Molecular characterization of methicillin-susceptible/resistant Staphylococcus aureus from bloodstream infections in northern Japan: The dominance of CC1-MRSA-IV, the emergence of human-associated ST398 and livestock-associated CC20 and CC97 MSSA.

Objectives: Staphylococcus aureus (S. aureus) is a major cause of bloodstream infections. The recent epidemiological features and antimicrobial resistance trend were analysed for methicillin-resistant and susceptible S.

Serotype distribution and antimicrobial resistance of isolated from children in Japan, 2023.

Background: The prevalence of serotypes and antimicrobial resistance of was characterized among children thirteen years after the licensure of the pneumococcal conjugate vaccine (PCV) in Japan.

Methods: A total of 353 pneumococcal isolates were collected from Japanese children between March and July 2023. All the isolates were serotyped using genetic methods and tested for susceptibility to 14 antimicrobial agents.

Genetic characterization of methicillin-resistant / susceptible (MRSA/MSSA) and clinical isolates in Bangladesh: Dominance of ST6-MRSA-IV/t304 and detection of / in ST8-MSSA/t008.

Objectives: Coagulase-positive staphylococcus (CoPS), represented by , is a major cause of infections in humans. This study aimed to investigate molecular epidemiological characteristics, antimicrobial resistance, and their trends of CoPS in Bangladesh.

Methods: Clinical isolates of CoPS were collected from two medical institutions in Bangladesh for a 2-year period and analyzed for their species, genotypes, virulence factors, antimicrobial susceptibility, and resistance determinants.

Molecular Epidemiological Characterization of Methicillin-Resistant from Bloodstream Infections in Northern Japan: Increasing Trend of CC1 and Identification of ST8-SCC IVa USA300-Like Isolate Lacking Arginine Catabolic Mobile Element.

Methicillin-resistant (MRSA) is a major infectious disease pathogen, and its molecular epidemiological profile has been changing. In this study, a total of 279 MRSA isolates were collected from patients with bloodstream infection (BSI) in Hokkaido, northern main island of Japan, for a 2-year period from August 2019 to July 2021. CC5 (ST5/ST764)-MRSA-IIa (SCC-IIa) (47%,  = 132) and CC1 (ST1/ST2725/ST2764)-MRSA-IVa (42%,  = 116) were found to be major lineages, with CC8-MRSA-IVa being lower prevalence (5%,  = 13).