High prevalence of extended-spectrum beta-lactamase-producing and isolates: A 5-year retrospective study at a Tertiary Hospital in Northern Thailand.

Background: The global emergence and spread of extended-spectrum beta-lactamase (ESBL)-producing , especially and , have been recognized as a public health concern as severe infections caused by these microorganisms increase morbidity and mortality. This study aimed to assess the prevalence of ESBL-positive and strains isolated from hospitalized patients in Chiangrai Prachanukroh hospital, Chiangrai province, Thailand.

Methods: This retrospective analysis was conducted from January 2016 to December 2020.