Proactive Engagement of the Expert Meeting in Managing the Early Phase of the COVID-19 Epidemic, Japan, February-June 2020.

To deal with the risk of emerging diseases with many unknowns, close and timely collaboration and communication between science experts and policymakers are crucial to developing and implementing an effective science-based intervention strategy. The Expert Meeting, an ad hoc medical advisory body, was established in February 2020 to advise Japan's COVID-19 Response Headquarters. The group played an important role in the policymaking process, promoting timely situation awareness and developing science-based proposals on interventions that were promptly reflected in government actions.

An enterohaemorrhagic outbreak spread through the environment at an institute for people with intellectual disabilities in Japan in 2005.

Objective: An enterohaemorrhagic (EHEC) outbreak at an institute with multiple facilities for children and adults with intellectual disabilities was investigated to characterize the cases and identify risk factors for infection.

Methods: A case was defined as a resident, a staff member or a visitor at the institute from 16 May through 30 June 2005 testing positive for type 2 Vero toxin-producing EHEC O157:H7 (confirmed case) or exhibiting bloody diarrhoea for two or more days (probable case). We collected and analysed demographic, clinical, laboratory and individual behaviour data to identify possible risk factors for infection and infection routes.

Environmental Presence and Genetic Characteristics of Carbapenemase-Producing from Hospital Sewage and River Water in the Philippines.

This study aimed to evaluate the prevalence and genetic characteristics of carbapenemase-producing (CPE) in hospital sewage and river water in the Philippines, which has a typical tropical maritime climate. We collected 83 water samples from 7 hospital sewage and 10 river water sites. CPE were identified using CHROMagar mSuperCARBA, and Gram-negative strains were identified using matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) or 16S rRNA gene sequencing.

A Epidemiological Investigation of a Nosocomial Outbreak of Multidrug-Resistant Acinetobacter baumannii in a Critical Care Center in Japan, 2011-2012.

Volume 69, no. 2, p. 143-148, 2016.

A large outbreak of enterohaemorrhagic Escherichia coli O157, caused by low-salt pickled Napa cabbage in nursing homes, Japan, 2012.

Objective: In August 2012, an outbreak of enterohaemorrhagic Escherichia coli (EHEC) O157 infection was investigated by the City of Sapporo and Hokkaido Prefectural Government. The initial notification reported an illness affecting 94 residents of 10 private nursing homes distributed across multiple areas of Hokkaido, the northernmost island of Japan; at this time three cases were confirmed as EHEC O157 infection. The objectives of the investigation were to identify the source of infection and recommend control measures to prevent further illness.

Microbiological and molecular epidemiological analyses of community-associated methicillin-resistant Staphylococcus aureus at a tertiary care hospital in Japan.

Molecular characterization of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) is generally conducted referred to staphylococcal cassette chromosome mec (SCCmec) type IV or V. CA-MRSA is now a cause of concern since such strains have been isolated not only from individuals in a community but also from patients in healthcare settings. The aim of this study was to analyze microbiological and molecular epidemiological features of CA-MRSA strains at a Japanese tertiary care hospital using PCR based-open reading frame typing (POT).

A Epidemiological Investigation of a Nosocomial Outbreak of Multidrug-Resistant Acinetobacter baumannii in a Critical Care Center in Japan, 2011-2012.

In 2011, a multidrug-resistant Acinetobacter baumannii (MDRAB) outbreak occurred at a Japanese critical care center (CCC) in a tertiary care hospital. Multidrug-resistance in Japan is defined as resistance to the antimicrobials amikacin, carbapenem, and fluoroquinolone. We conducted a retrospective epidemiological investigation of this outbreak to identify the risk factors for MDRAB respiratory tract acquisition in this hospital.

[Adverse events during pemetrexed administration caused by concomitant nonsteroid anti-inflammatory therapy].

Pemetrexed, a folate metabolic antagonist, is considered to be effective against plural mesotheliomas, non-small cell lung cancer, and especially for non-squamous cell cancer. However, it has been reported to have adverse interactions with nonsteroid anti-inflammatory drugs(NSAIDs). In the present study, we compared the incidence of adverse events between patients receiving pemetrexed therapy with and without concomitant NSAID administration.

Epidemiological and genetic analyses of a diffuse outbreak of hepatitis A in Japan, 2010.

Background: Hepatitis A virus (HAV) is still one of the most common causative agents of acute hepatitis in Japan. Although a relatively small number of annual acute hepatitis A cases (approximately 100-150, 0.78-1.

[A high school measles outbreak--control measures and vaccine efficacy].

Epidemiological investigation of a March 2007 detected measles outbreak of 28 cases in a 792-student high school in Tokyo. Students with a vaccination history had significantly milder symptoms than those without, and no cases occurred among students having two of measles vaccine in two doses of measles vaccine in their childhood. Vaccine efficacy (VE) calculated in our investigation was 93.

[Global surveillance and the disease pandemics].

Humans experienced various disease pandemics in the history of the world. Disease can spread over the world more rapidly and in larger scale than in any other time in the past as the world is getting smaller. The World Health Organization established its innovative event-based surveillance system in close collaboration with many partners at global scale for early detection and rapid response to the public health events (PHE) of international importance in 1997.

Serological survey of avian H5N2-subtype influenza virus infections in human populations.

To investigate the distribution of antibodies against H5N2 influenza virus in humans living in Ibaraki prefecture, Japan, 266 single serum samples were collected to perform serological tests. Results were compared to investigate the relationship between positive results and several factors. The number of positive serum neutralization antibody titers (> or = 40) against avian influenza virus A/H5N2 was significantly greater (P < 0.

Human H5N2 avian influenza infection in Japan and the factors associated with high H5N2-neutralizing antibody titer.

Background: H5N2 avian influenza virus infection of humans has not been reported thus far. The first H5N2 avian influenza infection of poultry in Japan occurred in Ibaraki.

Methods: The subjects were workers at 35 chicken farms in Ibaraki Prefecture, where the H5N2 virus or antibody was isolated from chickens.

Outbreak of Chlamydia pneumoniae infection in a Japanese nursing home, 1999-2000.

Objective: To identify risk factors for infection and severe illness due to Chlamydia pneumoniae.

Methods: To identify risk factors for infection, we conducted a case-control study among nursing home residents who had onset of symptoms during December 1, 1999, to February 20, 2000. To identify risk factors for severe illness among nursing home residents, we conducted a retrospective cohort study.

Aeromonas trota strains, which agglutinate with Vibrio cholerae O139 Bengal antiserum, possess a serologically distinct fimbrial colonization factor.

Pili of Aeromonas trota strain 1220, which agglutinates with Vibrio cholerae O139 Bengal antiserum, were purified and characterized. The molecular mass of the subunit protein was estimated to be 20 kDa and the pl was 5 center dot 4. The pili were immunologically unrelated to the other Aeromonas pili reported so far.