Dengue Issues and Challenges India

7/23/2019 Dengue Issues and Challenges India

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Dengue11

Aedes aegyptiDengue viruses are mainly transmitted bythe bite of infectedAedesaegyptimosquitoes; an invasive, domesticspecies with tropical and subtropical

worldwide distribution that originated in

Barrera R, Amador , D!a" A. $mith, u%o"ord'n #(, Rosar-nusual productivity of Aedesseptic tans and its implicatiodengue control. edical and /

0ntomology **12*&23.http144www5.interscience.wilen4fullte6t47738+757749D:$AR
http://www3.interscience.wiley.com/cgi-bin/fulltext/119401311/PDFSTARThttp://www3.interscience.wiley.com/cgi-bin/fulltext/119401311/PDFSTARThttp://www3.interscience.wiley.com/cgi-bin/fulltext/119401311/PDFSTARThttp://www3.interscience.wiley.com/cgi-bin/fulltext/119401311/PDFSTART


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adhya 9radesh ribal situatResults:

5?@ werefound to be positive for dengue. henR&9R and sequencing conrmedthe aetiology as dengue virus type *.0ighteen per cent of patients neededhospitali"ation and ve deaths were

attributed to dengue. he virus wasalso detected fromAedesaegyptimosquito, which wasincriminated as a vector. 9hylogeneticanalysis revealed that the denguevirus * detected belonged to

cosmopolitan genotype of the virus.

Interpretation & c

Dengue virus serotydetected as the aetagent in the outbreavillages of andla dadhya 9radesh. oman&made environmfavouring mosquitog

conditions and seedcould be the probabthis outbrea. -rgenneeded to control thto tribal population,already overburdenvector borne diseas


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Rural areas of Canyaumari districtadu

Results1

=*+?@

were found positive for dengue virusspecic Fg antibodies. Dengue virusserotype&5 was detected from aplasma sample by o6o&F:A test usingvirus specic monoclonal antibodies.0ntomological survey revealed theabundance of Aedes albopictus

=$use@ mosquitoes in the study area.


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Iorld ap


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osquito ontrolidentifying the most productive mosquito breed

7& he government has vacated houses in large numbers in annew maret.

hey are now the


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ontK

Fn ambodia, the Iorld Lealth


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OW DO G


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he o""ies

5,>++mosquitospecies

ule6 Anopheles A

Iest ile/irus

alaria)ellow :eve

Denguehiungun

a


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Nuestion

Ihat does OaedesP meanQ

O-npleasantP =ree@ by eigen in 77


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(ife ycle

All in all, it tadays.

wo phases1 teaquatic

0ggs are resisenvironmenta

0ggs larva =

presence of w (arva pupa

9upayoungwater@

Ohe osquito (ife&cycle,P enters for Disease ontrol and 9rev


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:eeding

osquitoes sense thepresence of1 enetics M >?

hemicals =respiratory, sin@ arbon dio6ide =activity, using

candle@

(actic acid =e6ercise, after eatingsalty foods, high&potassium@

$teroids

-ric acid

holesterol

9regnancy Body tempera

Dar&colored clothings, gar

ovement :loral4fruity fr

oisture


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(ets understand the Cill%abitat

Aedes aegypti is e6tremely common in areas lacing piped wasystems, and depend greatly on water storage containers to laeggs.

ale and female adults feed on nectar of plants; however, femmosquitoes need blood in order to produce eggs, and are activdaytime.

0ggs have the ability to survive drying for long periods of timeeggs to be easily spread to new locations. Articial or natural water containers =water storage containers

pots, discarded tires, plates under potted plants, cemetery vapots, bucets, tin cans, clogged rain gutters, ornamental fountdrums, water bowls for pets, birdbaths, etc.@ that are within orplaces where humans live are ideally larval habitats for this m

his species has also been found in underground collec


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Biting Behavior

7. Aedes aegypti bites primarily during the da*. his species is most active for appro6imatetwo hours after sunrise and several hours

before sunset, but it can bite at nighin 'ell lit areas*

5. his mosquito can bite people without beingnoticed because it approaches from behindbites on the anles and elbows.

8. Aedes aegypti prefers biting people but it a

bites dogs and other domestic animals, mos


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Nuestion

7+47*4*+7+

Ihy do female mosquitoes needbloodQ

:or egg development. he amino acidisoleucine is important.


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Breeding

osquitoes will practically breed anywhwhere there is a collection of water that s

longer than ve to seven days. $ome p

lighted areas and some shady areas. $prefer fresh water and some stagnant w


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+onds,treams

,'amps

Roc( holes

-itches ree h

ommon naturalbreeding grounds


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omparison

edes aegypti edes albopictus

OFnvasion biology of Aedes albopictus,P -niversity of :lorida.
http://fmel.ifas.ufl.edu/research/exotic.shtmlhttp://fmel.ifas.ufl.edu/research/exotic.shtml


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Aedes aegypti

0gyptian tiger mosquito


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Dengue and the Aedes albopictus mo

Aedes albopictusTalso called theAsian tiger mosquito&& is a mosquitothat can transmit the viruses thatcause dengue fever.

he female mosquito lays eggs inwater holding containers around orfurther away from homes, treeholes

and bamboo internodes. Ft bitespeople, pets and wild animals.

his species can survive year roundin tropical and subtropical climates.

edical importance albopictus is most wfor transmitting denchiungunya virusesalso been found infenature with the follo

viruses Iest ile, 0astern eq

encephalitis, #apanesencephalitis. Ft can adog heartworm para


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Dengue and the Aedes aegypti mo

he Aedes aegypti mosquitocan transmit the viruses thatcause dengue fever. hefemale mosquito lays eggs incontainers with water andplants near the home. Ft bites

people and animals. hisspecies can survive yearround in tropical andsubtropical climates.

edical importancefrequently found inand subtropical areworld, Aedes aegyphistorically is consibe a primary vecto

diseases such as thfever) chi(ungunyello' fever*


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Nuestion

Fn Fndia, which of the two is thepredominant mosquito speciesQ

Aedes aegypti


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he Dengue /irus

Dengue 7 /irus and Dengue Lemorrhagic :ever, :rench 9olyneLubert and Lalstead, 0merging Fnfectious Diseases, August *+

Flavivirus =)ellow virus@


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Listorical

Dengue virusesoriginally came frommoneys.

Ft Jumped to humans

7++ to ++ years ago. Ft was a minor disease

until Iorld Iar *


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Nuestion

Ihy has dengue became asignicant health problem after Iorld

Iar *Q

Due to increased travel and activetransport industry


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he :our ypes

Oolecular 0volutionary 9athogenesis of Dengue /irus Fnfection,P

Dengue virus and its serotisolated in 73>2 at /elloreAll the Fndian D/&7 isolateAmerican African =AA:@ g

he Fndian D/&7 isolates ainto four lineages, Fndia F, Africa lineage.


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Dengue $pread

9ossible factors Fnadequate housing and

public health systems=water, sewage, wastemanagement@

9oor vector control limate change

Fncreased internationaltravel


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Iarning $igns of DL:

Refuse Suids or vomiting. $leepy or restless child.

astrointestinal bleeding

Abdominal pain

$in mottling, cold sweatysin, cold hands and feet

o urine for the past 2hours.

ritical 9eriod1 Ris for DL: is high 7&* days after fever sub

=ottled s(in

bdominal pain

de

8

Dengue Lemorrhagic :ev


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Dengue Lemorrhagic :ev=DL:@

?

Ris of dying from DL: withadequate treatment is V 7?

auses of death $hoc due to de

$evere hemorrha

0ncephalitis

(iver failure

DonWt get bitten

Advice to former dengue


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i R ll


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osquito Repellents

D00 Apply insect repellent

D00 =*+&5+?@

Ff repellent is aerosol,open air

Ff child, donWt apply tohands

Apply on clothing.

osquito net if room isnon&air&conditioned or

screened

atural eed frequen

application

itronella, lemeucalyptus, ca

peppermint o ultiple repel

to be more eHdue to mosqudiHerences.

9 t B di


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9revent Breeding

over watercontainers, wells, and

water tans tightly

(etWs Act to 9revent Dengue, Long Cong Lousing Authority

7 Ceep drains free fromblocage*hange the water invases and for aquaticplants at least once a

wee and leave nowater in the saucers

underneath the plants

5ovedisp

water

Dispose of unwantedcontainers where water

may collect such aslunch bo6es and soft

drin cans into coveredbins

> Repair uneven surfacesof the ground toprevent water from

collecting

2hewate

trcondra

rem

9 t Bit
http://www.housingauthority.gov.hk/hdw/en/aboutus/events/community/denguefever08/index.htmlhttp://www.housingauthority.gov.hk/hdw/en/aboutus/events/community/denguefever08/index.html


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9revent Bites

Iear light&colouredand long&sleeved

clothing and pants7Apply mosquito

repellents containingD00 to e6posed parts

of the body

*

-se mosquiscreens wheis not air&co

5

Avoid visitingscrubby areas8

Fnstall sc

windows anplace mos

4electric mo4anti&mosq

near the

>


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t f Di t l d 9


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enters for Disease ontrol and 9rev

http144www.cdc.gov4Dengue4


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his Iee in /irology


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his Iee in /irology

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Dengue Issues and Challenges India