AI Article Synopsis

  • Streptococcus agalactiae, also known as Group B Streptococcus (GBS), is primarily known for causing infections in newborns but can also lead to serious diseases in non-pregnant adults, particularly in Southeast Asia.
  • A study sequenced 12 samples of the GBS ST283 genotype from adult patients in Thailand and combined this data with existing sequences to analyze the bacteria's population dynamics and transmission history.
  • The research identified potential drug resistance genes and validated their resistance phenotypes through experiments, providing insights into the historical spread of GBS ST283 in the region.

Article Abstract

Streptococcus agalactiae, also known as Lancefield Group B Streptococcus (GBS), is typically regarded as a neonatal pathogen; however, several studies have shown that the bacteria are capable of causing invasive diseases in non-pregnant adults as well. The majority of documented cases were from Southeast Asian countries, and the most common genotype found was ST283, which is also known to be able to infect fish. This study sequenced 12 GBS ST283 samples collected from adult patients in Thailand. Together with publicly available sequences, we performed temporo-spatial analysis and estimated population dynamics of the bacteria. Putative drug resistance genes were also identified and characterized, and the drug resistance phenotypes were validated experimentally. The results, together with historical records, draw a detailed picture of the past transmission history of GBS ST283 in Southeast Asia.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8907273PMC
http://dx.doi.org/10.1038/s41598-022-08097-0DOI Listing

Publication Analysis

Top Keywords

streptococcus agalactiae
8
st283 southeast
8
southeast asia
8
gbs st283
8
drug resistance
8
genomic epidemiology
4
epidemiology streptococcus
4
st283
4
agalactiae st283
4
asia streptococcus
4

Similar Publications

This review summarizes key virulence factors associated with group B (GBS), a significant pathogen particularly affecting pregnant women, fetuses, and infants. Beginning with an introduction to the historical transition of GBS from a zoonotic pathogen to a prominent cause of human infections, particularly in the perinatal period, the review describes major disease manifestations caused by GBS, including sepsis, meningitis, chorioamnionitis, pneumonia, and others, linking each to specific virulence mechanisms. A detailed exploration of the genetic basis for GBS pathogenicity follows, emphasizing the roles of capsules in pathogenesis and immune evasion.

View Article and Find Full Text PDF

Maternal and neonatal outcomes of Group B Streptococcus colonization: a retrospective study.

BMC Infect Dis

January 2025

Department of Obstetrics and Gynecology, Taixing People's Hospital, No.1, Changzheng Road, Taixing, Jiangsu, 225400, China.

Background: Group B Streptococcus (GBS) colonization is one of the major causes of severe neonatal infections. The study was intended to identify GBS colonization in pregnant women, explore its potential risk factors, and analyze the impact of GBS on outcomes for both mothers and newborns.

Material And Methods: A retrospective research was carried out on pregnant women who had undergone GBS screening and delivered from June 2020 to December 2022.

View Article and Find Full Text PDF

Early onset neonatal bloodstream infections in South African hospitals.

BMC Infect Dis

January 2025

Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000, South Africa.

Background: Neonatal sepsis is a leading cause of death in low- and middle- income countries (LMIC). Increasing antibiotic resistance in early onset (< 72 h of life) bloodstream infection (EO-BSI) pathogens in LMIC has reduced the effectiveness of the recommended empiric antibiotic regimen (ampicillin plus gentamicin).

Methods: We retrospectively analysed blood culture-confirmed EO-BSI episodes at nine neonatal units from three central and six peripheral hospitals in the Western Cape Province, South Africa between 1 January 2017 and 31 December 2018.

View Article and Find Full Text PDF

Background: Group B Streptococcus (GBS) is the most common cause of neonatal early onset sepsis in term infants and a major cause of late onset sepsis in both term and preterm infants.

Aim: To estimate the incidence of GBSS among neonates born in Qatar between July 2015 and June 2020 (5 years). A secondary aim was to describe the outcomes of the affected babies.

View Article and Find Full Text PDF

Background: Aerobic vaginitis (AV) is a state of abnormal vaginal microbiota, which is associated with increased numbers of aerobic, enteric bacteria and inflammation of the vaginal epithelium. Anti-microbial treatment combined with anti-inflammatory therapy could be useful in the treatment of this condition. It is known that calcitriol, the active form of vitamin D, plays an important role in modulating the immune response in several inflammatory diseases.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!