%0 Conference Proceedings %T Frequency of virulence factors from Streptococcus pneumoniae isolated from children in north east of Iran %A Gholamhosseini Moghaddam, Tahereh %A Rad, Mehrnaz %A Fazlollah Mosavi %A Kiarash Ghazvini %J 15th International and Iranian Congress of Microbiology %D 2014