Davey A L, Rogers A H
Arch Oral Biol. 1984;29(6):453-60. doi: 10.1016/0003-9969(84)90026-8.
To identify the source of infection with the potentially cariogenic Streptococcus mutans, unstimulated saliva and two approximal plaque samples were examined from each member of 10 families, five of which were re-sampled 6 months later. Each morphological type of Strep. mutans appearing on SB-20 medium was identified by a biochemical micromethod and by bacteriocin typing. Ninety-three per cent of the 46 subjects harboured Strep. mutans and multiple types were detected in 78 per cent of adults and 46 per cent of infected children. Each mouth yielded c/e/f biotypes and 46 per cent also carried d/g types. Generally, saliva types were the same as those in plaque and the second sampling confirmed the first. Most fathers did not share strains with others in the family but all the infected children shared at least one common strain with the mother. The mother as the major source of Strep. mutans infection in young children was confirmed.
为了确定潜在致龋变形链球菌的感染源，对10个家庭中每个成员的非刺激性唾液和两份邻面菌斑样本进行了检测，其中5个家庭在6个月后重新采样。在SB - 20培养基上出现的每种变形链球菌形态类型，通过生化微量方法和细菌素分型进行鉴定。46名受试者中有93%携带变形链球菌，78%的成年人和46%受感染儿童检测到多种类型。每个口腔都产生了c/e/f生物型，46%还携带d/g类型。一般来说，唾液中的类型与菌斑中的相同，第二次采样证实了第一次的结果。大多数父亲与家庭中的其他成员没有共享菌株，但所有受感染的儿童至少与母亲共享一种共同菌株。母亲作为幼儿变形链球菌感染的主要来源得到了证实。
