Mattos-Graner R O, Li Y, Caufield P W, Duncan M, Smith D J
Departments of Immunology, The Forsyth Institute, 140 The Fenway, Boston, MA 02115, USA.
J Clin Microbiol. 2001 Jun;39(6):2313-6. doi: 10.1128/JCM.39.6.2313-2316.2001.
Streptococcus mutans strains were isolated from cohorts of Brazilian nursery school children and genotyped by arbitrarily primed PCR and restriction fragment length polymorphism analysis. Of 24 children with two to five S. mutans isolates, 29% carried two or more genotypes. The presence of matching genotypes of S. mutans among children attending one nursery suggests horizontal transmission.
变形链球菌菌株从巴西幼儿园儿童群体中分离出来,并通过任意引物PCR和限制性片段长度多态性分析进行基因分型。在24名有2至5株变形链球菌分离株的儿童中,29%携带两种或更多种基因型。在一所幼儿园就读的儿童中存在匹配的变形链球菌基因型,这表明存在水平传播。