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Antimicrobial Susceptibility and Genomic Profiles of Multidrug-Resistant Staphylococcus aureus from Nasopharynx of Asymptomatic Children in Dhaka, Bangladesh.


ABSTRACT: Children carrying Staphylococcus aureus in their nasopharynx are at a higher risk of contracting systemic infection. Due to lack of sufficient information regarding such carriage, this study was conducted to explore the prevalence, antibiotic susceptibility, and genomic profiles of S. aureus isolated from nasopharyngeal samples of 163 randomly selected asymptomatic Bangladeshi children aged from 5-<15 years. Antibiotic susceptibility pattern and genomic analysis of the samples were conducted using standard microbiological methods and genomic tools. The carriage was confirmed in 44 (27%) children who were mostly well nourished without respiratory symptoms in the last 3 months. Higher carriage was observed among the younger age group (5-<10 years) who completed vaccines for pneumonia (p = 0.002) and influenza (p = 0.004). Among the isolates, 84.1% were multidrug-resistant and 47.5% (n = 40) were methicillin-resistant S. aureus (MRSA). All the isolates (100%) were resistant to cefixime with higher resistance to ampicillin (95.5%) and penicillin (90.9%). Among the three investigated isolates, two were ST80 (ID-1 and ID-52) and one was a novel strain (ID-19) with the presence of aph-Stph, blaI, blaZ, dha1, fosB, lmrS, mepA, norA, and tet38 genes. The current research demonstrates a high incidence of multidrug-resistant S. aureus and reports the first instance of ST80 in asymptomatic children in Bangladesh.

SUBMITTER: Islam S 

PROVIDER: S-EPMC11355696 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature

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Antimicrobial Susceptibility and Genomic Profiles of Multidrug-Resistant <i>Staphylococcus aureus</i> from Nasopharynx of Asymptomatic Children in Dhaka, Bangladesh.

Islam Sufia S   Nasrin Nishat N   Tithi Nigar Sultana NS   Khatun Farjana F   Asaduzzaman Muhammad M   Topa Anika Fatema AF   Kabir Md Farhad MF   Haque Fahim Kabir Monjurul FKM   Jubair Mohammad M   Rahman Mustafizur M   Lehmann Christian C  

Life (Basel, Switzerland) 20240802 8


Children carrying <i>Staphylococcus aureus</i> in their nasopharynx are at a higher risk of contracting systemic infection. Due to lack of sufficient information regarding such carriage, this study was conducted to explore the prevalence, antibiotic susceptibility, and genomic profiles of <i>S. aureus</i> isolated from nasopharyngeal samples of 163 randomly selected asymptomatic Bangladeshi children aged from 5-<15 years. Antibiotic susceptibility pattern and genomic analysis of the samples were  ...[more]

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