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Your search keyword '"Kobayashi, Mutsuo"' showing total 20 results
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20 results on '"Kobayashi, Mutsuo"'

2. Isolation and characterization of Kabuto Mountain virus, a new tick-borne phlebovirus from Haemaphysalis flava ticks in Japan

Author

Ejiri, Hiroko, Lim, Chang-Kweng, Isawa, Haruhiko, Yamaguchi, Yukie, Fujita, Ryosuke, Takayama-Ito, Mutsuyo, Kuwata, Ryusei, Kobayashi, Daisuke, Horiya, Madoka, Posadas-Herrera, Guillermo, Iizuka-Shiota, Itoe, Kakiuchi, Satsuki, Katayama, Yukie, Hayashi, Toshihiko, Sasaki, Toshinori, Kobayashi, Mutsuo, Morikawa, Shigeru, Maeda, Ken, Mizutani, Tetsuya, Kaku, Koki, Saijo, Masayuki, and Sawabe, Kyoko

Published
2018
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6. Genetic and biological characterization of Muko virus, a new distinct member of the species Great Island virus (genus Orbivirus, family Reoviridae), isolated from ixodid ticks in Japan

Author

Ejiri, Hiroko, Lim, Chang-Kweng, Isawa, Haruhiko, Kuwata, Ryusei, Kobayashi, Daisuke, Yamaguchi, Yukie, Takayama-Ito, Mutsuyo, Kinoshita, Hitomi, Kakiuchi, Satsuki, Horiya, Madoka, Kotaki, Akira, Takasaki, Tomohiko, Maeda, Ken, Hayashi, Toshihiko, Sasaki, Toshinori, Kobayashi, Mutsuo, Saijo, Masayuki, and Sawabe, Kyoko

Published
2015
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7. Two hidden taxa in the Japanese encephalitis vector mosquito, Culex tritaeniorhynchus, and the potential for long-distance migration from overseas to Japan

Author

Arai, Satoru, primary, Kuwata, Ryusei, additional, Higa, Yukiko, additional, Maekawa, Yoshihide, additional, Tsuda, Yoshio, additional, Roychoudhury, Sudipta, additional, Bertuso, Arlene Garcia, additional, Phong, Tran Vu, additional, Yen, Nguyen Thi, additional, Etoh, Tomoki, additional, Otuka, Akira, additional, Matsumura, Masaya, additional, Nabeshima, Takeshi, additional, Taya, Keiko Tanaka, additional, Okabe, Nobuhiko, additional, Kobayashi, Mutsuo, additional, and Sawabe, Kyoko, additional

Published
2022
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9. Updated Distribution of Anopheline Mosquitoes (Diptera: Culicidae) in Hokkaido, Japan, and the First Evidence of Anopheles (Anopheles) Belenrae in Japan

Author

Sawabe, Kyoko, primary, Imanishi-Kobayashi, Nozomi, additional, Maekawa, Yoshihide, additional, Higa, Yukiko, additional, Kim, Kyeong Soon, additional, Hoshino, Keita, additional, Tsuda, Yoshio, additional, Hayashi, Toshihiko, additional, Nihei, Naoko, additional, Takai, Kenji, additional, Kurihara, Takeshi, additional, and Kobayashi, Mutsuo, additional

Published
2021
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12. Dengue Virus Infection in Aedes albopictus during the 2014 Autochthonous Dengue Outbreak in Tokyo Metropolis, Japan

Author

Kobayashi, Daisuke, primary, Murota, Katsunori, additional, Fujita, Ryosuke, additional, Itokawa, Kentaro, additional, Kotaki, Akira, additional, Moi, Meng Ling, additional, Ejiri, Hiroko, additional, Maekawa, Yoshihide, additional, Ogawa, Kohei, additional, Tsuda, Yoshio, additional, Sasaki, Toshinori, additional, Kobayashi, Mutsuo, additional, Takasaki, Tomohiko, additional, Isawa, Haruhiko, additional, and Sawabe, Kyoko, additional

Published
2018
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13. Retrospective search of dengue vector mosquito, Aedes albopictus in area visited by a German traveler that has contracted dengue Disease

Author

Kobayashi, Mutsuo, Komagata, Osamu, Yonejima, Mayuko, Maekawa, Yoshihide, Hirabayashi, Kimio, Hayashi, Toshihiko, Nihei, Naoko, Yoshida, Masahiro, Tsuda, Yoshio, and Sawabe, Kyoko

Subjects
Dengue, Japan, Autochthonous infection, viruses, fungi, German traveler, virus diseases, Population density, Aedes albopictus
Abstract

A German traveler developed dengue fever in late August 2013, following a direct flight from Germany. Autochthonous dengue virus (DENV) infection has not been reported in Japan. To evaluate the risk of autochthonous DENV transmission in Japan, the authors performed a retrospective search of the five areas visited by the German patient to determine the population density of dengue vector mosquito, Aedes albopictus. The annual mean temperature of each area was higher than 12 °C, which is considered suitable for the establishment of A. albopictus populations. Our retrospective search revealed the population density of A. albopictus to be high in the urban areas of Japan., Article, International Journal of Infectious Diseases.26:135-137(2014)

Published
2014

16. The infectious particle of insect-borne totivirus-like Omono River virus has raised ridges and lacks fibre complexes

Author

Okamoto, Kenta, primary, Miyazaki, Naoyuki, additional, Larsson, Daniel S. D., additional, Kobayashi, Daisuke, additional, Svenda, Martin, additional, Mühlig, Kerstin, additional, Maia, Filipe R. N. C., additional, Gunn, Laura H., additional, Isawa, Haruhiko, additional, Kobayashi, Mutsuo, additional, Sawabe, Kyoko, additional, Murata, Kazuyoshi, additional, and Hajdu, Janos, additional

Published
2016
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19. Analysis of Mosquito-Borne Flavivirus Superinfection in Culex tritaeniorhynchus (Diptera: Culicidae) Cells Persistently Infected with Culex Flavivirus (Flaviviridae)

Author

Kuwata, Ryusei, Isawa, Haruhiko, Hoshino, Keita, Sasaki, Toshinori, Kobayashi, Mutsuo, Maeda, Ken, and Sawabe, Kyoko

Abstract

Superinfection exclusion is generally defined as a phenomenon in which a pre-existing viral infection prevents a secondary viral infection; this has also been observed in infections with mosquito-borne viruses. In this study, we examined the superinfection exclusion of the vertebrate-infecting flaviviruses, Japanese encephalitis virus (JEV) and dengue virus (DENV), by stable and persistent infection with an insect-specific flavivirus, Culex flavivirus (CxFV), in a Culex tritaeniorhynchus Giles cell line (CTR cells). Our experimental system was designed based on the premise that wild Cx. tritaeniorhynchus mosquitoes naturally infected with CxFV are superinfected with JEV by feeding on JEV-infected animals. As a result, we found no evidence of the superinfection exclusion of both JEV and DENV by pre-existing CxFV infection at the cellular level. However, JEV superinfection induced severe cytopathic effects on persistently CxFV-infected CTR cells. These observations imply the possibility that JEV superinfection in CxFV-infected Cx. tritaeniorhynchus mosquitoes has an adverse effect on their fitness.

Published
2015
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20. Blowflies are potential vector for avian influenza virus at enzootic area in Japan.

Author

Fujita R, Tachi T, Hino M, Nagata K, Saiki M, Inumaru M, Higa Y, Itokawa K, Uemura N, Matsumura R, Kai I, Sawabe K, Kobayashi M, Isawa H, Kusakabe T, Matsuo K, and Kasai S

Subjects
Animals, Japan epidemiology, Insect Vectors virology, Calliphoridae, Influenza A Virus, H5N1 Subtype pathogenicity, Influenza A Virus, H5N1 Subtype genetics, Feces virology, Influenza in Birds virology, Influenza in Birds epidemiology, Influenza in Birds transmission, Birds virology
Abstract

High pathogenicity avian influenza (HPAI) poses a significant threat to both domestic and wild birds globally. The avian influenza virus, known for environmental contamination and subsequent oral infection in birds, necessitates careful consideration of alternative introduction routes during HPAI outbreaks. This study focuses on blowflies (genus Calliphora), in particular Calliphora nigribarbis, attracted to decaying animals and feces, which migrate to lowland areas of Japan from northern or mountainous regions in early winter, coinciding with HPAI season. Our investigation aims to delineate the role of blowflies as HPAI vectors by conducting a virus prevalence survey in a wild bird HPAI-enzootic area. In December 2022, 648 Calliphora nigribarbis were collected. Influenza virus RT-PCR testing identified 14 virus-positive samples (2.2% prevalence), with the highest occurrence observed near the crane colony (14.9%). Subtyping revealed the presence of H5N1 and HxN1 in some samples. Subsequent collections in December 2023 identified one HPAI virus-positive specimen from 608 collected flies in total, underscoring the potential involvement of blowflies in HPAI transmission. Our observations suggest C. nigribarbis may acquire the HPAI virus from deceased wild birds directly or from fecal materials from infected birds, highlighting the need to add blowflies as a target of HPAI vector control., (© 2024. The Author(s).)

Published
2024
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