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Niigata-shi, Japan

Dapat C.,Niigata University | Suzuki Y.,Niigata University | Kon M.,Japan Institute for Environmental Sciences | Tamura T.,Japan Institute for Environmental Sciences | And 6 more authors.
Japanese Journal of Infectious Diseases | Year: 2011

The objective of this study was to characterize the off-seasonal influenza virus A subtype H3N2, which caused an outbreak in an elderly hospital in Niigata, Japan. Virus isolates were sub typed by the hemagglutination-inhibition test and screened for antiviral drug sensitivity by real-time PCR using cycling probe technology and the 50% inhibitory concentration (IC50) method. Whole genome sequencing was performed in order to determine the phylogeny of the outbreak virus. Seven virus isolates were analyzed in this study, and the results showed that all belonged to the influenza virus A (H3N2). These viruses exhibited the S31N mutation in M2, which confers resistance to amantadine. The results of the IC50 analysis showed that these viruses were sensitive to both oseltamivir and zanamivir. Whole genome analysis revealed that the virus was similar to the A/Perth/16/2009 strain and that it is a triple reassortant virus with a 3+3+2 pattern of segment recombination. Source

Niigata Prefectural Government | Date: 2016-03-04


Hyodo K.,University of Miyazaki | Nakamura K.,Niigata University | Oyama M.,Niigata University | Yamazaki O.,Niigata Prefectural Government | And 4 more authors.
Tohoku Journal of Experimental Medicine | Year: 2010

A devastating earthquake causes psychological distress, and may increase suicide mortality thereafter, yet previous studies have made inconsistent conclusions regarding this issue. The purpose of the present study was to determine whether the 2004 Niigata-Chuetsu earthquake in Japan affected long-term mortality from suicide. We conducted a comparative study of suicide mortality rates during the 5-year period preceding and the 3-year period following the earthquake in the disaster area and a control area in Niigata Prefecture, by analyzing death certificate data from October 1, 1999, to September 30, 2007. In men, baseline suicide mortality rates (5 years preceding the earthquake) were 48.4 per 100,000 person-years in the disaster area and 46.1 in the control area, and suicide mortality rates during the 3-year period following the earthquake were 46.0 and 45.1, respectively. In women, baseline suicide mortality rates were 22.3 in the disaster area and 18.7 in the control area, and post-earthquake suicide mortality rates were 20.2 and 15.3, respectively. In consequence, the decrease in suicide mortality rate during the 3 years postearthquake was significantly higher in the disaster area (2.5) than in the control area (1.0) (p = 0.0013) in men, whereas the decrease in suicide mortality rate was 2.1 in the disaster area and 3.0 in the control area (p = 0.1246) in women. We have concluded that the long-term mortality from suicide after the earthquake decreases in men and increases in women, suggesting that post-earthquake suicide mortality is sexdependent. Post-earthquake suicide prevention strategies should more aggressively target women. © 2010 Tohoku University Medical Press. Source

Ogawa Y.,Niigata Prefectural Government | Tanabe N.,Niigata University | Honda A.,Niigata Prefectural Government | Honda A.,Niigata University | And 4 more authors.
Environmental Health and Preventive Medicine | Year: 2011

Objectives Point-of-purchase (POP) information at food stores could help promote healthy dietary habits. However, it has been difficult to evaluate the effects of such intervention on customers' behavior. We objectively evaluated the usefulness of POP health information for vegetables in the modification of customers' purchasing behavior by using the database of a point-of-sales (POS) system. Methods Two supermarket stores belonging to the same chain were assigned as the intervention store (store I) and control store (store C). POP health information for vegetables was presented in store I for 60 days. The percent increase in daily sales of vegetables over the sales on the same date of the previous year was compared between the stores by using the database of the POS system, adjusting for the change in monthly visitors from the previous year (adjusted Dsales). Results The adjusted Dsales significantly increased during the intervention period (Spearman's q = 0.258, P for trend = 0.006) at store I but did not increase at store C (q = -0.037, P for trend = 0.728). The growth of the mean adjusted Dsales of total vegetables from 30 days before the intervention period through the latter half of the intervention period was estimated to be greater at store than at store C by 18.7 percentage points (95% confidence interval 1.6-35.9). Conclusions Health-related POP information for vegetables in supermarkets can encourage customers to purchase and, probably, consume vegetables. © The Japanese Society for Hygiene 2011. Source

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