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. 2011 Oct;17(10):1873-5.
doi: 10.3201/eid1710.101890.

Tembusu virus in ducks, china

Zhenzhen Cao  1 , Cun Zhang, Yuehuan Liu, Yuehuan Liu, Weicheng Ye, Jingwen Han, Guoming Ma, Dongdong Zhang, Feng Xu, Xuhui Gao, Yi Tang, Shaohua Shi, Chunhe Wan, Chen Zhang, Bin He, Mengjie Yang, Xinhao Lu, Yu Huang, Youxiang Diao, Xuejun Ma, Dabing Zhang
Affiliations

Tembusu virus in ducks, china

Zhenzhen Cao et al. Emerg Infect Dis. 2011 Oct.

Abstract

In China in 2010, a disease outbreak in egg-laying ducks was associated with a flavivirus. The virus was isolated and partially sequenced. The isolate exhibited 87%-91% identity with strains of Tembusu virus, a mosquito-borne flavivirus of the Ntaya virus group. These findings demonstrate emergence of Tembusu virus in ducks.

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Figures

Figure 1
Figure 1
Pathologic changes in diseased Pekin ducks. A) Ovary with hyperemia, hemorrhage, and distortion. B) Ovary with hemorrhage (gold arrow), macrophage and lymphocyte infiltration and hyperplasia (green arrow). C) Liver with interstitial inflammation in the portal area (gold arrow). D and E) Ovaries from healthy ducks. F) Liver from healthy duck. A, C) Original magnification ×40; B, C, E, F) scale bars = 90 μm.
Figure 2
Figure 2
Phylogenetic analysis of isolate YY5 (in boldface) from an ill Shaoxing duck in the People’s Republic of China and selected other flaviviruses obtained by using an ≈1-kb nt sequence in the nonstructural 5 genomic region. The tree was constructed by the neighbor-joining method of MEGA (7). Numbers at nodes indicate bootstrap percentages obtained after 1,000 replicates; only bootstrap values >70% are shown. Scale bar indicates genetic distance. The sequences used in the phylogenetic analysis are as follows: AF013374, Gadgets Gully virus (GGYV); AF013385, Kyasanur Forest disease virus (KFDV); M86650, Langat virus (LGTV); Y07863, louping ill virus (LIV); AF013393, Omsk hemorrhagic fever virus (OHFV); L06436, Powassan virus (POWV); AF013398, Royal Farm virus (RFV); U27495, tick-borne encephalitis virus (TBEV); AF013380, Kadam virus (KADV); AF013386, Meaban virus (MEAV); AF013403, Saumarez Reef virus (SREV); AF013410, Tyuleniy virus (TYUV); AF013362, Aroa virus (AROAV); NC_001477, dengue virus 1 (DENV-1); AF013382, Kedougou virus (KEDV); AF013367, Cacipacore virus (CPCV); U15763, Japanese encephalitis virus (JEV); AF013384, Koutango virus (KOUV); AF013360, Alfuy virus (ALFV); AF013389, Murray Valley encephalitis virus (MVEV); AF013416, St. Louis encephalitis virus (SLEV); AF013412, Usutu virus (USUV); M12294, West Nile virus (WNV); D00246, Kunjin virus (KUNV); AF013413, Yaounde virus (YAOV); AF013383, Kokobera virus (KOKV); AF013363, Bagaza virus (BAGV); AF013376, Ilheus virus (ILHV); AF013397, Rocio virus (ROCV); AF013377, Israel turkey meningoencephalomyelitis virus (ITV); AF013392, Ntaya virus (NTAV); AF013408, Tembusu virus strain MM1775 (TMUV-MM1775); AF013409, TMUV strain THCAr (TMUV-THCAr); AB026994, TMUV strain Sitiawan (TMUV-Sitiawan); AF013415, Zika virus (ZIKV); AF013406, Spondweni virus (SPOV); L40951, Banzi virus (BANV); AF013364, Bouboui virus (BOUV); AF013372, Edge Hill virus (EHV); AF013378, Jugra virus (JUGV); AF013400, Saboya virus (SABV); AF013404, Sepik virus (SEPV); AF013411, Uganda S virus (UGSV); EU707555, Wesselsbron virus (WESSV); X03700, yellow fever virus (YFV); AF013373, Entebbe bat virus (ENTV); AF013414, Yokose virus (YOKV); AF013361, Apoi virus (APOIV); AF013370, Cowbone Ridge virus (CRV); AF013379, Jutiapa virus (JUTV); AF013387, Modoc virus (MODV); AF013401, Sal Vieja virus (SVV); AF013402, San Perlita virus (SPV); AF013365, Bukalasa bat virus (BBV); AF013368, Carey Island virus (CIV); AF013371, Dakar bat virus (DBV); AF013388, Montana myotis leukoencephalitis virus (MMLV); AF013394, Phnom Penh bat virus (PPBV); AF013396, Rio Bravo virus (RBV); M91671, cell fusing agent virus (CFAV); NC_003996, Tamana bat virus (TABV); and EU159426, Nounané virus (NOUV). The nucleotide sequence of isolate YY5 used in the phylogenetic analysis has been deposited in GenBank under accession no. HQ641390.
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