Analysis of epidemiology characteristics of norovirus among diarrheal outpatients in 27 provinces in China, 2009-2013 / 中华流行病学杂志
Chinese Journal of Epidemiology
;
(12): 199-204, 2015.
Article
Dans Chinois
| WPRIM
| ID: wpr-240127
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the epidemiology characteristics of norovirus among diarrheal outpatients in China.</p><p><b>METHODS</b>Diarrhea cases were monitored at emergency/outpatient departments at 173 hospitals in 27 provinces of China, with clinical and epidemiological data, and fecal specimens collected and sent to 58 network-laboratories to detect norovirus by RT-PCR method, and to analyze the positive rate of norovirus in various regions, population and time during 2009-2013.</p><p><b>RESULTS</b>11.6% of the 34 031 diarrheal cases under surveillance were found with norovirus. Age group of 6-23 month-old children and that of people over 45 years old were found with the highest positive percentage, 13.7% and 12.4% respectively. Positive percentage of norovirus peaks in autumn and winter in a year; it peaks in mid-temperate zones (10.7%) and warm-temperate zones (11.6%) in winter. It peaks in sub-tropical zones in autumn (14.3%). The most prevalent genogroups detected were norovirus G II, accounting for 89.9% of identified strains.</p><p><b>CONCLUSION</b>Norovirus affects all ages and was most prevalent in children and the elderly among diarrhea outpatients. Norovirus' positive percentage showed strong seasonal pattern, and peaks at different times of a year in different climate zones of China. Since no effective preventive measures existed, further study on norovirus epidemiology and intervention strategies should be conducted in future.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Patients en consultation externe
/
Saisons
/
Virologie
/
Chine
/
Épidémiologie
/
Prévalence
/
Infections à Caliciviridae
/
Norovirus
/
Diarrhée
/
Génotype
Type d'étude:
Étude de prévalence
/
Étude pronostique
/
Étude de dépistage
Limites du sujet:
Adolescent
/
Adulte
/
Adulte très âgé
/
Enfant
/
Enfant d'âge préscolaire
/
Humains
Pays comme sujet:
Asie
langue:
Chinois
Texte intégral:
Chinese Journal of Epidemiology
Année:
2015
Type:
Article
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