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Trends and correlations in antimicrobial resistance indicators in 110 hospitals in Thailand, 2022-2024
Pitsaphun Werayingyong1, Panida Chamawan1, Krittiya Tuamsuwan1
1Health Administration Division, The office of Permanent Secretary, Ministry of Public Health, Nonthaburi, Thailand.
Objective:
To evaluate trends and correlations in antimicrobial resistance (AMR) indicators METHODS: We conducted a cross-sectional study analyzing summary AMR data from 110 public hospitals in Thailand in 2022 and 2024.
Results:
In 2022 and 2024, the total number of hospital admissions were 3,856,503 and 3,901,396, respectively. The total number of patients with hospital-acquired carbapenem-resistant Acinetobacter baumannii (CRAB) bloodstream infection (BSI) decreased from 4925 in 2022 to 4375 in 2024, corresponding to a 12% decline in AMR frequency per 100,000 admissions (adjusted rate ratio 0.88; 95% confidence interval 0.84-0.91; P <0.001). However, changes in AMR frequency and AMR proportion were weakly correlated (Spearman's rho = 0.27). Declines in the total number of patients (from 1630 to 1281) and AMR frequencies were also observed for hospital-acquired BSI due to carbapenem-resistant Klebsiella pneumoniae (CRKP) (all P <0.001). Nonetheless, the total number of patients with hospital-acquired BSI due to carbapenem-resistant Escherichia coli was 298 in 2022 and 336 in 2024, and increases in some but not all AMR frequencies were observed. No significant changes were observed in most AMR indicators for methicillin-resistant Staphylococcus aureus.
Conclusions:
At the national level, the burden of hospital-acquired BSI due to CRAB and CRKP declined in Thailand during the study period. However, at the hospital level, changes in AMR indicators could be discordant. We emphasize the need for cautious interpretation of changes in multiple AMR indicators, including their underlying numerators and denominators, when assessing AMR burden at the hospital and national levels.
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