A decade of Japanese encephalitis surveillance in Sarawak, Malaysia: 1997-2006.
Japanese encephalitis virus (JEV) is an important encephalitis virus in Asia, but there are few data on Malaysia. A hospital-based surveillance system for Japanese encephalitis (JE) has been in operation in Sarawak, Malaysia, for the last 10 years. JEV is endemic in Sarawak, with cases occurring throughout the year and a seasonal peak in the last quarter (one-way anova, P < 0.0001). Ninety-two per cent of 133 cases were children aged 12 years or younger; the introduction of JE vaccination in July 2001 reduced the number of JE cases (84 in the four seasons prior to vs. 49 in the six seasons after, McNemar's test, P = 0.0001). After implementation of the programme, the mean age of infected children increased from 6.3 to 8.0 years (Student's t-test, P = 0.0037), suggesting the need for a catch-up programme.
Wong
See C
SC
Sibu Hospital, Sibu, Sarawak, Malaysia.
Ooi
Mong H
MH
Abdullah
Abdul R
AR
Wong
See Y
SY
Krishnan
Shekhar
S
Tio
Phaik H
PH
Pek
Peng C
PC
Lai
Boon F
BF
Mohan
Anand
A
Muhi
Jamail
J
Kiyu
Andrew
A
Arif
Mohamad T
MT
Cardosa
Mary J
MJ
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004664:Encephalitis Virus, Japanese / Q000276:immunology*; D004672:Encephalitis, Japanese / Q000453:epidemiology* / Q000517:prevention & control / Q000821:virology; D019353:Endemic Diseases; D006801:Humans; D017589:Immunization Programs; D015994:Incidence; D007223:Infant; D022321:Japanese Encephalitis Vaccines / Q000008:administration & dosage; D008296:Malaysia / Q000453:epidemiology; D011159:Population Surveillance / Q000379:methods*; D012621:Seasons; D014611:Vaccination
D022321:Japanese Encephalitis Vaccines