WHAT IS EPIDEMIOLOGY ?

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• ?????????
• ????? ???? ???????
• ??????????????????????????
• ???????????? ?????????????

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?????????????
?????????????(study)??????????????????
??????? (occurence) ?????????
(distribution) ????????????????????????? (risk
factors) ?????????????????????????????? ????????
??????????????????? (preventioncontrol)
???? ????? ???????
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??????

• ?????????????????????????????????
• ???????? ????????????????
• ??????????????????????????????????????????????

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Epidemiologic Triangle
Agent ?????????? ???? ???????? ..
Host ??
Environment ???????????
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???????????????????????????????? Host - Agent -
Environment
Host ?????? - ????????? ?????? -
????????? ??????? ????? ???? ??? ?????????
????????????????? -
?????????????? - ????????????? -
??????????? ????????? ??????????????
?????????? Personal Hygine ?????
??????????????

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Agent ?????????????
?????? - ??????????????????? , ???? , ????????
?????? - ?????????????????? -
?????????? - ?????????????????
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Environment ???????????
- ????????? - ??????? ????? ??????? ????? -
????????????????
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???????????????
1. ??????????????? (Person) ???? ???
????????? ????? ???????????????????????
??????????? ????????
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2. ????????????????? (Place)
????????????? ???????????? - ????
????????????????????? ??????????????????????????
???????????????
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3.?????????????? (Time)
????????????????? ????????????????
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??????????????????

• ?????????????????????????
• ????????? SRRT
• ??????????????????????
• ?????????????????????
• ???????
• ????????? Newspaper, TV, Internet

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• ?????? ????????????????
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Surveillance General principles
???????????????? ?????????????
Reporting Feedback
?????????????
?????????
????????
action
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?????????????

• ??????????? ??????????????????????????????????????
  ?????????? ????????? ??? ????????

???????????????
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???????????????????????

• ????????
• ??? Median ???????????? ? ???????????????? 5
  ??????????

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??????????????? 5 ?? ????????
????? ????????????????????????????????????????
????????????????
2550 2549 2548 2547 2546
?????? 10933 12202 10941 12306 12993
?????????? 10430 9610 11221 13823 11946
?????? 10540 11691 10002 13538 12270
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Surveillance
Information for action
???????
???????
??????????????????
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??????????????????????????????????????????????????

Emerging / Re-emerging diseases
1997 A 3-year old boy, case of Avian Flu (H5N1)
in Hong Kong alerted the public health people
around the world to start a full scale
investigation.
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??????????

• Endemic ?????????????????????????????
• Epidemic Outbreak
• Outbreak -gt ????????, ???????
• Epidemic -gt ???????????
• Cluster ???????????????????????????????????,
  ????, ???????
• Pandemic ??????????????????????????????????,
  ??????????????????

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????????????????
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?????????????????????
????????????????????????????????????
????? / ?????????????? ?????????????? ????????????
???? (Mode transmission) ????????????????????????
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????????????

• ?????????????????????????????????
• ????????? (??????????) ?????? ??????????
  ????????????? logistics ???????????
  ??????????????? ???
• ?????????? (????????) ?????? ????? ????????????
  ???????????? ????????????????? ???
• ????? ???????????? ??????????????????
• ????????????????????????????? ???? ????????????
  ?????????????????????????????? ??????????????????
  
• ???????????????????????

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