K
Koichi Murakami
Researcher at National Institutes of Health
Publications - 75
Citations - 2001
Koichi Murakami is an academic researcher from National Institutes of Health. The author has contributed to research in topics: Salmonella enterica & Salmonella. The author has an hindex of 17, co-authored 73 publications receiving 1767 citations.
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Journal ArticleDOI
Genetic Analysis of Human Norovirus Strains in Japan in 2016-2017.
Koo Nagasawa,Yuki Matsushima,Takumi Motoya,Fuminori Mizukoshi,Yo Ueki,Naomi Sakon,Koichi Murakami,Tomomi Shimizu,Nobuhiko Okabe,Noriko Nagata,Komei Shirabe,Hiroto Shinomiya,Wataru Suzuki,Makoto Kuroda,Tsuyoshi Sekizuka,Yoshiyuki Suzuki,Akihide Ryo,Kiyotaka Fujita,Kazunori Oishi,Kazuhiko Katayama,Hirokazu Kimura,Hirokazu Kimura +21 more
TL;DR: The time-scale phylogeny suggested that the common ancestors of the 2016 strains VP1 gene and RdRp region diverged in 2006 and 1999, respectively, and that the 2016 strain was the progeny of a pre-2016 GII.2.2 strains.
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Increase in resistance to extended-spectrum cephalosporins in Salmonella isolated from retail chicken products in Japan.
Tamie Noda,Koichi Murakami,Yoshiki Etoh,Fuyuki Okamoto,Jun Yatsuyanagi,Nobuyuki Sera,Munenori Furuta,Daisuke Onozuka,Takahiro Oda,Tetsuo Asai,Shuji Fujimoto +10 more
TL;DR: The dissemination of ESC-resistant Salmonella containing plasmid-mediated bla CMY-2 in chicken products indicates the need for the development of continuous monitoring strategies in the interests of public health.
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Shiga toxin 2f-producing Escherichia albertii from a symptomatic human.
Koichi Murakami,Yoshiki Etoh,Eri Tanaka,Sachiko Ichihara,Kazumi Horikawa,Kimiko Kawano,Tadasuke Ooka,Yoshiaki Kawamura,Kenitiro Ito +8 more
TL;DR: The present study showed that some E. albertii strains, which are often misidentified as E. coli, produce Stx and likely cause diarrhea in humans, and further guidelines for the management and identification of Stx-producing E.Albertii are required in Japan.
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Chicken Meat Is an Infection Source of Salmonella Serovar Infantis for Humans in Japan
TL;DR: The results suggest that chicken meat is an infection source of Salmonella Infantis for humans in the Kyushu-Okinawa region, Japan, and showed the relatively high suitability of AFLP for application to epidemiological studies of Salborne Infantis.
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Environmental survey of salmonella and comparison of genotypic character with human isolates in Western Japan.
TL;DR: Salmonella Enteritidis, among multiple serovars of salmonellae in the environment, was thought to have distributed in reservoirs, laying hens, for several years, and continued to cause outbreaks in this area.