{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T02:37:19Z","timestamp":1773283039990,"version":"3.50.1"},"reference-count":36,"publisher":"Wiley","license":[{"start":{"date-parts":[[2020,2,11]],"date-time":"2020-02-11T00:00:00Z","timestamp":1581379200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Department of Microbiology, Institute of Medicine, Maharajgunj, Kathmandu"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Canadian Journal of Infectious Diseases and Medical Microbiology"],"published-print":{"date-parts":[[2020,2,11]]},"abstract":"<jats:p><jats:italic>Background<\/jats:italic>. Extended-spectrum <jats:italic>\u03b2<\/jats:italic>-lactamase (ESBL)- and AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase-producing <jats:italic>Enterobacteriaceae<\/jats:italic> have recently emerged as a public threat in the treatment of nosocomial as well as community-acquired infections. Very little information is currently available about its existence in Nepal. We, therefore, aim to determine the prevalence of ESBL and AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase-producing <jats:italic>Enterobacteriaceae<\/jats:italic> and also to determine their drug resistance pattern. <jats:italic>Methods<\/jats:italic>. During a 6-month period (November 2014\u2013April 2015), a total of 190 stool specimens from 190 participants were obtained from different population. Of the total 260 fecal isolates, 152 from outpatient department (OPD) and 108 from healthy volunteer were collected. Stool specimens were cultured and enterobacterial isolates were subjected to antimicrobial susceptibility tests according to the standard microbiologic guidelines. ESBL was screened using ceftazidime (CAZ, 30\u2009<jats:italic>\u03bc<\/jats:italic>g) and cefotaxime (CTX, 30\u2009<jats:italic>\u03bc<\/jats:italic>g) disks and confirmed by double-disk synergy test. AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase enzyme production was detected by the aminophenylboronic acid inhibitor-based detection method. Antibiotic susceptibility test was performed for ESBL-positive isolates as per the Kirby-Bauer disk diffusion method, and interpretation was done according to CLSI (Clinical and Laboratory Standard Institute). <jats:italic>Results<\/jats:italic>. The prevalence of ESBL, AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamases, and coproducer (ESBL\u2009+\u2009AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase) producing <jats:italic>Enterobacteriaceae<\/jats:italic> in OPD participants were 30.92%, 18.4%, and 13.81%, respectively, while 25%, 6.4%, and 1.8% in healthy population. ESBL-producing <jats:italic>E. coli<\/jats:italic> was 70.2% followed by <jats:italic>K. pneumoniae<\/jats:italic> (12.7%), and among AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase producer, <jats:italic>E. coli<\/jats:italic> were detected in half of the isolates (14\/28, 50.0%) among OPD patients. Similarly, <jats:italic>E. coli<\/jats:italic> remained the most frequent ESBL producers 21\/27 (77.8%) followed by <jats:italic>K. pneumoniae<\/jats:italic> 4\/27 (14.21%) in healthy participants, and <jats:italic>K. pneumoniae<\/jats:italic> 5\/7 (71.42%) and <jats:italic>C. freundii<\/jats:italic> 2\/7 (28.57%) were detected highest among AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase-producing isolates. All isolates were highly sensitive (100%) to imipenem in both OPD and healthy participants. <jats:italic>Conclusion<\/jats:italic>. Our study revealed a high prevalence of ESBL- and AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase-producing enteric pathogen in Nepalese OPD and healthy population. The significant increase of these isolates and increased rate of drug resistance indicates a serious threat that stress the need to implement the surveillance system and a proper control measure so as to limit the spread of ESBL-producing <jats:italic>Enterobacteriaceae<\/jats:italic> (ESBL-PE) in both OPD as well as in community. Therefore, healthcare providers need to be aware that ESBL- and AmpC-<jats:italic>\u03b2<\/jats:italic>-lactamase-producing strains are not only circulating in hospital environments but also in the community and should be dealt with accordingly.<\/jats:p>","DOI":"10.1155\/2020\/5154217","type":"journal-article","created":{"date-parts":[[2020,2,11]],"date-time":"2020-02-11T18:31:19Z","timestamp":1581445879000},"page":"1-9","source":"Crossref","is-referenced-by-count":14,"title":["Carriage of Extended-Spectrum-<i>\u03b2<\/i>-Lactamase- and AmpC-<i>\u03b2<\/i>-Lactamase-Producing <i>Enterobacteriaceae<\/i> (ESBL-PE) in Healthy Community and Outpatient Department (OPD) Patients in Nepal"],"prefix":"10.1155","volume":"2020","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1369-2451","authenticated-orcid":true,"given":"Dipendra Kumar","family":"Mandal","sequence":"first","affiliation":[{"name":"Department of Laboratory Medicine, Manmohan Memorial Institute of Health Sciences, Kathmandu, Nepal"},{"name":"Sukraraj Tropical and Infectious Diseases Hospital, Teku, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8284-5925","authenticated-orcid":true,"given":"Shiv Kumar","family":"Sah","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Science, Purbanchal University, Little Buddha College of Health Science, Minbhawan, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shyam Kumar","family":"Mishra","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sangita","family":"Sharma","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hari Prasad","family":"Kattel","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9008-6140","authenticated-orcid":true,"given":"Sanjeet","family":"Pandit","sequence":"additional","affiliation":[{"name":"National Public Health Laboratory, HIV Reference Unit, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pranav Kumar","family":"Yadav","sequence":"additional","affiliation":[{"name":"Department of Laboratory Medicine, Udaypur District Hospital, Udaypur, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9816-4489","authenticated-orcid":true,"given":"Ujjwal","family":"Laghu","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Grande International Hospital, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rajani","family":"Lama","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Niranjan Prasad","family":"Sah","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeevan Bahadur","family":"Sherchand","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keshav","family":"Parajuli","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, 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