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The triple therapy containing tetracycline for 14\u2005days followed by 4\u2005months treatment with omeprazole resulted in the resolution of the gastroduodenal pathology. The question, therefore, was raised regarding a possible role for the cultured coccoid bacteria in the pathogenesis. 16S rRNA gene sequence analysis of the isolated Gram-negative coccoid bacteria revealed a close relationship with<jats:italic>Haemophilus haemolyticus<\/jats:italic>. The unidentified coccoid microorganisms and cultured X and V factors independent coccoid bacteria, however, shared similar phenotypic, microbiological and pathological characteristics to the novel Gram-negative<jats:italic>Streptococcaceae<\/jats:italic>:<jats:italic>Okadaella gastrococcus<\/jats:italic>.<\/jats:p>","DOI":"10.1136\/bcr-2013-202418","type":"journal-article","created":{"date-parts":[[2014,2,4]],"date-time":"2014-02-04T11:25:11Z","timestamp":1391513111000},"page":"bcr2013202418","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Unidentified intralesional and intracellular coccoid microorganism discovered in the young man with a diffuse erosive gastroduodenitis and multiple superficial ulcerations"],"prefix":"10.1136","volume":"2014","author":[{"given":"Takayuki","family":"Okada","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Graham","family":"Adkins","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2014,2,4]]},"reference":[{"key":"2025042702320794000_2014.feb04_1.bcr2013202418.1","unstructured":"O'Rourke J Lee A Kellow JE . 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