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Case Reports
. 2005 Feb;43(2):993-5.
doi: 10.1128/JCM.43.2.993-995.2005.

Isolation of an influenza C virus introduced into Japan by a traveler from Malaysia

Yoko Matsuzaki  1 , Katsuhiko Sato, Kanetsu Sugawara, Emi Takashita, Yasushi Muraki, Takayuki Morishita, Norimichi Kumagai, Sousuke Suzuki, Seiji Hongo
Affiliations
Case Reports

Isolation of an influenza C virus introduced into Japan by a traveler from Malaysia

Yoko Matsuzaki et al. J Clin Microbiol. 2005 Feb.

Abstract

An influenza C virus was isolated from a Japanese traveler who had visited Malaysia in April 1999. Phylogenetic analysis indicated that the genome composition of this virus was distinct from that of any other strain isolated in Japan. The possibility that a genetically unique influenza C virus was introduced into Japan by a traveler is shown.

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Figures

FIG. 1.
FIG. 1.
Phylogenetic tree of influenza C virus HE genes (nucleotides [nt] 64 to 1989). Viruses in the SP/378/82-related lineage are marked by asterisks. Japanese strains isolated between 1996 and 2000 are circled. Abbreviations are as follows: MI, Miyagi (Japan); CAL, California (United States); KY, Kyoto (Japan); KAN, Kansas (United States); GR, Greece.
FIG. 2.
FIG. 2.
Phylogenetic trees for the PB2 (nt 52 to520), PB1 (nt 50 to 425), P3 (nt 49 to 420), NP (nt 71 to 670), M (nt 26 to 1,147), and NS (nt 28 to 889) genes. Viruses having HE genes of SP/378/82-related lineage are marked by asterisks. Japanese strains isolated between 1996 and 2000 are circled.
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