This ppt is about vector borne diseases

1. DR.S.M.JOSHI
MEDICAL OFFICER &
FACULTY MEMBER H.F.W.T.C.THANE

2.  Chikungunya name derived from Swahili word “that
 which bends up. in reference to the stooped posture
 developed as a result of Arthralgia(severe joint pains)
 Clinical Features:-
Fever Rash
Headache Arthralgia
Nausea Hemorrhagic manifestation-bleeding gums,
Vomiting Epistaxis, heametemesis,
myalgia Blood in stool-maleana

3.  Period of illness:-illness is often acute and lasts for 3-
5days.may be up to 10days or more. Recovery is usually
prolonged and marked by weakness and pain in joints.
 Incubation period:-2-12days commonly 3-5 days.
 Age group:-the disease affects all age groups.
 Morbidity:-30-70%of population in affected
field/area.
 Mortality:-Negligible.
 Virus responsible:- belongs to family togaviradae
 Genus:- Alpha virus
 Subgroup:-semilliki forest Venezuelan(SFV)equine
encephalitis.

4.  -;Epidemiology:-
 Basically recognized as URBAN disease .
 Clinically very similar to dengue.misdignosis is not
unusual.
 Virus was first isolated in febrile human in Tanzania in
1953.
 In India outbreak reported in 1963in kolkatta,east costal
area i.e.chhenai,pondichery,vellore,vishakhapattanam in
1964.
 In Maharashtra sporadic cases reported in the year 1973,
 and year 1983, year 2000
 The virus is maintained in nature in man-mosquito-man
cycle.
 Vector-aedes aegypti mosquito through transovarian
transmission.

5.  -:DIAGNOSIS:-;-
 Isolation of Virus
 Demonstrating of four fold or greater rise in antibody
titre.
 ELISA testing foe IgM antibody.
 Diagnosis by RT-PCR Test
 The antibody titre will be positive after 5th day of
illness only.
 PREVENTION and TREATMENT and CONTROL:_-
 No Vaccine available for prevention for CHK.
 Control is possible by avoidance of mosquito bites
reduction in density of vector.
 Treatment is mainly symptomatic by anti
inflammatory drugs. Steroids are not to be used.

6.  Case Definition of CHK fever
 Suspect case:- acute onset, high fever,7days duration,
severe headache, myalgia, severe arthralgia,with or
without rash
 Probable Case:-suspect case of CHK,high vector
dencity,presence of confirm case in the area .
 Confirmed Case:-
 Isolation of virus in early phase.
 Serological test for IgM antibody after 5th day of illness.
 Demonstration of 4 fold or greater rise in IgG
antibodies in paired sera.

7. Thank You
 Very Much
 For Listening