Jasir A, Noorani A, Mirsalehian A, Schalen C
Department of Medical Microbiology, University of Lund, Sweden.
Epidemiol Infect. 2000 Feb;124(1):47-51. doi: 10.1017/s0950268899003088.
We examined three populations from the Tehran region and the North part of Iran (Gilan), in all more than 5000 individuals, for carriage of Streptococcus pyogenes (group A streptococci; GAS). Children or adults with acute pharyngotonsillitis and healthy school children harboured GAS in 34-1, 20.0 and 21.0%, respectively. Typing of 421 randomly selected isolates showed a predominance of M-types M4, M5, M11, M12, as well as the provisional type 4245; however, many of the isolates were T and M non-typable. Forty-three percent of all strains were opacity factor (OF) negative. The type distribution differed markedly from that reported in 1973-4, when M types 1 and 12 were predominant.
我们对来自德黑兰地区和伊朗北部(吉兰省)的三个人群进行了检查,总共检查了5000多人,以检测化脓性链球菌(A组链球菌;GAS)的携带情况。患有急性咽扁桃体炎的儿童或成人以及健康学童的GAS携带率分别为34.1%、20.0%和21.0%。对421株随机选择的分离株进行分型显示,M4、M5、M11、M12型以及暂定的4245型占主导地位;然而,许多分离株无法进行T和M分型。所有菌株中有43%为不透明因子(OF)阴性。这种类型分布与1973 - 1974年报告的情况明显不同,当时M1型和M12型占主导地位。