E. coli is gram-negative, facultatively anaerobic, bacilli. It is a member of Enterobacteriaceae and normal flora in the human intestine. It most commonly causes urinary tract infections, diarrhea, or intra-abdominal infections. It may cause pneumonia and neonatal meningitis. Some virulent strains have results in outbreaks in healthy populations; severe complication and even death have been reported. E. coli causes health-care associated infections. Those with ESBL are multidrug resistant. Recently, emergence of carbapenem-resistant E. coli poses great threat to healthcare system.

TSAR Publications:
1. Lee YL, Liu CE, Wang WY, Tan MC, Chen PJ, Shiau YR, Wang HY, Lai JF, Huang IW, Yang YS, Kuo SC. Antimicrobial resistance among imipenem-non-susceptible Escherichia coli and Klebsiella pneumoniae isolates, with an emphasis on novel β-lactam/β-lactamase inhibitor combinations and tetracycline derivatives: The Taiwan surveillance of antimicrobial resistance program, 2020-2022. J Microbiol Immunol Infect. 2025 Apr;58(2):219-225. doi: 10.1016/j.jmii.2025.01.006. Epub 2025 Feb 6. PMID: 39934015.

2. Lin JC, Kristopher Siu LK, Chang FY, Wang CH. Mutations in the pmrB gene constitute the major mechanism underlying chromosomally encoded colistin resistance in clinical Escherichia coli. J Glob Antimicrob Resist. 2024 Sep;38:275-280. doi: 10.1016/j.jgar.2024.06.013. Epub 2024 Jul 10. PMID: 38996871.

3. Wang JT, Chang SC, Chang FY, Fung CP, Chuang YC, Chen YS, Shiau YR, Tan MC, Wang HY, Lai JF, Huang IW, Yang Lauderdale TL. Antimicrobial Non-Susceptibility of Escherichia coli from Outpatients and Patients Visiting Emergency Rooms in Taiwan. PLoS One. 2015 Dec 3;10(12):e0144103. doi: 10.1371/journal.pone.0144103. PMID: 26632819; PMCID: PMC4669119.