Title: Human health costs of animals diseases
1Human Health Costs ofAnimal Diseases
2Human health costs of animal diseases
- These costs take a number of form, but by far the
most important is protein-calories malnutrition
(PCM) - Today from this clinical consequence of hunger
and nutritional imbalance than from any other
disease - WHO estimated among children 5 yrs or less there
are 100 million w/ clinically moderate to severe
PCM
3Human health costs of animal diseases
What then is the magnitude of these total
effects?
4SOCIALLY AND ECONOMICALLY DISRUPTIVE ANIMAL
DISEASES
5Rinderpests Invasion of Africa
- One result was greatest famine in recorded
Ethiopian history.
A cow dying of rinderpest
6Rinderpests Invasion of Africa
- A chief in the agricultural region of Koa had
lost 56 of his 57 plow oxen. - An Ethiopian wrote that because virtually all the
draft oxen died, the farm lands of the country
could not be plowed. - Between 1889 and 1890, prices of surviving cattle
skyrocketed and grain prices increased 100 to 200
times.
7Rinderpests Invasion of Africa
- Estimates are that the whole of Ethiopia lost
one-third of its human population to sequellae of
the rinderpest epidemic, suffering up to 80
mortality. - Southern Africa, Cape Province infection
continued to spread into 1.6 million cattle
(almost 40) died of the disease. - Kenya an estimated 90 of buffalo population
perished. -
8Rinderpests Invasion of Africa
- To these almost inconceivable social costs in
human suffering and death of the 1889-1896
rinderpest pandemic in Africa must also be added
the devastating effects it had upon the wildlife
of the continent and how this affected the
African economy as well as the health of its
population. - Rinderpest which indirectly killed untold numbers
of people and causes millions of others to suffer
grave consequences of PCM.
9Rinderpests Invasion of Africa
Rinderpests most serious depredation
Animal pathogens need not infect people directly
in order to precipitate untold human suffering
and death
Their effect upon human health are multiple ones
often reflecting far more complex problems than
result from losses of meat or milk alone
10Rinderpests Earlier Tolls in Europe
- Between 1711 and 1714, rinderpest reportedly
caused the deaths of about 1.5 million cattle in
other affected area of Europe - Germanys losses to rinderpest during the 18th
century were an estimated 30 million cattle - One-half million British cattle died
- An economy in which cattle were not only the
mainstays of agriculture, but were important
human sources overall of rural transport and of
power.
11The current Threat of Rinderpest
- Reported rinderpest deaths rapidly declined to
about 5000 per year by 1960, 2500 by 1970 and
1146 by 1978 (among a total of 2662 known cases)
in cattle population of about 200 million.
12Global Eradication of Rinderpest
- Rinderpest (meaning cattle-plague) is a
infectious viral disease of cattle, buffalo, yak
and numerous wildlife species which has caused
devastating effects throughout history. - In the 1890's rinderpest destroyed nearly 90
percent of all cattle in sub-Saharan Africa and
millions of wild animals. - Major rinderpest outbreaks last approximately 5
years and result in average of 30 mortalities in
a population. This poses a massive risk to
millions of small-scale farmers and pastoralists.
13Global Eradication of Rinderpest
- Major outbreaks of rinderpest could destroy more
than 70 million (or 14 million per year) of the
220 million cattle in Africa, With an estimated
value per head of US 120, the cost of such an
outbreak would be more than 1 billion per year
and a total of 5 billion for the whole outbreak
(figures are based on the rinderpest epidemic of
1979-1983 from FAO). - Therefore, eliminating rinderpest could be viewed
as producing a net annual economic benefit to the
African region of at least 1 billion.
14Global Eradication of Rinderpest
- Today, the world is nearly free from rinderpest
since the only evidence for surviving disease is
a small focus in the Somali pastoral ecosystem
that encompasses north eastern Kenya, southern
Somalia, and some areas of Ethiopia. - The goal of complete freedom from rinderpest from
the world is within our grasp, and this would
mark only the second example of a disease to be
eradicated worldwide, after smallpox.
15Other High-Mortality Animal Diseases
BOVINE PLEUROPNEUMONIA
- The effects of four animal disease combined to
generate sufficient political pressure upon the
U.S government to establish an American federal
veterinary service in 1883 then BAI of DA - Because of in 1843 Mr. Peter Dunn purchased a cow
from the captain of the British then his herd
became infected and spread through out dairy
farms in NY city and Brooklyn.
16Other High-Mortality Animal Diseases
BOVINE PLEUROPNEUMONIA
- During the next 4 years, pleuropneumonia from his
farm into the dairies of 20 Massachusetts then 2
areas southward along southern seaboard and quite
early It entered NJ from NY then Pennsylvania in
1860, Delaware in 1861 and Maryland, DC and
Virginia in 1868. In September 1886,
pleuropneumonia was diagnosed again in diary herd
through which cattle passed to every part of US.
- The economic effects of this destructive disease
was a drop of 10 /head (100,000 live beef
cattle)annual loss to American industry of 1
million
17Other High-Mortality Animal Diseases
NEWCASTLE DISEASE
- Was first UK 1926 then Korea 1929 then Africa
1935 and US 1971 - The total chicken population was then 9.9 million
plus 160,000 domestic birds of other species (San
Bernadino County500 flocks, 64 commercial, 394
backyard chicken flocks)
18Other High-Mortality Animal Diseases
NEWCASTLE DISEASE
- January 28, 1972 , the infections progress then
February 1972 and spread continued until the
epidemic area include 6 countries with a total
domestic bird population of 38.4 million
distributed among 16,460 flocks - In 1973, at the cost of US 56 million including
US 28 million in indemnities paid
19Other High-Mortality Animal Diseases
NEWCASTLE DISEASE
- Nearly 113 million doses of vaccine were used,
110 dozen embryos were used per day for diagnosis
and 22,548 visits to individual ranches were made
by veterinary control personnel
20Other High-Mortality Animal Diseases
AFRICAN HORSESICKNESS
- In 1719, the horse population of 70,000 and
killed about 40 of the horse in Cape Colony - By mid-1960, the virus had entered southern Iraq
causing a loss there of about one-half of its
equine population of 200,000 - 3 million and over one-third died before the
spread to Europe
21Other High-Mortality Animal Diseases
AFRICAN HORSESICKNESS
- The consequences in lost food production from
this magnitude of losses of important transport
and draft species could be estimated
22Other High-Mortality Animal Diseases
AFRICAN SWINE FEVER
- Recognized as a disease of domestic swine in
Kenya in 1909
The overall cost to Spain of African swine fever
between 1957 and 1974 was estimated as US 600
million
The U.S DA estimates that were ASF to enter the
US, its costs for initial year in embargoed
exports, swine deaths, and control efforts would
exceed U.S. 1 billion.
Indirect costs of this mammoth epidemic,
estimated much US million, added to the
eventual depopulation efforts costs of another
much US million, produced a calamitous effect
on the community
23Assessing a Dramatic Animal Diseases Costs
24The idea of cost, or decrease in wealth was
associated intimately with death of their
livestock
Lost the animal diseases the key economic
mainstay of its delicate balance for survival
Death or illness of a single work animal may be a
tragedy for a family
25Foot-and-Mouth Disease
- They calculated FMD s most direct annual costs
then still to be - (1) Beef cattle meat losses among 23 million
head690,000 infected cattle w/ average WL of 50
kg for cattle under 1 year of age, 75 kg for
cattle 1-2 years of age, and 100 kg for cattle
over 2 years of age at 52 peso /kgapprox. US
15.37 million
26FMD
- (2) Milk and milk cow losses among 20 million
head, 20 of which (4 million) were in
production, of which 120,000 were infected losing
an average 150L of milk each at 8 peso, plus 4
of infected cows (4800 head) not going back into
production, at 30,000 peso each minus 20,000 peso
beef value (plus the further milk loss from the
latter cows sold as beef)approx. 714,000
27FMD
- (3) cause-specific mortality loss of 0.0012 per
year at 20,000 peso per animal approx. 350,000 - (4) Recovery period losses on pasture of 600 peso
for 1.5 million infected herd approx. 2.6
million, for a total annual FMD loss in this
midcontrol period of over 19 million
28INSIDIOUS MULTICAUSAL DISEASE COMPLEXS
29U.S
U.K
- In Britain, the milk losses per cow with mastitis
was estimated in 1953 at 5-10 with annual toll
taken by this disease complex alone over 25
million.
- In 1980, the annual monetary costs calculated for
proportions of reproductive and fatal neonatal
diseases are - For beef cattle, 965 million
- For dairy cattle, 440 million
- For swine, 293 million
- For sheep, 8.5 million
- For poultry egg production, 132 million
30ZOONOSES
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32Brucellosis
- 75 million of female cattle and buffaloes
affected at any one time by brucellosis, and 1
million of these to abort (loss of 1 million
calves annually to brucellosis) - 500 million of India people75 live in villages,
the contact between these human beings and their
animals is maximum and this population has a
greater exposure to zoonotic infections like
brucellosis than has any other population group
- Between 1942 and 1951 the milk loss from
Brucellosis was almost 1 of population - In 1960, US brucellosis eradication program
related food losses by US 62 million per year
33India
- It has been estimated that of the people in rural
areas, 20 are suffering at any one time from
fevers of various kinds - It may be pointed that brucellosis costs India at
least Rs. 350 million annually in food, animals
and man-days of labor.
34Yellow fever
- In an epidemic in the late 18th century, a viral
infection of jungle monkeys, killed one-seventh
of the human population of Philadelphia, US - In 1978, Africa and South Africa, yellow fever
infected an estimated 8400 persons and caused
1600 deaths
35- In European region between 1972 and 1976, over
100 human rabies deaths per year - Americas, over 300 deaths annually
- In parts of Asia and Africa, between 175,000 and
200,000
- In Egypt 1977, estimated 200,000 human infections
occurred with 598 deaths and about 18,000 known
clinical cases.
36Rabies
- In India, every year over 3 million people to
take the vaccine injections that estimated
account for 4 million labor day lost, which would
amount to at least Rs. 126 million - U.S where such livestock losses to rabies are far
less, only 360 cattle () each year but still
exacts an enormous economic toll from community
in tremendous of man-hours lost from work and
frequently indirect costs.
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38Veterinarians help prevent and alleviate human
health-related social costs and contribute to
mans better health