“…Outbreaks of C. pneumoniae in closed communities such as families, schools and military garrisons have been observed (Kuo et al, 1995;Yamazaki et al, 1990;Mordhorst et al, 1992;Blasi et al, 1994;Hagiwara et al, 1999;Kleemola et al, 1988;Ekman et al, 1993). We have also encountered outbreaks of C. pneumoniae in nursery schools, kindergartens, elementary schools and junior high schools (Kishimoto et al, 1994;Soda et al, 1997).…”