ESBL prevalence over time, including bacterial species and ESBL genes.

& = Number of ESBL positive patients divided by the number of evaluable cultures (patients)# = Primary = patients with a unique isolates and index patients$ = Secondary = patients with ESBL isolates caused by nosocomial transmissionESBL prevalence over time, including bacterial species and ESBL genes.

1. &：超广谱β-内酰胺酶（Extended-Spectrum Beta-Lactamases，ESBL）阳性患者数与可评估培养（患者）数的比值；2. #：首发组，即携带唯一分离菌株的患者及索引病例；3. $：继发病例组，即因医院内传播感染ESBL阳性菌株的患者；本数据集涵盖随时间变化的ESBL流行率情况，同时包含细菌菌种与ESBL基因型相关信息。