 This study found that e. coli strains isolated from various clinical samples had different resistance patterns depending on the patient's age group and sample source. Year-end arrived e. coli strains from young adults were more likely to be resistant to certain antibiotics than other age groups or sample types. Additionally, elderly patients had higher resistance rates to some antibiotics when compared to younger patients. This article was authored by Sheng Jiao, Shan Shan Jin, Zi Pei Wang, and others.