dengue project presentation_nirasha

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STUDY OF MODELING DENGUE RISK BASED ONSOCIO ECONOMIC/ SOCIO CULTURAL AND

ENVIRONMENTAL FACTORS IN KELANIYA AREA:AN APPROACH TO GIS APPLICATION

Environmental Project ² ENCM 32085University of Kelaniya.

N.P. WanniarachchiEM/2005/051



Dengue fever is a disease caused byarbovirus that is transmitted by Aedesmosquitoes, particularly Aedes aegypti and A.albopictus .

T his case study attempts to predict denguerisks based on Socio-economic/Socio-culturaland environmental factors.

Possible temporal & spatial relationship in adengue epidemic area.

Introduction



F actors were studied by interviewingselected fifty patients out of 120 patientsrecorded in Kelaniya MOH area during Januaryto December in 2008.

Methodology

G ampaha district Kelaniya MOH including sixPHI divisions were studied as dengue epidemicarea.

- Hunupitiya, Kelaniya, Kiribathgoda,Dalugama, Peliyagoda, and Wedamulla



Each patient was interviewed at their

residence through a structured questionnairecomposed of 60 variables (primary data).

Since variables are high, all variables were

sorted up to 16 categories(secondary data).

Primary and Secondary data



A G eographic Information System ( G IS) & G PSdata use to create a spatial Dengue T hreat Map(DT M).

Arc G IS 9.0 software package is use to G IS.

All selected location of each dengue patientswere obtained by G eographical PositioningSystem ( G PS).

G armin G PS use to collect G PS data.

Dengue treat map overlaid with vegetationcover of area.



Positively affectedfactors

Negatively affectedfactors

Limited use of mosquitoprotection practices

Water storagecontainers

Demographic factors Vegetation coverPoor management ofwaste disposal

F amily status

Climatic factors Awareness of dengue

Surroundings (BuiltEnvironment)

Sex differences

Human dwelling

Results & Analysis



% of people vs gender

0

10

2030

40

50

60

% of male % of Female

Gender

% of peopl

% of people vs status

0%

10%

20%30%

40%

50%

60%

Good Poor Nil

Status

% of peopl

% of houses vs status

0%

10%

20%

30%

40%

50%

60%70%

Protected Unprotected

Status

% of hous

% of gardens vs status

0%

10%

20%

30%

40%

50%

60%

70%

80%

Presence of vegetation cover Absence of vegetation cover

Status

% of garde

% of people vs method

0

5

10

15

20

25

30

35

40

Screens and closed windows Mosquito protection coils Mosquito protection nets

Method

% people

Indoor and Outdoor mosquito breeding palce

0

10

20

30

40

50

60

70

80

% Indoor mosquito breeding places % Outdoor mosquito breeding places

Breeding place

% moquito breeding places



Dengue Risk Map with the point case location ofdengue incidents

Discussion & Conclusion



Overlaid map of D T M with vegetation cover



T he mitigation of dengue is implementedmainly using environmental management.

Proper solid waste disposal Elimination of stagnant water in domesticenvironment.

T he awareness of patients was taken as anegative factor & it is highlighted thecarelessness of patients for the infection.



Participated field visit ² all six PHI divisions

Literature collection.

Participated discussion sessions with othermembers conducted in every F riday inZoology Lab 2.

G ive my cooperation to the preparation ofreport.

My Contribution



THANK YOU

dengue project presentation_nirasha

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