{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T16:08:45Z","timestamp":1791216525702,"version":"4.1.0"},"reference-count":42,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T00:00:00Z","timestamp":1722902400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Cell. Infect. Microbiol."],"abstract":"Background<\/jats:title>Metagenomic next-generation sequencing (mNGS) technology has been widely used to diagnose various infections. Based on the most common pathogen profiles, targeted mNGS (tNGS) using multiplex PCR has been developed to detect pathogens with predesigned primers in the panel, significantly improving sensitivity and reducing economic burden on patients. However, there are few studies on summarizing pathogen profiles of pulmonary infections in immunocompetent and immunocompromised patients in Jilin Province of China on large scale.<\/jats:p><\/jats:sec>Methods<\/jats:title>From January 2021 to December 2023, bronchoalveolar lavage fluid (BALF) or sputum samples from 546 immunocompetent and immunocompromised patients with suspected community-acquired pneumonia were collected. Pathogen profiles in those patients on whom mNGS was performed were summarized. Additionally, we also evaluated the performance of tNGS in diagnosing pulmonary infections.<\/jats:p><\/jats:sec>Results<\/jats:title>Combined with results of mNGS and culture, we found that the most common bacterial pathogens were Pseudomonas aeruginosa<\/jats:italic>, Klebsiella pneumoniae<\/jats:italic>, and Acinetobacter baumannii<\/jats:italic> in both immunocompromised and immunocompetent patients with high detection rates of Staphylococcus aureus<\/jats:italic> and Enterococcus faecium<\/jats:italic>, respectively. For fungal pathogens, Pneumocystis jirovecii<\/jats:italic> was commonly detected in patients, while fungal infections in immunocompetent patients were mainly caused by Candida albicans<\/jats:italic>. Most of viral infections in patients were caused by Human betaherpesvirus 5 and Human gammaherpesvirus 4. It is worth noting that, compared with immunocompetent patients (34.9%, 76\/218), more mixed infections were found in immunocompromised patients (37.8%, 14\/37). Additionally, taking final comprehensive clinical diagnoses as reference standard, total coincidence rate of BALF tNGS (81.4%, 48\/59) was much higher than that of BALF mNGS (40.0%, 112\/280).<\/jats:p><\/jats:sec>Conclusions<\/jats:title>Our findings supplemented and classified the pathogen profiles of pulmonary infections in immunocompetent and immunocompromised patients in Jilin Province of China. Most importantly, our findings can accelerate the development and design of tNGS specifically used for regional pulmonary infections.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fcimb.2024.1439472","type":"journal-article","created":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T06:07:01Z","timestamp":1722924421000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":40,"title":["Application of metagenomic next-generation sequencing and targeted metagenomic next-generation sequencing in diagnosing pulmonary infections in immunocompetent and immunocompromised patients"],"prefix":"10.3389","volume":"14","author":[{"given":"Yong","family":"Liu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wencai","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yunping","family":"Xiao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongyan","family":"Zou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sijia","family":"Hao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanfang","family":"Jiang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2024,8,6]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"173","DOI":"10.1016\/S2213-2600(18)30345-X","article-title":"Acute respiratory failure in immunocompromised adults","volume":"7","author":"Azoulay","year":"2019","journal-title":"Lancet Respir. 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