Infectious Diseases: Surveillance and Control...Infectious disease is caused by transmission of...
Transcript of Infectious Diseases: Surveillance and Control...Infectious disease is caused by transmission of...
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International Conference on Science and Technology for SustainabInternational Conference on Science and Technology for Sustainability 2007ility 2007International Cooperation for DevelopmentInternational Cooperation for Development
Infectious Diseases: Surveillance and ControlInfectious Diseases: Surveillance and ControlEmerging and ReEmerging and Re--emerging Infectious Diseasesemerging Infectious Diseases
Nobuhiko OKABE, MD, PhDNobuhiko OKABE, MD, PhDInfectious Disease Surveillance Infectious Disease Surveillance CenterCenter
National Institute of Infectious Diseases, JapanNational Institute of Infectious Diseases, Japan
Sept Sept 1515,, 20072007,, TokyoTokyo
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Infectious disease is caused by transmission of microInfectious disease is caused by transmission of micro--organisms. organisms. It is spread widely among human, if nothing taken. It is spread widely among human, if nothing taken.
Prevention of Infectious DiseasesPrevention of Infectious Diseasesnot contact with infected patients (isolation)to clean materials contaminated (disinfection)to keep healthy and clean conditionto give immunity (vaccination), if available
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disinfectiondisinfection
isolationisolation
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Immunization was introduced at 1796.Immunization was introduced at 1796.
Small pox (variolla)
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鍋島邸(佐賀藩)におけるわが国初めての種痘1849
Introduced Immunization first in Japan (Saga Han, Kyushu) at 1849
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Measles in Japan Measles in Japan at 1800`sat 1800`s
Every 20Every 20--40 years, big 40 years, big outbreak of measles outbreak of measles occurred occurred Many people both young Many people both young children and adults were children and adults were suffered by this fatal suffered by this fatal diseasediseaseThe could only prayed The could only prayed not to be suffered by not to be suffered by measlesmeasles
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0
2000
4000
6000
Number of Reported Polio by Year in Japan (1947Number of Reported Polio by Year in Japan (1947--2006)2006)
Urgent introduction of OPV imported from USSR and Canada
Legal use of OPV as a routine immunization with 2 doseswith 2 doses 1964-
1950 1960 1970 1980 1990
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Last case of wildLast case of wild--polio in the Regionpolio in the Region
Americas RegionLuis Fermin TenorioPeru 1991
European RegionMelik MinasTurkey 1998
Polio Eradication
Western Pacific RegionMum Chanty
Cambodia 1997
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A region where no children suffer from……Polio
MeaslesHepatitis B Neonatal
Tetanus
and diphtheria, pertussis & infant tuberculosis
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WHO Regional MeaslesWHO Regional MeaslesElimination TargetsElimination Targets
20002000
20072007
2010201020122012
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June 4, 2003 World Health OrganizationJune 4, 2003 World Health Organization
Microbes are unpredictable!
WHOWHO--facilitated outbreak responses facilitated outbreak responses in the field, 1998in the field, 1998––20032003
World Health OrganizationWorld Health Organization
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Emerging Infectious DiseasesEID are those due to newly identified and
previously unknown infections which cause public health problems either locally or Internationally.
Re-emerging Infectious DiseasesREID are those due to the reappearance and
increase of infections which are known, but had formerly fallen to levels so low that they were no longer considered a public health problem.
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The HIV/AIDS pandemic
A new virus recognized in the early 1980sJuly 2007• 39.5 M HIV infected• 2.9 M deaths in 2006• Drug-Resistance• No vaccine
A new virus recognized in the early 1980sJuly 2007• 39.5 M HIV infected• 2.9 M deaths in 2006• Drug-Resistance• No vaccine
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Index case:from Guandon, China
Hotel M
Canada
USA
Irland
GermanyHanoi
Bangkok
Singapore
SARS in 2003
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2005. Marburg diseaseIn Angola374( death 328: FTR 88%)
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The malaria challengeThe malaria challenge
(R.Carter,1999)
Annu
al de
aths
from
mala
ria (m
illion
s)
0
1.0
2.0
Africa
World
1950 1970 1990 2000
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AntiAnti--malarial drug resistance to malarial drug resistance to treatment worldwide, 2001treatment worldwide, 2001
ChloroquineChloroquine resistanceresistance
S/P resistanceS/P resistance
MultiMulti--drug resistancedrug resistance
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MultidrugMultidrug--resistant TB (MDRresistant TB (MDR--TB), 2001TB), 2001
hyperendemicoutbreaks
Cost of treating multidrug-resistant TB:US$ 250 000 per patient in industrialized countries,US$ 1 000 –$ 10 000 in developing countries
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Dengue/Dengue feverDengue/Dengue feverDengue/Dengue fever
0
200,000
400,000
600,000
800,000
1,000,000
1950s 1960s 1970s 1980s 1990s 2000s*
Average annual number of DF/DHF cases reported to WHO
454 15,547 122,174
295,591
492,820
877,888
* 2000-2003, provisional data
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DF/DHFDF/DHFDF/DHF
1970-19791950-1969
2004 reported
2000>
2005 reported
1980-1999
1999 reported
1996 reported
1998 reported
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Leading causes of mortality, 2001Leading causes of mortality, 2001
48%
18%
19%
10%3% 2%
Infectious InjuriesNon-communicablePerinatal Maternal Nutritional
45%
35%
11%6% 1%2%
Low-income nations(South-East Asia & Africa)
Premature mortality(worldwide, 0–44 years)
Total = 53.9 millionTotal = 53.9 million
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Leading infectious causes of Leading infectious causes of mortality, 2001 estimatesmortality, 2001 estimates3.5
Dea
ths (
mill
ions
)
< 5 years old > 5 years old
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
ARI AIDS Diarrhoea TB Malaria Measles
2.3 2.2
1.5
1.1 0.9
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Why infectious disease, again.Why infectious disease, again.A Changing World !A Changing World !
Collapse of public health Collapse of public health infrastructure infrastructure
Poverty, urbanisation and Poverty, urbanisation and population displacementpopulation displacement
Environmental exploitation Environmental exploitation and degradation and degradation
Complex and natural Complex and natural disastersdisasters
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A Changing World ! A Changing World !
Development of antimicrobial Development of antimicrobial resistanceresistanceAnimal diseases crossing into Animal diseases crossing into human populations human populations Globalisation of travel and trade Globalisation of travel and trade (great benefits but new threats !) (great benefits but new threats !) Inappropriate social, political and Inappropriate social, political and economic responses to economic responses to outbreaksoutbreaks
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Ricketsial infectionsTyphus
Rocky Mountain spotted fever
Virus infectionsArbovirusFiloviruwsSmall pox
Bacterial infectionsPlagueAnthraxTularaemia
Fungal infectionsCoccidioidomycosis
Additoinal Situation on Infectious Diseases: Bioterolism
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Infectious Diseases ControlInfectious Diseases ControlPrevention
Hygiene (personal, public)Immunization
DiagnosisClinical DiagnosisMicrobiological Diagnosis
Treatment
Surveillance
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0
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1 3 5 7 9
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Delayed Response
DAY
CASES Opportunity for control
Late Detection
First Case
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0
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Rapid Response
CASES
Early Detection
Opportunity for Control
DAY
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Backbone of SurveillanceBackbone of SurveillanceTo collect information
To analysis information
To disseminate information - regularly, timely and rapidly
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Infectious diseases do not respect international borders.
Global and regional partnerships and the rapid sharing of data and other information enhance preparedness and evidence-based control strategies.
Strengthening surveillance system and networks is recognized as one of the most important tool to dissolve these issues. It is necessary to improve and to strengthen surveillance with regard to health crises.
It is necessary to keep track of outbreak trends of basic infectious diseases on a daily basis, and to detect any abnormalities as early as possible.
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Furthermore, it is necessary to pass on this information in an appropriate and easy-to-understand manner and to enhance provision of information.
Sometimes crises caused by false rumors and misinformation result in more direct damage.
Fair disclosure of information and easy-to-understand explanations provided to public from a scientific standpoint are increasingly required as measures to manage health crises.
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Response to Outbreak of Infectious Diseases through Information Network
Pr e f . De p . He a l t h
Pu b l i c He a l t h I n s t .
Pu b l i c He a l t h Ct r .
Lo c a l Me d . A s s .
N I I D
Lo c a l Co m m i t t e e
Ce n t r a l Co m m i t t e e
Ja p . Me d . A s s .
Cl i n i c / Ho s p i t a l
Qu a r a n t i n e S t .
W HO, CDC, PHLS , e t c
Co m m u n i t y
F i e l d E p i d e m i o l o g i s t
MHW
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Global health protection Global health protection --the challengesthe challenges
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Let`sLet`s strugglestruggle againstagainst infectiousinfectious diseasesdiseaseswithwith ScienceScience, , TechnologyTechnology and and International Cooperation.International Cooperation.
Thank you !Thank you !ArigatouArigatou gozaigozai mashitamashita
ありがとうございましたありがとうございました
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Leading Causes of Death in JapanLeading Causes of Death in Japan
19501.TB2.Brain vascular disease3.Pneumonia4.Gastro-enteritis5. Malignant diseases
20011. Malignant diseases2. Brain vascular disease3. Cardiovascular diseases4. Pneumonia5. Accident
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Sakai Sakai outbreak outbreak July,1996 July,1996
The The Education Education Minister Minister visited sick visited sick childrenchildren
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Nipah virus infection
1999 Malaysia
Human encephalitis↑
Pig pneumonia, encephalitis↑
Fruit Bat no illness
2005 Bangladesh2007 India
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Treatment of Poliomyelitis: 1940’s USA
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TB trends in Eastern Europe and Africa
1980 1985 1990 1995 20000
50
100
150
200
250 (cases per 100 000)Africa
Eastern Europe
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Spread of wild polio virus 2004Spread of wild polio virus 2004--20052005
In HQ as of 4 May 2005Case or outbreak following importation
Endemic countries
Wild virus type 1Wild virus type 3
Re-established transmission countries
16 polio-free countries had importations from Nigeria.Polio was 're-established' in 5 of these polio-free countries.