the rate of asymptomatic throat carriage of group a streptococcus in school children and associated aso titers in duzce, turkey. | a prospective study was conducted to investigate the rate of group a streptococci (gas) carriers and associated anti-streptolysin o (aso) titers in serum samples in asymptomatic school children in spring in duzce, turkey. pharyngeal swabs were obtained to detect the presence of gas and blood samples were collected to determine elevated aso titers in serum. a total of 351 asymptomatic primary school children were included in the study, and 91 (25.9%) of these were found to be gas carriers. of the ... | 2004 | 15623954 |