Transcript Introduction to elements of Public Health

Introduction to elements of
Public Health
First meeting on the topic: 9th
June 2007
Public Health
• Public health is the science of protecting and improving
the health of the communities through education,
promotion of healthy lifestyles and research for diseases
and injury prevention. Thus the focus is on entire
populations rather than on individuals.
• Poor public health takes economic tolls in various ways:
prevention better than cure
Public Health
• Achievements of modern public health – improved quality
of life.
– Attributed to vaccination programs, control of infectious
diseases, better safety policies, improved family planning,
fluoridation of drinking water and programs to decrease heart
diseases and stroke.
• Vast discrepancy between Developing and Developed
countries – poverty being the main factor. Now the focus in
developed countries is shifting towards chronic diseases such
as cancer, AIDS, diabetes and heart diseases but infectious
diseases continue to haunt developing countries.
• India has focused mainly on curative care and immunizations
while public health services has been neglected
Public Health in Independent
India
• Many problems reported in Monica Das Gupta’s paper.
• In Independent India the capacity to prevent outbreaks
has reduced.
– the focus was more developing heavy industry rather
than health and education.
• Public health is the responsibility of the state in India, but
is not adequately funded
• Public health regulations are in place but often
neglected.
Yet Future Trends are
Encouraging
• Financing is available through large programs – Rural health
mission, National sanitation mission and employment
guaranteed scheme.
• Institutions are being built at local and national level.
Panchayati Raj Act emphasizes on building local government
and delegates health activities to them.
• A new thrust to build an institution like the US Center of
disease control (adapted in China and EU). It recognizes that
public health systems have to be coordinated and supported
by a federal authority.
• India has an exceptional capacity to deliver services (ex:
Elections, Censuses)
Burden of disease in India
Burden of disease in India
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Measuring the Impact of disease
- DALYS – disability adjusted life years
- Impact of diseases in India
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How to proceed further (as a group)
- Disease specific, group specific, work specific
- Anoop to lead subsequent discussion on infant diseases and intervention
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Education as means of help in public health
- suggested by Manas, eg. Indradhanush magazine
Burden of disease in India by DALYS
• Non-communicable diseases:
– Cardiovascular diseases (31%)
– Mental illnesses (26%)
– Cancer (10%)
• Communicable diseases:
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Acute respiratory infections (ARI, e.g. pneumonia) (18%)
Perinatal illnesses (around childbirth) (17%)
Diarrhoea (16%)
Tuberculosis (6%)
HIV (4%)
Malaria (3%)
Post-meeting notes
• Need for affordable technological
advances
• Key point is to speed up diagnosis and
subsequent treatment
• List of useful sites posted on webpage
Neonatal mortality reduction
Neonatal mortality reduction
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Status of infant and perinatal issues in
rural India
Different kinds of traditional beliefs
Efforts led by Abhay Bang, Gadchiroli
dist :
- Village health workers educating the households
about safe procedures
- Issues regarding traditional practices
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Role of father in neonatal care, etc.
Other issues discussed
• Helping make the perinatal period safer
using simple household tools/remedies
– Eg: Anoop’s demo of preparing disinfectant
bleach using lime juice and baking soda
• Monitor maternal and baby health
regularly
– Simple tool: possible design of paper tapes
for measuring size of mother’s abdomen to
estimate weight of baby.
Malnutrition in India
Malnutrition in India
- statistics
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Malnutrition consists of both protein-energy malnutrition (underweight
etc.) and micronutrient deficiencies.
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Cause of half of all child deaths, and more than half of deaths due to
major diseases (malaria, diarrhea, pneumonia, measles) in India.
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Prevalence of underweight children is highest in the world, double
of sub-Saharan Africa.
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More than a third of undernourished kids of the world live in India.
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More prevalent in rural areas, among girls, backward classes and
poorer income groups.
India’s solution - ICDS (Integrated
Child Development Services)
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World's largest early child development program
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Uses a multi-sectoral approach of provising healthcare as well as preschool education to children and mothers.
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Supplementary feeding, immunization, health checkups, health and nutrition
education to adult women, micronutrient supplements, pre-school
education, growth monitoring.
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Anganwadi centers led by anganwadi workers in every administrative block
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By 2004 6lakhs AWC workers covered 33M children and 6M women
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Very prevalent (covers 90% of administrative blocks in the country) but
effectiveness is under debate.
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We studied various success stories of anganwadi centers and measures on
how they can be improved.
Malaria
Malaria Cycle
Parasite in RBCs
Distribution of Malaria
Sachs & Malaney, Nature 2002
Malaria in India
Dr VP Sharma: http://www.pitt.edu/~super1/lecture/lec17341/001.htm
Interventions
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Preventing mosquito breeding
Indoor spraying of insecticide
Insecticide-treated bednets
Larva-eating fish
No vaccine available
Water Supply, Sanitation, and
Public Health in Mumbai
Source: Field Survey on water supply, sanitation and associated health impacts in
urban poor communities- a case from Mumbai City, India.
S. Kumar Karan & H. Harada, Water Science & Technology, 2002
Mumbai: Background
• Largest metropolitan area in
India, 5th largest in the world
• Population: ~20 million
• About half of the population
lives in slums- “urban poor”
Water Supply and Sanitation
• Govt. provides 3 billion liters/day
• Only 65% of the requirement is met
• Urban Poor
– Get 1/3rd the supply compared to the rest (45 liters per capita per
day)
– US- ~260 liters/c.d. household consumption
• 90% of city and 40-50% of suburbs have sewerage
systems
– But most urban poor do not have access to it
– Less than 1/3rd the requirement for public toilets is met
– 90% waste water (2.2 billion l/d) is collected
• 0.1 billion is treated
• 1 billion to oceans
• Rest in creeks/waterways
Impact on Health
• 35-45% families in slums, >50% among pavement dwellers have at
least one person ill
• Water-related diseases (diarrhea, malaria, typhoid, etc.) account for
26-32% of all diseases
• Children share 2/3rd of all disease burden
(Short duration)
(Chronic)
Incidence of Water Borne
Diseases
Conclusions
• Higher incidence of water and sanitation related disease
in slum and pavement dweller areas
• Environmental problems include location near polluted
sites, lack of sanitation, poor personal hygiene, poverty,
lack of environmental education
• Pavement dwellers suffer the most
• Problem lies in huge slum population, ~ 10 million
• Provide safe and adequate water and sanitation facilities
Technological ways to make water cleaner
- to prevent water-borne diseases
Background
• Statistics, WHO : ~1b people do not have easy
access to clean water.
• Before the goal of providing clean drinking water to
everyone materializes
local or household treatment of water may protect
people from disease.
Common methods of water
purification
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Disinfection using chlorine
Boiling
Flocculation (e.g. alum)
Filtration
Solar/UV treatment.
Group discussed about
• Techniques of different methods.
• Socio-economic obstacles on their implementation
– Cost and availability
– Ignorance and lack of belief in the benefits of water
treatment
– More important concerns than purity of drinking water