Relationship between Phage Lytic Spectra and Sequence Types in Extended-Spectrum β-Lactamase-Producing Escherichia coli Isolated in Japan.

The lytic spectrum of phages is usually limited to only a few strains of the same bacterial species that can lyse. In clinical molecular epidemiology, bacterial strains are commonly classified into sequence types (STs) using the multilocus sequence typing (MLST) approach. The aim of this study was to determine the association between the phage lytic spectrum and STs.

Spread of -Positive Methicillin-Resistant SCC Type II-ST764 Among Elderly Japanese in Nonacute Care Settings.

We investigated the prevalence and molecular epidemiology of methicillin-resistant (MRSA) among 356 residents of nine long-term care facilities (LTCFs) in Japan during 2015 and 2017. In total, 800 specimens were tested and 39 MRSA isolates were recovered from 31 (8.71%) residents.

Prevalence of CTX-M-Type Extended-Spectrum β-Lactamase-Producing B2-O25-ST131 R Among Residents in Nonacute Care Facilities in Japan.

We investigated the prevalence and characteristics of extended-spectrum β-lactamase (ESBL)-producing among 258 residents of long-term care facilities (LTCFs) in Japan. Out of 258 fecal samples collected from nine LTCFs between November 2015 and March 2017, we recovered 59 ESBL-producing isolates. All isolates carried genes, mainly (42.

Carbapenem-Nonsusceptible Haemophilus influenzae with Penicillin-Binding Protein 3 Containing an Amino Acid Insertion.

The prevalence of β-lactamase-negative ampicillin-resistant (BLNAR) has become a clinical concern. In BLNAR isolates, amino acid substitutions in penicillin-binding protein 3 (PBP3) are relevant to the β-lactam resistance. Carbapenem-nonsusceptible isolates have been rarely reported.