STREPTOKOKKHO (az yunoni sreptos — silsila va …kokkho), yak jinsi bakteriyahoi kurashakli beharakatro guyand. Dar khok, nabotot va pusti hayvonotu odam zindagi mekunand. Steptokkokhoi dardangez boisi paydoishi dardi gulu (angisha), saromos, zahroludshavii khun va gayra megardand; bazeashon eritrosithoi khunro hal (gemoliz) mekunand. Baze namudhoi Steptokkokho baroi istehsoli mahsuloti shiri (jurgot, kefir va gayra) istifoda meshavad.