Publications by authors named "M Ohkusu"

Article Synopsis
  • Polymerase chain reaction-based open reading frame typing (POT) was used to study MRSA strains from neonatal intensive care units, focusing on their relationship with nosocomial infections and specific genes.
  • In total, 44 MRSA strains were analyzed, revealing 14 different POT types, with 28 strains identified as nosocomial infections and 11 strains carrying toxin-producing genes.
  • The study concluded that while certain POT types are associated with nosocomial infections, there wasn't a clear link between the presence of toxin-producing genes or antiseptic resistance and these infections, suggesting other factors may play a role.
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Objectives: In Japan, population-based epidemiological data on respiratory syncytial virus (RSV) infections are limited. To elucidate the epidemiology of RSV before the introduction of new prophylactic drugs, we conducted a population-based study during and after the SARS-CoV-2 pandemic.

Methods: This study was performed in four hospitals in Chiba City and three hospitals in Ichihara City.

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Article Synopsis
  • Understanding the in-vivo dynamics of pneumococci is crucial for investigating carriage in patients with invasive pneumococcal disease (IPD).
  • This study compared genomic and morphological differences between a capsular strain from blood and a non-capsular strain from sputum in a patient with IPD.
  • Findings indicated the blood strain was encapsulated while the sputum strain was non-encapsulated with a higher biofilm-forming capacity, suggesting a potential morphological change in Streptococcus pneumoniae during infection.
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Salmonella enterica subspecies enterica serovar Choleraesuis (S. Choleraesuis) is a nontyphoidal Salmonella pathogen that causes swine paratyphoids. S.

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We characterized serotype 24F sequence type (ST) 162 isolated from Japanese children with invasive pneumococcal disease (IPD). Owing to its highly invasive nature, serotype 24F is expected to be isolated from clinically significant cases. Serotype 24F ST162 isolates tested in the present study did not grow at 35°C in ambient air.

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