<i>Chlamydia pneumoniae</i>, strain TWAR, as the cause of an outbreak in a boys' school previously called psittacosis

Abstract

Sera from an outbreak of acute respiratory illness in a boys boarding school originally thought to have been due to psittacosis (1) have been re-examined and evidence is presented that suggests that the outbreak was caused by Chlamydia pneumoniae, strain TWAR (2).