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Volume 18, Number 3—March 2012


Serologic Evidence of Nipah Virus Infection in Bats, Vietnam

Futoshi HasebeComments to Author , Nguyen Thi Thu Thuy, Shingo Inoue, Fuxun Yu, Yoshihiro Kaku, Shumpei Watanabe, Hiroomi Akashi, Dang Tuan Dat, Le Thi Quynh Mai, and Kouichi Morita
Author affiliations: Nagasaki University, Nagasaki, Japan (F. Hasebe, S. Inoue, F. Yu, K. Morita); National Institute of Hygiene and Epidemiology, Hanoi, Vietnam (N.T.T. Thuy, L.T.Q. Mai); National Institute of Infectious Diseases, Tokyo, Japan (Y. Kaku); University of Tokyo, Tokyo (S. Watanabe, H. Akashi); Tay Nguyen Institute of Hygiene and Epidemiology, Dak Lak, Vietnam (D.T. Dat)

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Results of serologic tests for Nipah virus on bats captured in Vietnam, 2007–2008*

Bat species No. samples No. (%) ELISA+ No. WB+/no. ELISA+ No. micro-NT+/no. ELISA+†
Cynopterus sphinx 109 3 (2.8) 2/2 0/3
Rousettus leschenaulti 74 31 (41.9) 18/20 2‡/31
Total 183 34 (18.6) 20/22 2/34
Chaerephon plicata 130 0
Hipposideros armiger 1 0
Hipposideros cineraceus 3 0
Hipposideros larvatus 3 0
Hipposideros pomona 5 0
Hypsugo cadornae 25 0
Megaderma spasma 3 0
Miniopterus magnater 1 0
Scotophilus kuhi 45 0
Unidentified 52 0
Total 268 0

*+, positive; WB, Western blot; NT, neutralization test. Blank cells indicate that test was not done.
†Micro-NT was done only on specimens positive for Nipah virus by ELISA.
‡One of the NT-positive samples was negative by WB analysis.

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