centers. Although most states have religious and medical exemptions,
with some having a philosophical exemption, public and medical
officials exert a great deal of pressure to vaccinate. The pervasive
attitude that plagues will return and ravage the western world
without everyone giving their child a full set of vaccinations
is a powerful force in modern society.
One of the chief
concepts that vaccine proponents tell us, and that we generally
believe in modern society, is that the use of vaccines is responsible
for the virtual elimination of many childhood scourges that used
to ravage the world. We are told, and assume, that in the 1800s
and early in the 1900s many diseases killed a large number of
people, and that vaccines were invented and stopped these diseases
from being a threat. But is this in fact the case? An immunization
booklet produced by the CDC (Centers for Disease Control) states
the following:
“Why are baby
shots so important? These shots protect your baby from nine diseases:
measles, mumps, rubella (German measles), diphtheria, tetanus,
pertussis (whooping cough), polio, Haemophilus influenzae type
b (Hib disease), and hepatitis B. Are these diseases very serious?
Today we might not think of these diseases as being very serious
because thanks to vaccines, we don’t see them as often as we
used to. … Measles used to kill hundreds – sometimes thousands – of
people a year. In the 1920s, over 10,000 people a year died from
diphtheria.”
“Years ago, diphtheria
was a widespread and greatly feared disease. Through the 1920s,
it struck about 150,000 people a year and killed about 15,000
of them. Since then these figures have dipped considerably, thanks
to parents who have gotten their children vaccinated against
this terrible disease. There were only 918 cases in 1960, 435
in 1970 and 128 in 1976. Today, only a few cases occur each year.”
“Before measles
vaccine was available, nearly all children had measles by the
time they were 15 years old. An average of 530,000 cases a year
were reported in the United States during the 10 years before
vaccine was available. And during each of these years, over 450
people died because of measles. Now, thanks to the measles vaccine,
the number of measles each year is a fraction of what it was
then.”[1]
These statements
are certainly compelling. On the face of it, we cannot help but
assume that vaccines have played a key role in improving all
of our lives. But looking carefully at the evidence over a longer
period of time reveals a different picture of disease evolution
and the role vaccines have played. One Swiss scientist that analyzed
data over a longer period of time came to a different conclusion
of what occurred in Switzerland:
“An analysis
has been made of the evolution in Switzerland of mortality due
to the main infectious diseases ever since the causes of death
began to be registered. Mortality due to tuberculosis, diphtheria,
scarlet fever, whooping cough, measles, typhoid, puerperal fever
and infant gastro-enteritis started to fall long before the introduction
of immunization and/or antibiotics. The decline was probably
due to a great extent to various factors linked to the steady
rise in the standard of living: qualitative and quantitative
improvements in nutrition; better public and personal hygiene;
better housing and working conditions and improvements in education.”[2]
In that research
paper, several graphs of death rates in Switzerland show massive
drops in deaths from disease long before vaccinations are introduced.
One graph shows diphtheria death rates for children from 0 to
14 years of age peaking at over 200 deaths per 100,000 in the
late 1800s. This is followed by death rates decreasing to less
than 10 deaths per 100,000 near the time of the introduction
of the vaccine in the mid 1930s. There was an apparent 95 percent
decrease in diphtheria death rates before introduction of the
vaccine. Another graph within the same study shows scarlet fever
decreasing from 200 deaths per 100,000 in the late 1800s to virtually
zero by the 1930s before drug treatments were introduced. Yet
another graph in the study shows typhoid also decreasing from
50 deaths per 100,000 in 1876 to virtually zero by the 1940s
when drug treatments were introduced.
A review of “Childhood’s
Deadly Scourge” states:
“During the last
two decades of the 19th century diphtheria was the leading cause
of death of toddlers in the industrialized world, in some cities
killing more than a thousand in a single year. In contrast, since
1980 fewer than 100 cases have been reported in the entire United
States. Although diphtheria is hardly the only infectious disease
to have thus faded, its story is unique because the early period
of its decline can be directly linked to advances in bacteriologic
knowledge and practice. Between 1880 and 1930 health authorities
in New York City were responsible for much of the practical innovation
in the control of diphtheria, as well as a good share of scientific
progress.”[3]
The Vital Statistics
of the United States contains compiled statistics for a wide
variety of information since early in the 1900s. Among those
are death rates from all diseases, including infectious diseases.
An introductory statement from the 1937 statistics indicates
that death rates from infectious diseases declined greatly in
the early part of the century. These declines occurred well before
the advent of vaccines to treat these conditions.
“The trend in
death rates for specific causes, over the past 20 or 30 years,
may be characterized by two general statements. In the first
place, there has been a great reduction in the death rates for
infectious and preventable diseases; in the second place, there
has been an increase in the rates for certain diseases characteristic
of older ages. Greatest proportional rate decreases have taken
place for such diseases as typhoid and parathyroid fever, which
has declined from a rate of 23.5 in 1910 to 2.1 in 1937; and
diphtheria, which declined from a rate of 21.4 in 1910 to 2.0
in 1937. … The rate reductions for infectious and preventable
diseases can be largely attributed to the development of modern
public-health practice.”[4]
From these figures,
we can see that death rates from typhoid decreased by 91% from
1910 to 1937 and death rates from diphtheria declined by 90.5%
during the same time period. The decrease in diphtheria occurred
well before the use of vaccination.
An even a more
recent editorial statement from the Journal of Pediatrics states
that proper sanitation was largely responsible for the early
large declines in infectious diseases.
“… the largest
historical decrease in morbidity and mortality caused by infectious
disease was experienced not with the modern antibiotic and vaccine
era, but after the introduction of clean water and effective
sewer systems.”[5]
Again, in
a 2001 paper in the Journal of Infection Control:
“The conquest
of infectious disease and the health revolution it initiated
is arguably one of the greatest achievements of Western civilization.
Yet the phenomenon is largely unknown and rarely taught, even
in history courses. Conventional wisdom usually assumes that
conquest of infectious disease can be credited to well-known
lifesaving innovations in medicine such as vaccines, antibiotics,
and surgical asepsis. These icons are truly essential ingredients
of modern medicine, and their contribution to human life and
health in this century can never be minimized. However, except
for the smallpox vaccination, which was introduced in 1798 and
made compulsory in England in 1853, the overall contribution
of medical innovations to the health revolution of the 1800s
is difficult to validate. Diphtheria, tetanus, and pertussis
vaccine arrived on the scene only after disease mortality rates
already had been reduced significantly; measles, rubella, and
polio vaccines did not become available until the middle of the
20th century, when most infant deaths were the result of other
causes. The same holds true for sulfa drugs and antibiotics.
Their contribution is unequivocal, but they did not affect mortality
rates until the 1940s.” [6]
Another paper
published in the premier medical journal The Lancet in 1977 by
the Department of Community Medicine in the United Kingdom also
indicates that vaccines were not responsible for the decline
in disease rates in that country.
“There was a
continuous decline [whooping cough deaths], equal in each sex,
from 1937 onward. Vaccination, beginning on small scale in some
places around 1948 and on a national scale in 1957, did not affect
the rate of decline if it be assumed that one attack usually
confers immunity, as in most major communicable diseases of childhood. … The
steady decline of whooping cough between 1930 and 1957 is predictive
of a linear exponential decay characteristic of a general and
progressive lessening in the volume and spread of infection among
the susceptible population. With this pattern well established
before 1957, there is no evidence that vaccination played a major
role in the decline in incidence and mortality in the trend of
events.”[7]
The author’s
conclusion that “there is no evidence that vaccination played
a major role in the decline in incidence and mortality” is quite
monumental and far different than the general public perception.
Thomas McKeown
who was Professor of Social Medicine in the University of Birmingham
Medical School between 1950 and 1978, is still regarded as a
major social philosopher of medicine, and known for his important
works on epidemiology and the practice and purpose of medicine.
His conclusion was also that diseases were declining well before
medical interventions such as vaccinations came into standard
use.
“The distinguished
epidemiologist Thomas McKeown (1912-1988) maintained that reductions
in deaths associated with infectious diseases (air-, water-,
and food-borne diseases) cannot have been brought about by medical
advances, since such diseases were declining long before effective
means were available to combat them.” [8]
Another author
shows that disease and mortality was falling before the advent
of vaccines or drug therapies:
“… in 1869 there
were 716 deaths from typhus in London; by 1885 this had been
reduced to 28; and at the beginning of the twentieth century
there was none. Similar declines could be given for other infectious
diseases. Tuberculosis began a remarkable disappearing act. Killing
perhaps 500 out of every 100,000 Europeans in 1845, consumption
slowly but continuously sank to 50 per 100,000 by 1950. Curative
medicine played little part in that transition. The disappearance
began before Koch discovered the tubercle bacillus. By the time
antibiotics entered the picture, TB in cities such as New York
had fallen to eleventh place in the death lists. And the mortality
graphs for most of Europe’s fatal crowd diseases all dived before
antibiotics had been marketed. Whooping cough killed 1400 children
out of every million in 1850, but one hundred years later whooping
deaths were less than 10 per million. Scarlet fever behaved in
the same way. Measles, typhus, pneumonia, dysentery and polio
all share similar histories. Their retreat had a dramatic impact
on the European population. By 1900 civilization had lost its
biological population check: infectious disease. After centuries
of hostile encounters, humans and microbes found a new adjustment
with little interference from drugs or vaccines. In some cases
the microbe became less virulent (measles and diphtheria) or
the human host more resistant (tuberculosis).” [9]
In the view of
this, how can the statements made by the CDC on how “thanks to
vaccines” diseases are a thing of the past be correct? Back in
1924 Mark Twain was quoted as saying, “There are three kinds
of lies — lies, damned lies, and statistics.” When Mark Twain
made this statement, his point was that numbers could be manipulated
by the unscrupulous to misrepresent facts, to justify a particular
bias, or fulfill a particular agenda. It is an unhappy fact of
modern life that anyone with an idea can support that idea with
statistics. The less the public knows about the source of the
statistics, the more possible it is to have misinformation posing
as scientific results.
Simple statements,
such as “in the 1920s, over 10,000 people a year died from diphtheria”,
although accurate are very misleading. Providing a piece of historical
fact without any real context and mixing it with statements on
how vaccines helped cure these diseases leads the reader to erroneously
conclude that vaccines were instrumental in the massive declines
of deaths from these diseases.
The CDC’s statements
on vaccines only provide a few facts and then draw a conclusion
on this limited information. To understand the role of vaccines,
we must use the raw information and analyze it over a long period
of time. The Vital Statistics of the United States provides the
most accurate information of death rates from various causes
starting early in the 1900s.[10]
Figure 1 is a graph of the death rates from measles, typhoid,
scarlet fever, whooping cough (pertussis), and diphtheria. Both
the pertussis and diphtheria vaccines were made widely available
in 1949 and the measles vaccine was introduced in 1963.

Figure 1. Death
rates from infectious diseases
This graph shows
that large drops in disease death rates occurred long before
vaccines were introduced. From 1900 to 1963, when the measles
vaccine was introduced, death rates from measles had declined
from 13.3 per 100,000 to 0.2 per 100,000 – a 98% decrease. From
1900 to 1949, death rates from whooping cough declined from 12.2
per 100,000 to 0.5 per 100,000 – a 96% decrease. From 1900 to
1949, death rates from diphtheria declined from 40.3 per 100,000
to 0.4 per 100,000 – a 99% decrease. These are clear and major
changes in the severity of diseases well before any vaccines
were introduced. Close up views (figures 2-4) of the diphtheria,
pertussis, and measles death rates show this dramatic drop well
before vaccination programs began.

Figure 2. Death
rates from Diphtheria

Figure 3. Death
rates from Pertussis

Figure 4. Death
rates from Measles
Similarly, in
England and Wales we find the same decline in disease mortality.
The data for the disease mortality was recorded 50 years earlier
than in the United States, beginning in 1850. [11]
From 1850 to
1968, when the measles vaccine was introduced, death rates from
measles had declined from a range of 52.11 to 26.6 per 100,000
to 0.11 per 100,000 – a range of 99.8% to 99.6% decrease. From
1860 to 1955, death rates from whooping cough declined from a
range of 43.73 to 60.86 per 100,000 to 0.2 per 100,000 – a 99.5%
to 99.7% decrease. From 1859 to 1940, death rates from diphtheria
declined from a range of 49.2 to 22.7 per 100,000 to 6.77 to
1.83 per 100,000 – a 96.2% to 70.2% decrease. The exact decrease
in mortality is difficult to obtain because the mortality from
these diseases fluctuated from year to year, and the exact introduction
of a vaccination and number of people vaccinated each year is
difficult, if not impossible, to obtain. However, it is clear
that death rates in England did to a large extent decline before
vaccinations were widespread.
Figure 5 is a
graph that shows the mortality rate declines in England and Wales.
The gap from 1891 to 1900 is because data was not acquired for
those specific dates.

Figure 5. Death rates from infectious diseases in England and Wales
The modern era
of vaccines actually began with the advent of the vaccine against
smallpox. Edward Jenner was aware of the belief that people who
contracted cowpox never contracted smallpox. He hypothesized
that inoculating people with cowpox would immunize them against
smallpox. On May 14, 1796, he inoculated an eight-year-old boy,
named James Phipps, with matter taken from a cowpox pustule.
Phipps developed coxpox and quickly recovered. Several weeks
later, Phipps was inoculated with smallpox and did not contract
the disease. In 1798, Jenner reported his work in the book, “An
Inquiry into the Causes and Effects of the Variolae Vaccine.” This
book prompted the medical professionals of the time to adopt
the practice of vaccination. The vaccine was introduced in England
in 1798. It was later made compulsory in 1853 through the Compulsory
Vaccination Act, and then in 1867, an even more stringent law
was passed to enforce vaccination.
Looking at the
raw data from England during that era [12],
as shown in Figure 6, we see that despite enforced vaccinations
against smallpox there was no significant decrease in deaths
from smallpox. In fact, three major epidemics during 1857-1859,
1863-1865, and 1871-1872 occurred, even though there was a high
vaccination rate. The last major epidemic in 1871-1872 had death
rates of 101.2 and 82.1 per 100,000 people respectively, occurring
just four years after a newer and more strict vaccination law
was enacted in 1867.

Figure 6. Death rates from smallpox and scarlet fever in England.
Another interesting
point is that the smallpox disease cycle of decreased deaths
and epidemics appears closely tied to the scarlet fever disease
cycle. Just as there was a large decrease in scarlet fever deaths
after 1885, there was simultaneously a decrease in smallpox deaths.
It is important to remember that death from scarlet fever, which
was the worst of infectious diseases in that era, was eliminated
without any vaccination program.
Figure 7 shows
that vaccination coverage had no apparent affect on smallpox
deaths. As coverage fell to from a high of 86% in 1879 to 61%
in 1898 there was no resurgence of smallpox deaths. There was
a small increase in smallpox deaths to 7.5 per 100,000 people
as vaccine coverage rates again increased to 71.8% in 1902, but
there after, as vaccine rates fell to below 40%, there was no
increase in smallpox deaths. In fact, after 1905, deaths from
smallpox almost completely vanished.
Figure 7. Smallpox
deaths and vaccination percent of births.
We must also
remember that deaths were directly attributable to the smallpox
vaccine. Figure 8 shows the deaths per 100,000 that were caused
by the smallpox vaccine. Although the number of people that died
from the vaccine is small compared to the number of people that
were killed directly by smallpox, after 1888 there were years
that the deaths from the vaccine was close to or exceeded that
from the disease itself (e.g. 1889 – smallpox: 23, vaccine: 58;
1890 – smallpox: 16, vaccine: 43; 1891 – smallpox: 49, vaccine:
43). After 1905, as can be seen in Figure 9, the number of deaths
from smallpox and vaccination were very close to one another.
In point of fact, after 1905, a person was almost as likely to
die from the vaccine for smallpox as from the disease itself.

Figure 8. Deaths per 100,000 from cowpox and other effects of vaccination.

Figure 9. Actual smallpox and smallpox vaccination deaths.
Another interesting
point of note is that certain diseases that also once killed
many people declined and vanished without any assistance from
mass vaccination programs. Typhoid death rates of 10s per 100,000
each year was not uncommon. Scarlet fever once killed large numbers
of people at a death rate of 100 or more per 100,000 each year.
While quite deadly during their prime, these two “killers” were
in effect eradicated due in large part to advances in hygiene
and a better understanding of germ activity. The Canadian Medical
Journal contains the following statements in an advisory statement:
“Typhoid fever
is caused by Salmonella typhi, which affects only humans, often
causing serious systemic illness. The organism is generally transmitted
by the feces or urine of the people with the disease or those
who are the S. typhi carriers. The death rate is approximately
16% for untreated cases and 1% for those given appropriate antibiotic
therapy. … The incidence of typhoid fever is very low in all
of the industrialized countries. Approximately 70 cases are reported
in Canada and 190 in the United States annually. The low incidence
of typhoid fever in these countries is attributable to improved
living conditions, better drinking-water quality and the treatment
of sewage. The vaccine does not seem to play an important role
in maintaining this lower incidence. Most infections occurring
in the industrialized countries are acquired elsewhere. … It
is certain that vaccination does not afford adequate protection
when heavily contaminated foods are ingested. … There cannot
be too much emphasis placed on hygiene and food precautions;
these measures appear to be the most effective protection against
the disease.”[13]
If the forces
of improved living conditions, better drinking water quality
and the treatment of sewage virtually eliminated illnesses such
as typhoid and scarlet fever, then isn’t it reasonable to consider
that other diseases, such as measles and pertussis, would have
had similar fates? An analysis of the death rates for all these
diseases does support this idea. The Conquest of Disease by Thurman
B. Rice, MD from 1932 states:
“The benefit
of pure water is expressed not only by the lowering of the typhoid
rate but also in a considerable lowering of other death rates,
and even of the general death rate. … Why has the death rate
[for Scarlet fever] markedly fallen in the days before the cause
of the disease was understood? It must be remembered that a given
germ is only part of the cause of a disease; there are often
many other very important contributing, predisposing, or determining
factors. As housing conditions were improved, as the general
laws of sanitation, ventilation, and personal hygiene came to
be better understood; as we came to insist on individual drinking
cups; fresh air in bedrooms, and frequent bathing; as doctors
became more proficient in treating the infection so as to prevent
its serious complications and sequelae; as boards of health became
more efficient in the enforcement of public health laws; as methods
of isolation and disinfection were better understood the death
rate declined accordingly.”[14]
Again, the major
decline in mortality rates can be attributed to improvements
in proper hygiene, not only at a societal structural level, but
also due to major changes in attitude in personal hygiene.
“In addition
to the seminal and recognized role of environmental hygiene,
a substantial but overlooked component of the health revolution
was the transformation in personal hygiene practices and cleanliness.
The transformation probably started in the early 1800s, became
extremely popular from 1890 to 1915, and has since become an
essential feature of “civilized” behavior in the United States
and Europe. It is proposed that this mass behavioral changes
in washing, bathing, laundering, and domestic hygiene practices
contributed significantly to the continuing reduction of illness
and death rates at the beginning of the 20th century.” [15]
It would appear
that, at best, vaccines could be credited with only a tiny fraction
of the overall decline of disease deaths in the 1800s and 1900s.
Because death rates were declining, it is impossible to say whether
vaccines had a real effect or if that the same forces that caused
the majority of the decline would have continued to have a positive
impact. Those forces were primarily that of improved sanitation,
proper personal hygiene, improved diet, and the natural cycles
of disease.
Based on our
knowledge that proper sanitation, improved living conditions,
and improved nutrition were the key factors that caused declines
in these diseases, we can ask the question: are the present deaths
and complications from these diseases in people of poor socioeconomic
or compromised nutritional status? Is it possible that the focus
on mass vaccination programs diverted attention from continued
improvements in sanitation and nutrition that could have further
reduced or eliminated disease deaths and complications?
It would seem
that the people who recognized the underlying cause of diseases
and instituted better living conditions, proper water and better
sanitation should be recognized for their remarkable achievements,
not the inventors and promoters of vaccines. This analysis, which
is based on historical and scientific studies, is a far different
picture than the one alluded to by the CDC in their vaccine literature.
Because the focus
has predominantly been on medical intervention, the history of
what really caused the decline in disease mortality is “largely
unknown” and “rarely taught”. The information that disease death
declined before vaccination is important in the present day because
we need to pay attention to these underlying causes of infectious
disease. We must be ever vigilant to avoid returning to those
disease-causing conditions and to examine these conditions when
disease outbreaks occur. It is an important lesson in how we
should approach disease prevention in third world countries.
We should not forget the words of George Santayana: "Those who
cannot remember the past are condemned to repeat it."
--------------------------------------------------------------------------------
Footnotes:
[1] Parent’s
Guide to Childhood Immunization. U.S. Department of Health and
Human Services, Public Health Service, Centers for Disease Control
and Prevention, National Immunization Program, Atlanta Georgia
30333, 1993, pp. 1, 7, 21
[2] Gubéran,
E., “Tendances de la mortalité en Suisse”, Schweiz. Med Wschr.
110, 1980, pp. 574-583
[3] Morman, E.T., “Childhood’s
Deadly Scourge: The Campaign to Control Diphtheria in New York
City, 1880-1930”, The Journal of the American Medical Association,
April 12, 2000 Vol. 283, p. 1889
[4] Vital Statistics
of the United States 1937 Part I, U.S. Department of the Census,
1939, p. 11
[5] “Zinc, diarrhea,
and pneumonia (editorial)”, The Journal of Pediatrics, December
1999, Vol. 135, No. 6, p. 663
[6] Greene, Velvl
W., PhD, MPH, “Personal hygiene and life expectancy improvements
since 1850: Historic and epidemiologic associations”, American
Journal of Infection Control (AJIC), August 2001, Vol. 29, No.
4, pp. 203-206
[7] Steward,
Gordon T., “Vaccination Against Whooping-Cough Efficacy Versus
Risks”, The Lancet, January 29, 1977, pp. 234-237
[8] Porter, Roy, “The
Greatest Benefit to Mankind”, Harper Collins Publishers, 1997,
p. 426
[9] Porter, Roy, “The
Greatest Benefit to Mankind”, Harper Collins Publishers, 1997,
p. 427
[10] Vital Statistics
of the United States 1937 Part I, U.S. Bureau of the Census,
1939, pp. 11-12; Vital Statistics of the United States 1938 Part
I, U.S. Bureau of the Census, 1940, p. 12; Vital Statistics of
the United States 1943 Part I, U.S. Bureau of the Census, 1945;
Vital Statistics of the United States 1944 Part I, U.S. Bureau
of the Census, 1946, p XXII-XXIII; Vital Statistics of the United
States 1949 Part I, U.S. Public Health Service, 1951, p. XLIV;
Vital Statistics of the United States 1960 Volume II – Mortality
Part A, U.S. Department of Health, Education, and Welfare, 1963,
p. 1-25; Vital Statistics of the United States 1967 Volume II – Mortality
Part A, U.S. Department of Health, Education, and Welfare, 1969,
p. 1-7; Vital Statistics of the United States 1976 Volume II – Mortality
Part A, U.S. Department of Health and Human Services, 1980, p.
1-7; Vital Statistics of the United States 1987 Volume II – Mortality
Part A, U.S. Department of Health and Human Services, 1990, p.
11; Vital Statistics of the United States 1992 Volume II – Mortality
Part A, U.S. Department of Health and Human Services, 1996, p.
12; Historical Statistics of the United States – Colonial Times
to 1970 Part 1, Bureau of the Census, p. 58
[11] Mortality
in England and Wales for 95 years as provided by the Office of
National Statistics - Published 1997;
[12] Written
answer by Lord E. Percy to Parliamentary question addressed by
Mr. March, M.P., to the Minister to Health on July 16th, 1923
[13] “Statement
on overseas travelers and typhoid fever”, Canadian Medical Association
Journal, 1994, 151, pp. 989-990
[14] Rice, Thurman,
A.M., MD The Conquest of Disease, The Macmillan Company, 1932,
pp. 68, 121-122
[15] Greene,
American Journal of Infection Control (AJIC), August 2001, Vol.
29, No. 4, pp. 203-206
Roman Bystrianyk
is an investigative reporter for HealthSentinel.com
Last update on
February 23, 2003
--------------------------------------------------------------------------------
This information
is intended for educational purposes only and should not be used
as a substitute for professional medical care. If you have or
suspect you have a serious health problem, you should consult
a qualified health care provider. |
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