Multidrug-resistant Staphylococcus aureus nasal carriage among HIV-positive outpatients in Guangzhou, China: Prevalence, risk factors, phenotypic and molecular characteristics

2020 ◽  
Author(s):  
Suiping He ◽  
Jialing Lin ◽  
Linghua Li ◽  
Weiping Cai ◽  
Jiaping Ye ◽  
...  
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Nasal Carriage ◽  
Multidrug Resistant ◽  
Hiv Positive ◽  
Molecular Characteristics

scholarly journals Prevalence, risk factors, phenotypic and molecular characteristics for Staphylococcus aureus carriage in community-based drug users in Guangzhou, China

2020 ◽  
Author(s):  
Yingying Wang ◽  
Jialing Lin ◽  
Junli Zhou ◽  
Zhigang Han ◽  
Zhenjiang Yao
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Drug Users ◽  
Nasal Carriage ◽  
Multidrug Resistant ◽  
Cross Sectional Study ◽  
Molecular Characteristics ◽  
Community Based ◽  
Cross Sectional ◽  
Nasal Swabs

Abstract Background: Staphylococcus aureus ( S. aureus ), particularly methicillin-resistant Staphylococcus aureus (MRSA), remains the predominant cause of infections in drug users. This cross-sectional study aims to elucidate the prevalence, risk factors, phenotypic and molecular characteristics of S. aureus carriage among community-based drug users. Methods: All eligible drug users, with both injection and non-injection route of drug administration , were asked to complete questionnaires and collect nasal swabs by trained personal during the period between May and December 2017 in Guangzhou, China. Swabs were processed for identification of S. aureus . Antimicrobial susceptibility test and polymerase chain reaction assays were used to detect phenotypic and molecular characteristics for identified isolates. Univariate and multivariate logistic regression analyses were used to assess risk factors for S. aureus carriage. Results: Overall, 353 drug users were included in the study and the prevalence of S. aureus carriage was 15.01% (53/353). The prevalence of MRSA carriage was 6.80% (24/353). Cohabitation was a risk factor for S. aureus (adjusted OR=8.80, 95% CI: 1.89-40.99). The proportion of multidrug resistance was 54.72% for S. aureus isolates and most of these isolates were resistant to penicillin, erythromycin and clindamycin. Seventeen MRSA isolates were multidrug resistant. The results of clonal complexes (CCs) and sequence types (STs) for S. aureus were diverse. The three predominant types for CCs were CC5 (64.15%, 34/53), CC59 (11.32%, 6/53), and CC7 (7.55%, 4/53); and for STs were ST188 (20.75%, 11/53), ST5 (11.32%, 6/53), and ST59 (11.32%, 6/53). Conclusion: The prevalence of S. aureus nasal carriage was lower while the prevalence of MRSA carriage was moderate compared to previous studies. Phenotypic and molecular characteristics of S. aureus isolates, particularly MRSA isolates, revealed high proportions of antibiotic resistance, indicating the existence of cross-circulation, and implying high opportunity of virulence-related diseases. Decolonization and antibiotic stewardship might be implemented for drug users with MRSA carriage.

scholarly journals Prevalence, risk factors, phenotypic and molecular characteristics for Staphylococcus aureus carriage in community-based drug users in Guangzhou, China

2019 ◽  
Author(s):  
Yingying Wang ◽  
Jialing Lin ◽  
Junli Zhou ◽  
Zhigang Han ◽  
Zhenjiang Yao
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Drug Users ◽  
Nasal Carriage ◽  
Multidrug Resistant ◽  
Cross Sectional Study ◽  
Oral Drug ◽  
Molecular Characteristics ◽  
Community Based ◽  
Cross Sectional

Abstract Background: Staphylococcus aureus (S. aureus), particularly methicillin-resistant Staphylococcus aureus (MRSA), remains the predominant cause of infections in drug users. The cross-sectional study aims to elucidate the prevalence, risk factors, phenotypic and molecular characteristics of S. aureus carriage among community-based drug users.Methods: All eligible drug users, both intravenous and oral drug users, were asked to complete questionnaires and collect nasal swabs during the period between May and December 2017 in Guangzhou, China. Swabs were processed for identification of S. aureus. Antimicrobial susceptibility test and polymerase chain reaction assays were used to detect phenotypic and molecular characteristics for identified isolates. Univariate and multivariate logistic regression analyses were used to assess risk factors for S. aureus carriage.Results: Overall, 353 drug users were included in the study and the prevalence of S. aureus carriage was 15.01% (53/353). The prevalence of MRSA carriage was 6.80% (24/353). Cohabitation was a risk factor for S. aureus (adjusted OR=8.80, 95% CI: 1.89-40.99). The proportion of multidrug resistance was 54.72% for S. aureus isolates and most of these isolates were resistant to penicillin, erythromycin and clindamycin. Seventeen MRSA isolates were multidrug resistant. The results of clonal complexes (CCs) and sequence types (STs) for S. aureus were diverse. The three predominant types for CCs were CC5 (64.15%, 34/53), CC59 (11.32%, 6/53), and CC7 (7.55%, 4/53); and for STs were ST188 (20.75%, 11/53), ST5 (11.32%, 6/53), and ST59 (11.32%, 6/53). Conclusion: The prevalence of S. aureus nasal carriage was lower when the prevalence of MRSA carriage was moderate. Phenotypic and molecular characteristics of S. aureus isolates, particularly MRSA isolates, revealed serious antibiotic resistance, indicating the existence of cross-circulation, and implying high opportunity of virulence-related diseases. Decolonization might be considered for drug users with MRSA carriage.

scholarly journals Prevalence, risk factors, phenotypic and molecular characteristics for methicillin-resistant Staphylococcus aureus carriage in community-based drug users in Guangzhou, China

2019 ◽  
Author(s):  
Yingying Wang ◽  
Jialing Lin ◽  
Junli Zhou ◽  
Zhigang Han ◽  
Zhenjiang Yao
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Drug Users ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Nasal Carriage ◽  
Molecular Characteristics ◽  
Community Based ◽  
Cross Sectional ◽  
Methicillin Resistant ◽  
The Cross

Abstract Background: Staphylococcus aureus ( S. aureus ) and methicillin-resistant Staphylococcus aureus (MRSA) remained the predominant cause of infections in drug users. The cross-sectional study aimed to elucidate the prevalence, risk factors, phenotypic and molecular characteristics of S. aureus and MRSA carriage among community-based drug users. Methods: Eligible drug users were asked to complete questionnaires and collect nasal swabs during May and December 2017 in Guangzhou, China. Swabs were processed for identification of S. aureus and MRSA. Antimicrobial susceptibility test and polymerase chain reaction assays were used to detect phenotypic and molecular characteristics for identified isolates. Univariate and multivariate logistic regression analyses were used to assess risk factors for S. aureus and MRSA carriage. Results: Overall, the prevalence of S. aureus and MRSA carriage in 353 drug users were 15.01% and 6.79%, respectively. Cohabitation was a risk factor for S. aureus (adjusted OR=8.80, 95% CI: 1.89-40.99) and MRSA (adjusted OR=14.30, 95% CI: 2.67-76.46) carriage. The proportions of multidrug resistance were respectively 72.41% and 89.47% for S. aureus and MRSA isolates and were simultaneously resistant to penicillin, erythromycin and clindamycin. The results of clonal complexes and sequence types for S. aureus and MRSA isolates were diverse. The proportions of virulence genes were high for MRSA isolates. Conclusion: The prevalence of S. aureus nasal carriage was lower while the prevalence of MRSA nasal carriage was moderate. Phenotypic and molecular characteristics of MRSA isolates revealed serious antibiotic resistance, indicating the cross-circulation of MRSA isolates, and imply high opportunity of virulence-related diseases. Decolonization might be considered for drug users with MRSA carriage, especially for those with risk factors.

Staphylococcus aureus nasal colonization among Vietnamese adults: prevalence, risk factors and antibiotic susceptibility profile

MedPharmRes ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 21-31
Author(s):  
Nguyen Phan ◽  
Hien Pham ◽  
Thuc Nguyen ◽  
Hoai Nguyen
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Antibiotic Susceptibility ◽  
Nasal Carriage ◽  
Resistance Rate ◽  
High Rate ◽  
Weight History ◽  
Potential Risk Factors ◽  
History Of ◽  
Vietnamese Community

Staphylococcus aureus (S. aureus) has long been recognized as an important human pathogen causing many severe diseases. It is also a part of human normal flora with its ecological niche in the human anterior nares. This study focused on screening S. aureus nasal carriage in community and its relationship to human physiological and pathological factors which have not been studied in Vietnam previously. Two hundred and five volunteers in Ho Chi Minh City from 18 to 35 and over 59 years old both male and female participated in the study. Result showed that the prevalence of S. aureus nasal carriage in southern Vietnamese community was relatively low, only 11.2% (23/205), much lower than that in other international reports on human S. aureus. In addition, nasal carriage of the older age group (> 59 years old, 13.7%) was higher than that of younger age (18-35 years old, 10.4%). Other potential risk factors such as gender, career, height, weight, history of antibiotic usage, daily nasal wash, use of nasal medication sprays, acne problems, smoking and nasal problems showed no significant impact on S. aureus carriage. The obtained S. aureus nasal isolates were all sensitive to vancomycin. Lincomycin and tetracycline had low resistance rate with 4.3 % and 17.4 %, respectively. However, the isolates showed particularly high rate of multidrug resistance (54.2%) In summary, our data provided researchers an overview on S. aureus nasal carriage and antibiotic susceptibility profile of the community- isolated S. aureus in Vietnam. This would serve as valuable information on assessing risk of community-acquired S. aureus infections.

scholarly journals Staphylococcus aureus nasal carriage in the community: a survey from central Italy

2002 ◽  
Vol 129 (2) ◽  
pp. 417-420 ◽  
Author(s):  
G. ZANELLI ◽  
A. SANSONI ◽  
A. ZANCHI ◽  
S. CRESTI ◽  
S. POLLINI ◽  
...  
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Antibiotic Susceptibility ◽  
Central Italy ◽  
Rare Event ◽  
Nasal Carriage ◽  
High Rate ◽  
Methicillin Resistant ◽  
Antibiotic Susceptibility Patterns ◽  
Susceptibility Patterns

Recently, concern has increased regarding the spread of methicillin-resistant Staphylococcus aureus (MRSA) in the community. We studied 812 subjects from central Italy to establish the rates of nasal carriage of S. aureus, and antibiotic susceptibility patterns, in the community. The prevalence of S. aureus nasal carriage was 30.5%. Only one subject, with predisposing risk factors for acquisition, was identified as carrier of MRSA (prevalence of 0.12%). The presence of MRSA in the community of our area still appears to be a rare event. Among methicillin-susceptible S. aureus (MSSA) isolates, a surprisingly high rate (18%) of resistance to rifampin was observed.

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