Goolam Mahomed A, Feldman C, Smith C, Promnitz D A, Kaka S
Department of Medicine, Hillbrow Hospital, Johannesburg.
S Afr Med J. 1992 Dec;82(6):432-4.
In 4 adult black patients admitted to an urban general hospital with community-acquired pneumonia, Streptococcus viridans alone was isolated from blood culture (first subculture), in the absence of any other positive microbiological finding. Sputum examination by Gram staining and culture in 3 cases was reported as negative. Echocardiography was performed in 3 cases and was normal, without evidence of endocarditis. The clinical course of illness in the 4 patients is described. The chest radiograph showed a segmental or subsegmental consolidation in all cases; this appeared 'mass-like' in 2 patients. Viridans streptococci may be a more important, if still uncommon, cause of community-acquired pneumonia than previously suspected. The organism should be considered as a possible cause of chest infection, particularly in patients with appropriately positive blood cultures and no other positive microbiological finding.
在一家城市综合医院收治的4例成年黑人社区获得性肺炎患者中，血培养（首次传代培养）仅分离出草绿色链球菌，无任何其他阳性微生物学检查结果。3例患者痰涂片革兰氏染色及培养报告为阴性。3例患者行超声心动图检查，结果正常，无感染性心内膜炎证据。描述了这4例患者的临床病程。所有病例胸部X线片均显示节段性或亚节段性实变；2例患者表现为“肿块样”。草绿色链球菌可能是社区获得性肺炎的一个比以往怀疑的更为重要的病因，尽管仍然不常见。该病原体应被视为胸部感染的可能病因，特别是在血培养结果适当阳性且无其他阳性微生物学检查结果的患者中。
