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Prevalence of serotypes,antibiotic resistance and virulence genes of Group B Streptococcus isolated from pregnant women at 35-37 weeks of gestation in Ho Chi Minh City,Vietnam 认领 引用
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作者 Truc-Anh Nguyen-Thi Hong-Phuc Nguyen +3 位作者 Thien-An Do-Hoang Minh-Hoang Tran Tuan-Loc Le Hieu Vu-Quang 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2026年第1期16-24,共9页
Objective:To analyse the prevalence of serotypes,antibiotic resistance,and virulence genes of Group B Streptococcus(GBS)strains isolated from pregnant women at 35-37 weeks of gestation in Ho Chi Minh City,Vietnam,from... Objective:To analyse the prevalence of serotypes,antibiotic resistance,and virulence genes of Group B Streptococcus(GBS)strains isolated from pregnant women at 35-37 weeks of gestation in Ho Chi Minh City,Vietnam,from January 2022 to January 2023.Methods:GBS strains were isolated through selective culture methods and confirmed by PCR.Serotyping,virulence gene detection,and antibiotic susceptibility testing were performed using PCR,gel electrophoresis techniques and Kirby-Bauer test.Results:Totally,61 GBS isolated from 300 participants have been identified including seven GBS serotypes(Ⅰa,Ⅰb,Ⅱ,Ⅲ,Ⅳ,Ⅴ,andⅥ).SerotypesⅦ,Ⅷ,andⅨwere not detected in the study population.Antibiotic resistance patterns varied:13.1%of isolates were fully susceptible,while the majority showed multi-drug resistance,with 34.4%resistant to three antibiotics.SerotypeⅠa demonstrated high susceptibility(35.7%),while serotypeⅢshowed extensive resistance,with 87.5%being resistant to at least three antibiotics.All strains are susceptible to vancomycin andβ-lactams susceptibility also remained high,but resistance to clindamycin,erythromycin,and tetracycline was high(>65%).The virulence genes scpB,cylB,fbsB,and cfb were highly prevalent(90%-100%),indicating their potential for vaccine and diagnostic development.Conclusions:Our findings provide valuable insights into GBS serotypes,resistance,and virulence factors,contributing to community monitoring,preventive measures,diagnostics,and vaccine development.However,the limited sample size necessitates further research. 展开更多
关键词 Group B Streptococcus Serotype Antibiotic resistance Virulence Pregnancy
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Prevalence,virulence genes,antimicrobial susceptibility,and genetic diversity of Staphylococcus aureus from young people from 18 to 25-year-old age in Ho Chi Minh City,Vietnam 认领 引用
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作者 Hong-Phuc Nguyen Truc-Anh Nguyen-Thi +2 位作者 Tuan-Loc Le Trang Nguyen Thi Xuan Hieu Vu-Quang 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2026年第4期181-188,共8页
Objective:To investigate the prevalence,antimicrobial resistance and genetic diversity of Staphylococcus(S.)aureus among healthy young adults of 18 to 25 years in Ho Chi Minh City,Vietnam.Methods:A cross-sectional,des... Objective:To investigate the prevalence,antimicrobial resistance and genetic diversity of Staphylococcus(S.)aureus among healthy young adults of 18 to 25 years in Ho Chi Minh City,Vietnam.Methods:A cross-sectional,descriptive study was conducted between December 2023 and December 2024.Nasal swabs were processed for S.aureus isolation,antibiotic susceptibility testing,and PCR-based detection of spa,pvl,and mecA genes.Genetic similarity was assessed using the unweighted pair group method with arithmetic mean cluster analysis.Statistical significance was determined by Chi-square test.Results:In this cross-sectional study of 428 students,the S.aureus carriage rate was 33.9%.Methicillin-resistant S.aureus(MRSA)prevalence was 54.5%(79/145).10%-17%of MRSA isolates exhibited resistance to three to ten antibiotics,with two strains demonstrating resistance to 11 and 12 drugs,respectively.The pvl gene was detected in 5.8%of isolates.55.17%S.aureus strains belonged to ten distinct spa types with 300-bp amplicons.Conclusions:These findings provide valuable insights into S.aureus carriage patterns among youth in Ho Chi Minh City,informing public health strategies for prevention and treatment. 展开更多
关键词 Staphylococcus aureus Antibiotic resistance mecA spa pvl
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