Assessment of mumps virus-specific antibodies: Comparison of three different enzyme immunoassays and neutralization test.

Introduction: We evaluated the application of a newly improved enzyme immunoassay (EIA) kit, Mumps IgG Seiken®, by comparing antibody responses to different EIA kits, and neutralization tests (NTs), using clinical samples.

Methods: Serum samples were collected before and 4-6 weeks after vaccination from 128 children who had no history of mumps or mumps vaccination. Using three different EIA kits, Mumps IgG Seiken®, a commercial kit from Enzygnost®, and an in-house kit, mumps-specific IgG antibodies were measured.

Temporal patterns of asymptomatic SARS-CoV-2 infection among pediatric population in Japan: A 3-year analysis.

To elucidate the seroprevalence and rate of asymptomatic infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Japanese children, serological analysis was performed using serum samples collected from March 2020 to February 2023. A total of 1493 serum samples were collected during the first study period (March 2020 to February 2021). None of the serum samples was positive for SARS-CoV-2 antibody.

Vessel development in compound buds of interspecific hybrid grape induced by artificial deacclimation treatments.

Grape compound buds adapt to subfreezing temperatures in winter by supercooling, but the supercooling ability is thought to be lost upon formation of xylem connections between canes and buds. It was reported that compound buds of the Vitis vinifera variety 'Chardonnay' lack xylem cells in mid-winter, and that vessels differentiate during deacclimation. However, the pattern of vessel formation in compound buds may differ in cold-hardy Vitis species and interspecific hybrid varieties grown in colder regions.

Bordetella pertussis is a common pathogen in infants hospitalized for acute lower respiratory tract infection during the winter season.

Introduction: There is some evidence that Bordetella pertussis (B. pertussis) can co-infect with viral respiratory infections in young infants.

Methods: B.

Effectiveness of four doses of pertussis vaccine during infancy diminished in elementary school age: A test-negative case-control study in Japan.

Objective: The Japanese national immunization program recommends that children receive 4 doses of acellular pertussis vaccine between 3 months and 2 years of age. Nevertheless, the number of pertussis cases is increasing in elementary school children aged 6-12 years. Therefore, a test-negative case-control study was conducted to assess the effectiveness of the pertussis vaccine program.

Unexpected Ventriculitis Complication of Neonatal Meningitis Caused by Streptococcus gallolyticus Subsp. pasteurianus: a Case Report.

Streptococcus gallolyticus subsp. pasteurianus, previously recognized as S. bovis biotype II/2, is an uncommon yet important cause of invasive infection in young infants.

Umbilical hernia: Influence of adhesive strapping on outcome.

Background: Adhesive strapping for umbilical hernia has been re-evaluated as a promising treatment. We evaluated the influence of adhesive strapping on the outcome of umbilical hernia.

Methods: We retrospectively evaluated patients with umbilical hernia referred to the present institution from April 2011 to December 2015.