Publications by authors named "Asami Sasaki"

Article Synopsis
  • Getah virus (GETV), which is spread by mosquitoes and affects various animals, causes fever, rash, and leg edema in infected horses.
  • The study focused on Noma horses, a native breed in Japan, to investigate the occurrence of GETV infections among them.
  • Serum tests revealed that anti-GETV antibody levels in Noma horses were significantly higher in samples from 2017 compared to those from 2012, indicating an epidemic of GETV in Japan around 2012.
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In order to facilitate assists in surgical procedure, it is important for scrub nurses to understand the operation procedure and to share the operation status with attending surgeons. The potential utility of head-mounted display as a new imaging monitor has been proposed in the medical field. This study prospectively evaluated the usefulness of see-through-type head-mounted display as a novel intraoperative instructional tool for scrub nurses.

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Background: Japan has implemented various school actions during seasonal influenza outbreaks since the 1950's under the School Health Law. However, the effective duration, extent, and timing of closures remain unresolved.

Materials And Methods: We conducted a retrospective study on the relationship between elementary class closures and influenza outbreak control during four consecutive influenza seasons from the 2004-2005 to 2007-2008 school years in Joetsu, Niigata, Japan.

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Background: The spread of influenza viruses in a community are influenced by several factors, but no reports have focused on the relationship between the incidence of influenza and characteristics of small neighborhoods in a community. We aimed to clarify the relationship between the incidence of influenza and neighborhood characteristics using GIS and identified the type of small areas where influenza occurs frequently or infrequently.

Methods: Of the 19,077 registered influenza cases, we analyzed 11,437 influenza A and 5,193 influenza B cases that were diagnosed by the rapid antigen test in 66-86 medical facilities in Isahaya City, Japan, from 2004 to 2008.

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Phylogenetic analysis of respiratory syncytial virus (RSV) group B genotype BA strains from the 2002-2003 to 2009-2010 seasons collected in Niigata, Japan, revealed four distinct clusters, designated new BA genotypes BA7, BA8, BA9, and BA10. These new genotypes were not associated with large outbreaks in the community.

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Article Synopsis
  • School administrators often lack evidence-based guidelines for deciding on school closures during influenza outbreaks.
  • Researchers created an algorithm based on real data from elementary school absentee rates in Japan.
  • The algorithm aims to help determine the best timing for school closures to effectively manage and control influenza outbreaks.
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A total of 1,041 human influenza A virus isolates were collected at a clinic in Niigata, Japan, during eight influenza seasons from 2000 to 2007. The H3N2 subtype accounted for 75.4% of the isolates, and the rest were H1N1.

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In recent years, a dramatic increase of amantadine-resistant influenza A has occurred globally, but limited data have been available on the clinical course of patients developed amantadine-resistant viruses. We compared fever reduction between patients who developed resistance or remained sensitive in a pediatric clinic in Niigata, Japan, from 2000 to 2006. A total of 2,802 clinical samples were collected from patients who visited the pediatric outpatient clinic with influenza like illness during the seven influenza epidemic seasons.

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Oseltamivir has been used for treatment of influenza A and B infections, but recent reports documented that it was less active against the latter. We compared the effectiveness of oseltamivir in children between laboratory confirmed influenza A and B over 4 influenza seasons from 2001 to 2005 in a pediatric clinic in Japan. Among 1,848 patients screened, 299 influenza A and 209 influenza B patients were administered oseltamivir (treated groups), and 28 influenza A and 66 influenza B patients were assigned as non-treated groups.

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Article Synopsis
  • High vaccine coverage in Niigata prevented measles outbreaks from 1997 to 2003, but a significant outbreak occurred during spring 2003 linked to sporting events.
  • Mandatory case reports from high schools revealed 27 outbreaks, affecting 192 individuals (186 students, 6 teachers), with a higher hospitalization rate among unvaccinated patients.
  • The study suggests that even outdoor sporting events can be risk factors for measles transmission, indicating the need for timely outbreak control measures.
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Objective: To evaluate the antibody response to influenza vaccines in nursing home residents and healthcare workers (HCWs) and its relation to residents' functional and chronic disease status during four successive seasons.

Design: Before-after study.

Setting: Nine nursing homes during the 1998-1999 season and two during the 1999-2000, 2000-2001, and 2001-2002 seasons.

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Background: Human metapneumoviruses (hMPVs) are recognized as a leading cause of respiratory infections in young infants in many countries. The objective of this study was to identify links between hMPV and influenza virus infections among children with influenza-like illness.

Method: This study was conducted in 2 influenza seasons (2002-2003 and 2003-2004) at 2 pediatric outpatient clinics in Niigata city, Japan.

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To study the molecular epidemiology of respiratory syncytial virus (RSV) in a community, children with acute respiratory symptoms at a pediatric outpatient clinic in Niigata, Japan, were analyzed over three seasons from November 2001 to July 2004. Of 499 nasopharyngeal aspirate specimens, 185 (37.1%) were RSV positive, and only 8 (4.

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From 1992 to 1999, we analyzed >2.5 million cases of influenzalike illness (ILI). Nationwide influenza epidemics generally lasted 3-4 months in winter.

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