Epidemiological characteristics of Japanese encephalitis in Guizhou Province, China, 1971-2009 / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 297-304, 2012.
Article
in English
| WPRIM
| ID: wpr-235555
ABSTRACT
<p><b>OBJECTIVE</b>The aim of the study was to establish the contemporary epidemiological characteristics of Japanese encephalitis (JE) in Guizhou Province.</p><p><b>METHODS</b>A retrospective study of National Notifiable Disease Reporting System (NNDRS) data from 1971 through 2009, was conducted to ascertain the geographical, seasonal, and age distributions of JE incidence in Guizhou Province, China.</p><p><b>RESULTS</b>A total of 68 425 JE cases were reported in Guizhou from 1971-2009. The JE cases occurred sporadically in all 9 prefectures of Guizhou, mostly among residents of rural areas. Seasonal distribution of JE remained consistent over the period from 1971-2009 with the main transmission season starting from June to September and peaking in August. JE occurred mainly in children under the age of 15 years with peak incidence in the 0-6-year age group. Pearson's correlation analysis showed that JE vaccine distribution had a negative correlation with JE incidence rates during 1971-2009 (coefficient of correlation=-0.475, P<0.01).</p><p><b>CONCLUSION</b>Over the period of 1971-2009, the JE incidence rate had declined dramatically in terms of geographical and age distributions due to JE vaccination to children at risk.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Seasons
/
Time Factors
/
Viral Vaccines
/
China
/
Epidemiology
/
Incidence
/
Mortality
/
Age Distribution
/
Encephalitis, Japanese
/
Allergy and Immunology
Type of study:
Incidence study
/
Observational study
/
Prognostic study
Limits:
Adolescent
/
Child
/
Child, preschool
/
Humans
/
Infant
/
Infant, Newborn
Country/Region as subject:
Asia
Language:
English
Journal:
Biomedical and Environmental Sciences
Year:
2012
Type:
Article
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