Format

Send to

Choose Destination
Emerg Infect Dis. 2012 Nov;18(11):1817-24. doi: 10.3201/eid1811.111761.

Litchi-associated acute encephalitis in children, Northern Vietnam, 2004-2009.

Author information

1
Unité d’Epidémiologie des Maladies Emergentes, Bâtiment Laveran 3ème étage, Institut Pasteur, Paris, France.

Abstract

Since the end of the 1990s, unexplained outbreaks of acute encephalitis in children coinciding with litchi harvesting (May-July) have been documented in the Bac Giang Province in northern Vietnam. A retrospective ecologic analysis of data for 2004-2009 involving environmental, agronomic, and climatic factors was conducted to investigate the suspected association between the outbreaks and litchi harvesting. The clinical, biological, and immunologic characteristics of the patients suggested a viral etiology. The ecologic study revealed an independent association between litchi plantation surface proportion and acute encephalitis incidence: Incidence rate ratios were 1.52 (95% CI 0.90-2.57), 2.94 (95% CI 1.88-4.60), and 2.76 (95% CI 1.76-4.32) for second, third, and fourth quartiles, respectively, compared with the lowest quartile. This ecologic study confirmed the suspected association between incidence of acute encephalitis and litchi plantations and should be followed by other studies to identify the causative agent for this syndrome.

PMID:
23092599
PMCID:
PMC3559149
DOI:
10.3201/eid1811.111761
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for CDC-NCEZID Icon for PubMed Central
Loading ...
Support Center