This ppt is all about Japanese encephalitis a mosquito bitten disease cause, effects, precautions, affected areas, immunization. EXPLORE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1. Welcome
JAPANESE ENCEPHALITIS
By: Gayatri and Aabhika
CLASS:IX ‘A’

2. ABOUT THE ORGANISM
JAPANESE ENCEPHALITIS
 Genus Flavivirus
 Name derived from
the Latin flavus meaning “yellow”
 Single stranded, enveloped RNA
virus
 Morphology not well defined

3. Structure Of The Virus

4. History
 The first case recorded in 1871 in JAPAN.
 There was a large outbreak , involving >6000
cases.
 Subsequent outbreak- 1927,1934,1935.
 In KOREAN PENINSULA – first case recorded
in 1933.
 On CHINESE MAINLAND first in – 1940.
 In PHILIPPINES, first case in early 1950s.

5.  JE reached PAKISTAN. – 1983.
 In RUSSIA, first reported – 1986-1990.

6. Transmission Of JE virus
 Transmitted by rice field breeding
mosquitoes, mainly Culex tritaeniorhychus
 mosquitoes infected by feeding on
infected pigs and wild birds (amplifying
hosts)
 Human as dead end hosts
 No person-person or animal-person
transmission

8. Distribution of Japanese encephalitis in Asia

9. CULEX TRITAENIORHYCHUS

10. Economic Impact
 Porcine (pig)
High mortality in piglets
 Equine (horse)
Up to 5% mortality rate
 Humans
Cost for immunization
and medical treatment
Vector control measures

11. PATIENTS OF JE

12. 12
Treatment
 No effective specific treatment available
 Supportive treatment only

13. Symptoms of JE infection
 Most cases asymptomatic
 Incubation 4 to 14 days.
 Mild -fever with headache
 Severe infection
 quick onset
 headache & high fever
 neck stiffness,
 stupor, disorientation,
 coma, tremors,
 occasional convulsions (especially in infants) and
spastic (but rarely flaccid) paralysis.

14. 14
Prevention
 Personal protective
measures and mosquito
elimination are the most
important
 travelers going to
endemic areas may
consider vaccination

15. 15
Prevention of Mosquito Bites
•Avoid going to rural area during dusk and dawn
when the mosquitoes are most active
•Wear light-colored, long-sleeved clothing and
trousers
•Apply DEET-containing mosquito-repellents
over exposed parts of the body and clothes
every 4 to 6 hours
•For DEET products used by children, its
concentration should be less than 10%

16. 16
Prevention of Mosquito Bites
• Place of accommodation should
have air-conditioners or mosquito
nets; or
• hang mosquito screens around your
bed, use insecticides or coil incenses
to repel mosquitoes
•Install mosquito nets to doors and
windows so that mosquitoes can’t get
in

17. 17
 Put all used cans and bottles
into covered dustbins
 Change water for plants at least
once a week, leaving no water in
the saucers underneath flower
pots
Prevent mosquito breeding

18. 18
 Keep all drains free from
blockage
 Cover tightly all water
containers, wells and water
storage tanks
 Top up all defective ground
surfacers to prevent the
accumulation of stagnant
water
Prevent mosquito breeding

19. 19
JE Vaccination
 Recommended for use in
endemic areas
 Everyone should take the vaccine
of JE.

20. 20
See Doctor Immediately
•Having been bitten by a mosquito
and displaying symptoms of JE
afterwards
•Falling ill, especially having a fever
within one month after you have
returned from abroad
•Tell your doctor where you have
been

21. Thanks
for
watching