{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T06:47:50Z","timestamp":1792738070186,"version":"4.5.0"},"reference-count":68,"publisher":"American Society for Microbiology","issue":"4","license":[{"start":{"date-parts":[[2002,4,1]],"date-time":"2002-04-01T00:00:00Z","timestamp":1017619200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["J Clin Microbiol"],"published-print":{"date-parts":[[2002,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Legionnaires' disease is a potentially lethal pneumonia that is primarily due to infection by the species\n                    <jats:italic>Legionella<\/jats:italic>\n                    <jats:italic>pneumophila<\/jats:italic>\n                    , although more than 40 other species are known. Certain\n                    <jats:italic>L<\/jats:italic>\n                    .\n                    <jats:italic>pneumophila<\/jats:italic>\n                    subgroups, particularly serogroup 1, are associated with the majority of the epidemics. The genetic bases for these differences in virulence have not been determined. Three strains, AA100, JR32, and Lp01, have been used in many molecular pathogenesis studies of\n                    <jats:italic>L<\/jats:italic>\n                    .\n                    <jats:italic>pneumophila<\/jats:italic>\n                    . We found genetic differences between these strains by PCR and Southern analyses that may be related to their ability to cause disease. We also examined the distribution of these genetic loci in clinical and environmental isolates of\n                    <jats:italic>Legionella<\/jats:italic>\n                    and found a correlation between the presence of two of these loci,\n                    <jats:italic>rtxA<\/jats:italic>\n                    and\n                    <jats:italic>lvh<\/jats:italic>\n                    , and the ability to cause disease in humans. Examination of the interactions of these strains with host cells suggested that they differ in important phenotypic characteristics including adherence, entry, and intracellular replication. Furthermore, in the mouse model of infection they display differing levels of replication in lungs. These studies emphasize the importance of further investigation into the genetic makeup of these strains, which is likely to lead to the identification of additional factors involved in\n                    <jats:italic>Legionella<\/jats:italic>\n                    pathogenesis.\n                  <\/jats:p>","DOI":"10.1128\/jcm.40.4.1352-1362.2002","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T05:59:40Z","timestamp":1027749580000},"page":"1352-1362","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":70,"title":["Genetic and Phenotypic Differences between\n                    <i>Legionella pneumophila<\/i>\n                    Strains"],"prefix":"10.1128","volume":"40","author":[{"given":"Mustapha M.","family":"Samrakandi","sequence":"first","affiliation":[{"name":"Department of Veterinary and Biomedical Sciences, University of Nebraska, Lincoln, Lincoln, Nebraska 68583"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suat L. G.","family":"Cirillo","sequence":"additional","affiliation":[{"name":"Department of Veterinary and Biomedical Sciences, University of Nebraska, Lincoln, Lincoln, Nebraska 68583"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dennis A.","family":"Ridenour","sequence":"additional","affiliation":[{"name":"Department of Veterinary and Biomedical Sciences, University of Nebraska, Lincoln, Lincoln, Nebraska 68583"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luiz E.","family":"Bermudez","sequence":"additional","affiliation":[{"name":"Kuzell Institute for Arthritis and Infectious Diseases, California Pacific Medical Center, San Francisco, California 94115"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffrey D.","family":"Cirillo","sequence":"additional","affiliation":[{"name":"Department of Veterinary and Biomedical Sciences, University of Nebraska, Lincoln, Lincoln, Nebraska 68583"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1093\/nar\/25.17.3389"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.68.9.5056-5061.2000"},{"key":"e_1_3_2_4_2","first-page":"90","volume":"13","year":"1998","unstructured":"Benson, R. 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