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Objective <p>To assess the prevalence of <i>Staphylococcus aureus</i> and antimicrobial resistance patterns, with particular emphasis on methicillin resistance, among isolates from street-vended tomato sauces in Dhaka, Bangladesh.</p> Results <p>Among 104 street-vended tomato sauce samples, 83 (79.8%; 95% Cl: 71.1–86.4%) were <i>S. aureus</i> isolates confirmed. Of these, 38 (45.8%) identified as methicillin-resistant <i>Staphylococcus aureus</i>, 5 (6.0%) vancomycin-resistant <i>S. aureus</i>, 55 (66.3%) multidrug resistance, and 2 (2.4%) extensively drug-resistant. The multiple antibiotic resistance (MAR) index ranged from 0.08 to 0.75 (mean ± SD = 0.38 ± 0.12), with 60 (72.3%) isolates exceeding the high-risk threshold (≥ 0.2). Methicillin-Resistant isolates showed significantly higher index values than susceptible isolates (<i>p</i> = 0.003). Co-resistance observed between oxacillin-cefoxitin (φ = 1.00) and meropenem-amikacin (φ = 0.96). Elevated resistance index values were more frequently observed among isolates from slum and transport-hub areas.</p>

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Prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in street-vended tomato sauces in Dhaka, Bangladesh

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月9日

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  • Mizbahul Karim Hemo,
  • Md. Aminul Islam,
  • Suvamoy Datta

摘要

Objective

To assess the prevalence of Staphylococcus aureus and antimicrobial resistance patterns, with particular emphasis on methicillin resistance, among isolates from street-vended tomato sauces in Dhaka, Bangladesh.

Results

Among 104 street-vended tomato sauce samples, 83 (79.8%; 95% Cl: 71.1–86.4%) were S. aureus isolates confirmed. Of these, 38 (45.8%) identified as methicillin-resistant Staphylococcus aureus, 5 (6.0%) vancomycin-resistant S. aureus, 55 (66.3%) multidrug resistance, and 2 (2.4%) extensively drug-resistant. The multiple antibiotic resistance (MAR) index ranged from 0.08 to 0.75 (mean ± SD = 0.38 ± 0.12), with 60 (72.3%) isolates exceeding the high-risk threshold (≥ 0.2). Methicillin-Resistant isolates showed significantly higher index values than susceptible isolates (p = 0.003). Co-resistance observed between oxacillin-cefoxitin (φ = 1.00) and meropenem-amikacin (φ = 0.96). Elevated resistance index values were more frequently observed among isolates from slum and transport-hub areas.