K. Ubukata

发表

Rapid decrease of 7-valent conjugate vaccine coverage for invasive pneumococcal diseases in pediatric patients in Japan.

K. Sunakawa, T. Wajima, Naoko Chiba, 2013, Microbial drug resistance.

Molecular cloning of the gene of a penicillin-binding protein supposed to cause high resistance to beta-lactam antibiotics in Staphylococcus aureus

F. Ishino, M. Matsuhashi, M. Wachi, 1986, Journal of bacteriology.

Genetic characteristics of piliated Streptococcus pneumoniae serotype 35B, increased after introduction of pneumococcal vaccines in Japan.

Tetsuya Matsumoto, Y. Miyazaki, Shigeki Nakamura, 2020, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Incidence of penicillin-resistantstreptococcus pneumoniae in Japan, 1993–1995

K. Ubukata, M. Konno, K. Okuzumi, 1996, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Comprehensive detection of causative pathogens using real-time PCR to diagnose pediatric community-acquired pneumonia

K. Sunakawa, Naoko Chiba, M. Morozumi, 2008, Journal of Infection and Chemotherapy.

Population structure of hyperinvasive serotype 12F, clonal complex 218 Streptococcus pneumoniae revealed by multilocus boxB sequence typing.

Alexey V. Rakov, D. Robinson, K. Ubukata, 2011, Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases.

Detection of pathogens by real-time PCR in adult patients with acute exacerbation of bronchial asthma

K. Kuwano, K. Nakayama, J. Araya, 2017, BMC Pulmonary Medicine.

Effects of Intrapartum Antibiotic Prophylaxis on Neonatal Acquisition of Group B Streptococci

H. Sakata, M. Murata, M. Morozumi, 2017, The Journal of pediatrics.

Household Transmission of Streptococcus pneumoniae among Siblings with Acute Otitis Media

N. Yamanaka, K. Ubukata, S. Yokota, 2002, Journal of Clinical Microbiology.

In Vitro Activity of Tebipenem, a New Oral Carbapenem Antibiotic, against β-Lactamase-Nonproducing, Ampicillin-Resistant Haemophilus influenzae

Akiko Ono, Naoko Chiba, M. Morozumi, 2010, Antimicrobial Agents and Chemotherapy.

Rapid detection of eight causative pathogens for the diagnosis of bacterial meningitis by real-time PCR

K. Sunakawa, Naoko Chiba, M. Morozumi, 2009, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Expression and inducibility in Staphylococcus aureus of the mecA gene, which encodes a methicillin-resistant S. aureus-specific penicillin-binding protein

M. Matsuhashi, K. Ubukata, M. Konno, 1989, Journal of bacteriology.

Distribution of emm type and antibiotic susceptibility of group A streptococci causing invasive and noninvasive disease.

K. Sunakawa, T. Wajima, K. Ubukata, 2008, Journal of medical microbiology.

In vitro Activities of Oral Cephem and Telithromycin Against Clinical Isolates of Major Respiratory Pathogens in Japan

K. Ubukata, A. Shimizu, K. Maebashi, 2007, Journal of Korean medical science.

In vitro activities of new ketolide, telithromycin, and eight other macrolide antibiotics against Streptococcus pneumoniae having mefA and ermB genes that mediate macrolide resistance

K. Sunakawa, S. Iwata, K. Ubukata, 2003, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Macrolide-resistant Mycoplasma pneumoniae: characteristics of isolates and clinical aspects of community-acquired pneumonia

M. Morozumi, K. Ubukata, Takashi Takahashi, 2010, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Increased Macrolide Resistance of Mycoplasma pneumoniae in Pediatric Patients with Community-Acquired Pneumonia

K. Sunakawa, Naoko Chiba, M. Morozumi, 2007, Antimicrobial Agents and Chemotherapy.

Emergence of Macrolide-Resistant Mycoplasma pneumoniae with a 23S rRNA Gene Mutation

M. Morozumi, S. Iwata, K. Ubukata, 2005, Antimicrobial Agents and Chemotherapy.

Molecular emm genotyping and antibiotic susceptibility of Streptococcus dysgalactiae subsp. equisimilis isolated from invasive and non-invasive infections.

Naoko Chiba, M. Morozumi, K. Ubukata, 2010, Journal of medical microbiology.

Distribution of fibronectin-binding protein genes (prtF1 and prtF2) and streptococcal pyrogenic exotoxin genes (spe) among Streptococcus pyogenes in Japan

N. Yamanaka, K. Ubukata, M. Hotomi, 2009, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Effects of Pneumococcal Conjugate Vaccine on Genotypic Penicillin Resistance and Serotype Changes, Japan, 2010–2017

Shigeo Hanada, T. Wajima, Naoko Chiba, 2018, Emerging infectious diseases.

Genetic characteristics and antibiotic resistance of Haemophilus influenzae isolates from pediatric patients with acute otitis media after introduction of 13-valent pneumococcal conjugate vaccine in Japan.

Y. Adachi, M. Morozumi, S. Iwata, 2019, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Co‐Infection with Respiratory Syncytial Virus Subgroup A and Streptococcus Pneumoniae Detected by a Comprehensive Real‐Time Polymerase Chain Reaction Assay in an Elderly Patient with Community‐Acquired Pneumonia

Naoko Chiba, M. Morozumi, K. Ubukata, 2009, Journal of the American Geriatrics Society.

Study of nasopharyngeal bacterial flora. Second report. Variations in nasopharyngeal bacterial flora in children aged 6 years or younger when administered antimicrobial agents. Part 1

K. Kaga, Y. Okamoto, Kunihiko Kobayashi, 2006, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Pandemic (H1N1) 2009–associated Pneumonia in Children, Japan

Haruo Watanabe, T. Fuchigami, H. Sakata, 2011, Emerging infectious diseases.

Pathogens in COPD exacerbations identified by comprehensive real-time PCR plus older methods

K. Kuwano, Y. Kaneko, K. Nakayama, 2015, International journal of chronic obstructive pulmonary disease.

Rapid optimization of antimicrobial chemotherapy given to pediatric patients with community-acquired pneumonia using PCR techniques with serology and standard culture

K. Sunakawa, Naoko Chiba, M. Morozumi, 2007, Journal of Infection and Chemotherapy.

Transduction of drug resistance to tetracycline, chloramphenicol, macrolides, lincomycin and clindamycin with phages induced from Streptococcus pyogenes.

K. Ubukata, M. Konno, R. Fujii, 1975, The Journal of antibiotics.

Bacteriological Study on Acute Otitis Media in Children

Toshimitsu Kobayashi, K. Ubukata, M. Suetake, 1999 .

Changes in Capsule and Drug Resistance of Pneumococci after Introduction of PCV7, Japan, 2010–2013

T. Wajima, Naoko Chiba, M. Morozumi, 2014, Emerging infectious diseases.

Changes in epidemiologic characteristics and antimicrobial resistance of Streptococcus pyogenes isolated over 10 years from Japanese children with pharyngotonsillitis.

T. Wajima, M. Morozumi, S. Iwata, 2020, Journal of Medical Microbiology.

Direct identification of Streptococcus agalactiae and capsular type by real-time PCR in vaginal swabs from pregnant women.

T. Wajima, Naoko Chiba, M. Morozumi, 2015, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Associations between capsular serotype, multilocus sequence type, and macrolide resistance in Streptococcus agalactiae isolates from Japanese infants with invasive infections

H. Sakata, T. Wajima, M. Morozumi, 2013, Epidemiology and Infection.

Dermal mast cells reduce progressive tissue necrosis caused by subcutaneous infection with Streptococcus pyogenes in mice.

T. Uchiyama, K. Imanishi, H. Matsui, 2011, Journal of medical microbiology.

CD46 Transgenic Mouse Model of Necrotizing Fasciitis Caused by Streptococcus pyogenes Infection

T. Uchiyama, K. Imanishi, H. Matsui, 2009, Infection and Immunity.

Application of Real-time PCR to Identify Carriers of Group B Streptococci (GBS) in Pregnant Women

K. Tamai, M. Morozumi, K. Ubukata, 2019, Kansenshogaku Zasshi.

Occurrence of a beta-lactam-inducible penicillin-binding protein in methicillin-resistant staphylococci

K. Ubukata, N. Yamashita, M. Konno, 1985, Antimicrobial Agents and Chemotherapy.

r-Lactam-Inducible Penicillin-Binding Protein in Methicillin-Resistant Staphylococci

K. Ubukata, N. Yamashita, M. Konno, 2022 .

Increased macrolide resistance of Mycoplasma pneumoniae in France directly detected in clinical specimens by real-time PCR and melting curve analysis.

M. Morozumi, K. Ubukata, A. Ménard, 2009, The Journal of antimicrobial chemotherapy.

Study of upper respiratory tract bacterial flora: first report. Variations in upper respiratory tract bacterial flora in patients with acute upper respiratory tract infection and healthy subjects and variations by subject age

K. Kaga, Y. Okamoto, Kunihiko Kobayashi, 2006, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Prevalence of Streptococcus Invasive Locus (sil) and Its Relationship with Macrolide Resistance among Group A Streptococcus Strains

N. Yamanaka, K. Ubukata, M. Hotomi, 2008, Journal of Clinical Microbiology.

Construction and functional analysis of fatty acid desaturase gene disruptants in Candida albicans.

T. Umeyama, S. Kajiwara, K. Ubukata, 2006, Microbiology.

Evolutionary paths of streptococcal and staphylococcal superantigens

Kayo Okumura, T. Kirikae, T. Miyoshi‐Akiyama, 2012, BMC Genomics.

Molecular epidemiological characterization in mucoid-type Streptococcus pneumoniae isolates obtained from invasive pneumococcal disease patients in Japan.

H. Kiyota, H. Mukae, T. Ishida, 2020, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Molecular Characteristics of Group B Streptococci Isolated from Adults with Invasive Infections in Japan

T. Wajima, M. Morozumi, S. Iwata, 2016, Journal of Clinical Microbiology.

Associations of macrolide and fluoroquinolone resistance with molecular typing in Streptococcus pyogenes from invasive infections, 2010-2012.

H. Sakata, T. Wajima, Naoko Chiba, 2013, International journal of antimicrobial agents.

Nonhemolytic Streptococcus pyogenes Isolates That Lack Large Regions of the sag Operon Mediating Streptolysin S Production

T. Wajima, K. Ubukata, Miho Yoshino, 2009, Journal of Clinical Microbiology.

Association of a Thr-371 Substitution in a Conserved Amino Acid Motif of Penicillin-Binding Protein 1A with Penicillin Resistance of Streptococcus pneumoniae

K. Ubukata, Y. Asahi, 1998, Antimicrobial Agents and Chemotherapy.

Diversity of Substitutions within or Adjacent to Conserved Amino Acid Motifs of Penicillin-Binding Protein 2X in Cephalosporin-Resistant Streptococcus pneumoniaeIsolates

K. Ubukata, Y. Asahi, Y. Takeuchi, 1999, Antimicrobial Agents and Chemotherapy.

Identification of penicillin and other beta-lactam resistance inStreptococcus pneumoniae by polymerase chain reaction

K. Ubukata, M. Konno, Y. Asahi, 1997, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Combinational detection of autolysin and penicillin-binding protein 2B genes of Streptococcus pneumoniae by PCR

K. Ubukata, M. Konno, Y. Asahi, 1996, Journal of clinical microbiology.

In vitro evaluation of the activity of β-lactams, new quinolones, and other antimicrobial agents againstStreptococcus pneumoniae

K. Ubukata, M. Konno, Y. Asahi, 1996, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Directly repeated insertion of 9-nucleotide sequence detected in penicillin-binding protein 2B gene of penicillin-resistant Streptococcus pneumoniae

K. Ubukata, M. Konno, Y. Asahi, 1996, Antimicrobial agents and chemotherapy.

Molecular epidemiologic characteristics of Streptococcus pneumoniae isolates from children with meningitis in Japan from 2007 through 2009

Akiko Ono, K. Sunakawa, Naoko Chiba, 2011, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Penicillin-binding proteins in Streptococcus pyogenes Part 2 Relationship between morphological changes induced by g-lactam antibiotics and the affinities of these antibiotics to penicillin-binding proteins

K. Ubukata, 2010 .

In vitro activity of LJC10,627, a new carbapenem antibiotic with high stability to dehydropeptidase I

S. Mitsuhashi, K. Ubukata, K. Nishiki, 1990, Antimicrobial Agents and Chemotherapy.

Relationship between intrapartum antibiotic prophylaxis and group B streptococcal colonization dynamics in Japanese mother-neonate pairs.

M. Morozumi, S. Iwata, K. Ubukata, 2021, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Study of nasopharyngeal bacterial flora. Variations in nasopharyngeal bacterial flora in schoolchildren and adults when administered antimicrobial agents

K. Kaga, Y. Okamoto, Kunihiko Kobayashi, 2007, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Adult community‐acquired pneumonia caused by macrolide resistant Mycoplasma pneumoniae

K. Ariyoshi, M. Morozumi, K. Ubukata, 2009, Respirology.

Prolonged Mycoplasma pneumoniae infection in an elderly patient with community-acquired pneumonia

Naoko Chiba, M. Morozumi, K. Ubukata, 2009, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Application of PCR for Mycoplasma pneumoniae detection in children with community-acquired pneumonia

Naoko Chiba, M. Morozumi, S. Iwata, 2004, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

A practical approach estimating etiologic agents using real-time PCR in pediatric inpatients with community-acquired pneumonia

H. Sakata, Naoko Chiba, M. Morozumi, 2012, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Neonatal streptococcal toxic shock syndrome caused by Streptococcus dysgalactiae subsp. equisimilis.

Haruo Watanabe, K. Ubukata, T. Ogihara, 2010, The Pediatric infectious disease journal.

Capsular Type and Antibiotic Resistance in Streptococcus agalactiae Isolates from Patients, Ranging from Newborns to the Elderly, with Invasive Infections

H. Sakata, K. Sunakawa, S. Iwata, 2009, Antimicrobial Agents and Chemotherapy.

Problems associated with high prevalence of multidrug-resistant bacteria in patients with community-acquired infections

K. Ubukata, 2003, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Rapid effectiveness of minocycline or doxycycline against macrolide-resistant Mycoplasma pneumoniae infection in a 2011 outbreak among Japanese children.

H. Sakata, Naoko Chiba, M. Morozumi, 2012, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Multilocus Sequence Typing of Mycoplasma pneumoniae, Japan, 2002–2016

Y. Adachi, M. Morozumi, S. Iwata, 2018, Emerging infectious diseases.

A comparative clinical study of macrolide-sensitive and macrolide-resistant Mycoplasma pneumoniae infections in pediatric patients

K. Sunakawa, T. Ebihara, M. Morozumi, 2009, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Simultaneous Detection of Pathogens in Clinical Samples from Patients with Community-Acquired Pneumonia by Real-Time PCR with Pathogen-Specific Molecular Beacon Probes

Naoko Chiba, M. Morozumi, S. Iwata, 2006, Journal of Clinical Microbiology.

Contribution of beta-lactamase and PBP amino acid substitutions to amoxicillin/clavulanate resistance in beta-lactamase-positive, amoxicillin/clavulanate-resistant Haemophilus influenzae.

M. Jacobs, K. Ubukata, B. Bozdoğan, 2003, The Journal of antimicrobial chemotherapy.

Etiology and clinical study of community-acquired pneumonia in 157 hospitalized children

K. Ubukata, E. Nakayama, Y. Yanagawa, 2006, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Cloning and expression of the norA gene for fluoroquinolone resistance in Staphylococcus aureus

K. Ubukata, M. Konno, N. Itoh-Yamashita, 1989, Antimicrobial Agents and Chemotherapy.

[Identification of penicillin-resistant Streptococcus pneumoniae in nasopharynx of patient with acute otitis media by PCR].

N. Yamanaka, K. Ubukata, M. Konno, 1998, Nihon Jibiinkoka Gakkai kaiho.

Differentiation of β-lactamase-negative ampicillin-resistant Haemophilus influenzae from other H. influenzae strains by a disc method

K. Sunakawa, Naoko Chiba, S. Iwata, 2002, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Enhancement of bactericidal activity against group B streptococci with reduced penicillin susceptibility by uptake of gentamicin into cells resulting from combination with β-lactam antibiotics.

Mamiko Sato, M. Murata, M. Morozumi, 2017, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Genotypic characterization of Haemophilus influenzae isolates from paediatric patients in Japan

Y. Adachi, M. Morozumi, S. Iwata, 2018, Journal of medical microbiology.

Longitudinal surveillance of Haemophilus influenzae isolates from pediatric patients with meningitis throughout Japan, 2000–2011

K. Sunakawa, Naoko Chiba, M. Morozumi, 2013, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

High prevalence of type b beta-lactamase-non-producing ampicillin-resistant Haemophilus influenzae in meningitis: the situation in Japan where Hib vaccine has not been introduced.

Akiko Ono, K. Sunakawa, Naoko Chiba, 2006, The Journal of antimicrobial chemotherapy.

Application of the real-time PCR method for genotypic identification of β-lactam resistance in isolates from invasive pneumococcal diseases.

Naoko Chiba, M. Morozumi, K. Ubukata, 2012, Microbial drug resistance.

Clinical Studies on Acute Otitis Media in children under 10 years of age in Sendai city

K. Ubukata, M. Suetake, Y. Shibahara, 1999 .

Protective properties of a fusion pneumococcal surface protein A (PspA) vaccine against pneumococcal challenge by five different PspA clades in mice.

K. Ishii, D. Briles, K. Oishi, 2014, Vaccine.

Diversity of amino acid substitutions of penicillin-binding proteins in penicillin-non-susceptible and non-vaccine type Streptococcus pneumoniae.

Shigeki Nakamura, S. Iwata, K. Ubukata, 2022, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Clinical aspects of invasive infections with Streptococcus dysgalactiae ssp. equisimilis in Japan: differences with respect to Streptococcus pyogenes and Streptococcus agalactiae infections.

K. Sunakawa, K. Ubukata, K. Sunaoshi, 2010, Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases.

In Vitro Activity of Tebipenem, a New Oral Carbapenem Antibiotic, against Penicillin-Nonsusceptible Streptococcus pneumoniae

M. Konomi, K. Sunakawa, M. Morozumi, 2005, Antimicrobial Agents and Chemotherapy.

Antibiotic Susceptibility in Relation to Penicillin-Binding Protein Genes and Serotype Distribution of Streptococcus pneumoniae Strains Responsible for Meningitis in Japan, 1999 to 2002

K. Sunakawa, Naoko Chiba, S. Iwata, 2004, Antimicrobial Agents and Chemotherapy.

Evaluation of PCR primers to screen for Streptococcus pneumoniae isolates and beta-lactam resistance, and to detect common macrolide resistance determinants.

M. Jacobs, K. Ubukata, P. Appelbaum, 2001, The Journal of antimicrobial chemotherapy.

Respiratory Distress in Human Metapneumovirus Infection with High-inflammatory Cytokinemia

M. Morozumi, S. Iwata, K. Ubukata, 2012 .

Late-onset invasive group B Streptococcal infection with serotype VIII in a neonate having congenital biliary atresia.

Naoko Chiba, M. Morozumi, S. Iwata, 2013, Pediatrics and neonatology.

[Analysis of clinical features of community-acquired pneumonia caused by pediatric respiratory syncytial virus and human metapneumovirus].

K. Sunakawa, M. Morozumi, S. Iwata, 2010, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

Drastic reduction in pneumococcal meningitis in children owing to the introduction of pneumococcal conjugate vaccines: Longitudinal analysis from 2002 to 2016 in Japan.

M. Morozumi, S. Iwata, K. Ubukata, 2020, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Antibiotic susceptibility in relation to genotype of Streptococcus pneumoniae, Haemophilus influenzae, and Mycoplasma pneumoniae responsible for community-acquired pneumonia in children

H. Sakata, Naoko Chiba, M. Morozumi, 2013, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Purification and characterization of aminoglycoside-modifying enzymes from Staphylococcus aureus and Staphylococcus epidermidis

K. Ubukata, N. Yamashita, M. Konno, 1984, Antimicrobial Agents and Chemotherapy.

[Emm typing by genetic identification of Streptococcus dysgalactiae subsp. equisimilis and susceptibility to oral antibiotics].

K. Ubukata, K. Okuzumi, K. Sunaoshi, 2006, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

Nucleotide sequence and characterization of the Staphylococcus aureus norA gene, which confers resistance to quinolones

K. Ubukata, M. Konno, S. Nakamura, 1990, Journal of bacteriology.

Clinical features of Mycoplasma pneumoniae infections in the 2010 epidemic season: report of two cases with unusual presentations.

M. Morozumi, S. Iwata, K. Ubukata, 2013, Pediatrics and neonatology.

Killing kinetics of minocycline, doxycycline and tosufloxacin against macrolide-resistant Mycoplasma pneumoniae.

M. Morozumi, S. Iwata, K. Ubukata, 2017, International journal of antimicrobial agents.

Characterization of children with Mycoplasma pneumoniae infection detected by rapid polymerase chain reaction technique

Naoko Chiba, M. Morozumi, K. Ubukata, 2004, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Sequence Type Changes Associated with Decreasing Macrolide-Resistant Mycoplasma pneumoniae, Japan

Kota Saito, M. Morozumi, Michi Shouji, 2020, Emerging infectious diseases.

Invasive infection caused by Streptococcus dysgalactiae subsp. equisimilis: characteristics of strains and clinical features

Haruo Watanabe, K. Ubukata, Takashi Takahashi, 2011, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Inhibitory Effects of Statins on Cytomegalovirus Production in Human Cells: Comprehensive Analysis of Gene Expression Profiles

T. Murayama, Y. Ishigaki, T. Takegami, 2011 .

Antibiotic susceptibility according to genotype of penicillin-binding protein and macrolide resistance genes, and serotype of Streptococcus pneumoniae isolates from community-acquired pneumonia in children.

Naoko Chiba, M. Morozumi, S. Iwata, 2005, The Journal of antimicrobial chemotherapy.

[Trends of fluoroquinolone-resistant strains isolated from clinical materials].

K. Ubukata, M. Konno, S. Kawakami, 1988, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

Diversity of ampicillin-resistance genes in Haemophilus influenzae in Japan and the United States.

K. Sunakawa, Naoko Chiba, K. Ubukata, 2003, Microbial drug resistance.

Association of Amino Acid Substitutions in Penicillin-Binding Protein 3 with β-Lactam Resistance in β-Lactamase-Negative Ampicillin-Resistant Haemophilus influenzae

K. Yamamoto, K. Sunakawa, Naoko Chiba, 2001, Antimicrobial Agents and Chemotherapy.

Invasive Haemophilus influenzae infections in children in Kamikawa subprefecture, Hokkaido, Japan, 2006-2015: The effectiveness of H. influenzae type b vaccine.

H. Sakata, Y. Adachi, M. Morozumi, 2017, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Molecular Evolution of β-Lactam-Resistant Haemophilus influenzae: 9-Year Surveillance of Penicillin-Binding Protein 3 Mutations in Isolates from Japan

K. Ubukata, Yumiko Sanbongi, Takahisa Suzuki, 2006, Antimicrobial Agents and Chemotherapy.

Diverse mutations in the ftsI gene in ampicillin-resistant Haemophilus influenzae isolates from pediatric patients with acute otitis media

Naoko Chiba, M. Morozumi, K. Ubukata, 2010, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Restriction maps of the regions coding for methicillin and tobramycin resistances on chromosomal DNA in methicillin-resistant staphylococci

M. Matsuhashi, K. Ubukata, M. Song, 1989, Antimicrobial Agents and Chemotherapy.

Evaluation of new immunochromatographic assay kit for adenovirus detection in throat swab: comparison with culture and real-time PCR results.

H. Shimizu, Y. Matsushima, M. Morozumi, 2014, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Molecular Characterization of Invasive Streptococcus dysgalactiae subsp. equisimilis, Japan

Shigeo Hanada, T. Wajima, Naoko Chiba, 2016, Emerging infectious diseases.

Concomitant regulation of host tissue-destroying virulence factors and carbohydrate metabolism during invasive diseases induced by group g streptococci.

T. Kirikae, T. Miyoshi‐Akiyama, Y. Shimomura, 2013, The Journal of infectious diseases.

Clinical aspects of invasive infection with Streptococcus dysgalactiae subsp. equisimilis in elderly patients

Naoko Chiba, K. Ubukata, Y. Hirono, 2010, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Etiology of Acute Otitis Media and Characterization of Pneumococcal Isolates After Introduction of 13-Valent Pneumococcal Conjugate Vaccine in Japanese Children

M. Morozumi, S. Iwata, K. Ubukata, 2018, The Pediatric infectious disease journal.

A CD46 transgenic mouse model for studying the histopathology of arthritis caused by subcutaneous infection with Streptococcus dysgalactiae subspecies equisimilis.

K. Matsuo, Y. Takada, H. Matsui, 2011, Journal of medical microbiology.

Complete genome sequencing and analysis of a Lancefield group G Streptococcus dysgalactiae subsp. equisimilis strain causing streptococcal toxic shock syndrome (STSS)

Kayo Okumura, T. Kirikae, T. Miyoshi‐Akiyama, 2011, BMC Genomics.

Recurrence of occult pneumococcal bacteremia by an identical strain in an apparently healthy child.

Meng Chen, K. Ubukata, T. Fukaya, 2007, The Journal of infection.

Epidemiology of Acute Otitis Media in Children After Introduction of the 13-Valent Pneumococcal Conjugate Vaccine

T. Tajima, M. Morozumi, S. Iwata, 2018, Nippon Jibiinkoka Gakkai Kaiho.

Development and evaluation of a loop-mediated isothermal amplification assay for rapid detection of Mycoplasma pneumoniae.

R. Saito, K. Koike, K. Moriya, 2005, Journal of medical microbiology.

[Identification of bacterial strain at each episode of recurrent acute otitis media].

K. Ubukata, M. Suetake, K. Ohyama, 2000, Nihon Jibiinkoka Gakkai kaiho.

Serotype Changes and Drug Resistance in Invasive Pneumococcal Diseases in Adults after Vaccinations in Children, Japan, 2010–2013

Shigeo Hanada, T. Wajima, Naoko Chiba, 2015, Emerging infectious diseases.

[Molecular features of beta-hemolytic streptococci isolated from blood in adult invasive infection and the clinical background factors].

Naoko Chiba, K. Ubukata, Takashi Takahashi, 2010, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

Emergence of Macrolide-Resistant Mycoplasma pneumoniae with a 23S rRNA Gene Mutation

M. Morozumi, S. Iwata, K. Ubukata, 2005, Antimicrobial Agents and Chemotherapy.

Genome Evolution to Penicillin Resistance in Serotype 3 Streptococcus pneumoniae by Capsular Switching

Naoko Chiba, M. Morozumi, S. Iwata, 2017, Antimicrobial Agents and Chemotherapy.

Evolutionary paths of streptococcal and staphylococcal superantigens

Kayo Okumura, T. Kirikae, T. Miyoshi‐Akiyama, 2012, BMC Genomics.

Comparative efficacies of different antibiotic treatments to eradicate nontypeable Haemophilus influenzae infection

S. Ōmura, H. Matsui, K. Ubukata, 2008, BMC infectious diseases.

Spontaneous pneumomediastinum complicating pneumonia in children infected with the 2009 pandemic influenza A (H1N1) virus.

M. Morozumi, K. Ubukata, Takashi Takahashi, 2010, Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases.

Serotype and antibiotic resistance of isolates from patients with invasive pneumococcal disease in Japan

T. Komori, K. Sunakawa, M. Morozumi, 2009, Epidemiology and Infection.

[Childhood bacterial meningitis trends in Japan from 2005 to 2006].

K. Sunakawa, S. Iwata, K. Ubukata, 2008, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

Bronchial Casts and Pandemic (H1N1) 2009 Virus Infection

Haruo Watanabe, T. Fuchigami, M. Morozumi, 2010, Emerging infectious diseases.

Study of nasopharyngeal bacterial flora. Second report. Variations in nasopharyngeal bacterial flora in children aged 6 years or younger when administered antimicrobial agents. Part 2

K. Kaga, Y. Okamoto, Kunihiko Kobayashi, 2006, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Risk factors and pathogen characteristics associated with unfavorable outcomes among adults with pneumococcal meningitis in Japan, 2006 to 2016.

Shigeo Hanada, S. Kamei, M. Morozumi, 2023, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Multiple comorbidities increase the risk of death from invasive pneumococcal disease under the age of 65 years.

S. Fujishima, Shigeo Hanada, M. Morozumi, 2021, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Comparative characteristics of the background and blood test findings in adults with pneumococcal pneumonia and invasive pneumococcal disease: A retrospective study.

Tetsuya Matsumoto, Shigeki Nakamura, K. Ubukata, 2021, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Correction: Host Factors and Biomarkers Associated with Poor Outcomes in Adults with Invasive Pneumococcal Disease

Shigeo Hanada, K. Kishi, T. Wajima, 2016, PloS one.

Host Factors and Biomarkers Associated with Poor Outcomes in Adults with Invasive Pneumococcal Disease

Shigeo Hanada, K. Kishi, T. Wajima, 2016, PloS one.

Characteristic findings of pediatric inpatients with pandemic (H1N1) 2009 virus infection among severe and nonsevere illnesses

Keita Matsubara, Osamu Komiyama, Satoshi Iwata, 2011, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Homology of mecA gene in methicillin-resistant Staphylococcus haemolyticus and Staphylococcus simulans to that of Staphylococcus aureus

M. Matsuhashi, K. Ubukata, M. Song, 1990, Antimicrobial Agents and Chemotherapy.

The Effect of Mupirocin Nasal Ointment for Eliminating Staphylococcus aureus Including MRSA

K. Ubukata, Y. Shibata, K. Totsuka, 1993 .

New Plasmid (pTU512), Mediating Resistance to Penicillin, Erythromycin, and Kanamycin, from Clinical Isolates of Staphylococcus aureus

K. Ubukata, M. Sasatsu, M. Konno, 1978, Antimicrobial Agents and Chemotherapy.

Identification of pathogens by comprehensive real-time PCR versus conventional methods in community-acquired pneumonia in Japanese adults

K. Kuwano, Y. Kaneko, K. Nakayama, 2016, Infectious diseases.

A highly susceptible CD46 transgenic mouse model of subcutaneous infection with Streptococcus dysgalactiae subspecies equisimilis.

H. Matsui, K. Ubukata, Takashi Takahashi, 2016, Journal of Infection and Chemotherapy.

[Large-scale questionnaire surveillance concerning invasive infections with group C and G streptococci].

K. Ubukata, K. Okuzumi, K. Sunaoshi, 2006, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

Rapidly Increasing Prevalence of β-Lactamase-Nonproducing, Ampicillin-Resistant Haemophilus influenzae Type b in Patients with Meningitis

K. Sunakawa, Naoko Chiba, S. Iwata, 2004, Antimicrobial Agents and Chemotherapy.

Simultaneous and Rapid Detection of Causative Pathogens in Community-acquired Pneumonia by Real-time PCR (1167)

K. Ubukata, 2008 .

Therapeutic effect of meropenem on an experimental guinea pig model of meningitis with type b β-lactamase-nonproducing ampicillin-resistant Haemophilus influenzae

Y. Ueda, K. Sunakawa, K. Ubukata, 2013, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Nucleotide Sequence andCharacterization ofthe Staphylococcus aureus norAGene,WhichConfers Resistance toQuinolones

K. Ubukata, M. Konno, S. Nakamura, 1990 .

An infant with concurrent serotype 6C invasive pneumococcal disease and infectious mononucleosis.

S. Iwata, K. Ubukata, T. Iwai, 2017, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

Community-acquired pneumonia caused by macrolide-resistant Mycoplasma pneumoniae in adults.

A. Miyamoto, Toshitaka Sato, Yui Takahashi, 2014, Internal medicine.

Antibiotic Susceptibility in Relation to Penicillin-Binding Protein Genes and Serotype Distribution of Streptococcus pneumoniae Strains Responsible for Meningitis in Japan, 1999 to 2002

K. Sunakawa, Naoko Chiba, S. Iwata, 2004, Antimicrobial Agents and Chemotherapy.

Household Transmission of Streptococcus pneumoniae among Siblings with Acute Otitis Media

N. Yamanaka, K. Ubukata, S. Yokota, 2002, Journal of Clinical Microbiology.

Pathogens in COPD exacerbations identified by comprehensive real-time PCR plus older methods

K. Kuwano, Y. Kaneko, K. Nakayama, 2015, International journal of chronic obstructive pulmonary disease.

Direct detection by real-time PCR of ftsI gene mutations affecting MICs of β-lactam agents for Haemophilus influenzae isolates from meningitis

Akiko Ono, Naoko Chiba, K. Ubukata, 2011, Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy.

[Trends in pediatric bacterial meningitis in Japan (2003-2004)].

K. Sunakawa, S. Iwata, K. Ubukata, 2006, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

[The trend of childhood bacterial meningitis in Japan (2000-2002)].

K. Sunakawa, S. Iwata, K. Ubukata, 2004, Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases.

Methicillin-Resistant Staphylococcus aureus ST398, Italy

Haruo Watanabe, K. Ubukata, Miyuki Morozumi, 2019 .

Associations between capsular serotype, multilocus sequence type, and macrolide resistance in Streptococcus agalactiae isolates from Japanese infants with invasive infections

H. Sakata, T. Wajima, S. Iwata, 2013, Epidemiology and Infection.

Prevalence of macrolide resistance among group A streptococci isolated from pharyngotonsillitis.

T. Wajima, Naoko Chiba, Michi Shouji, 2014, Microbial drug resistance.