Causative organism of acute salpingitis silently :
chlamydia remains silently without any symptoms or with minimal symptoms in endocervix for a long time before noticed and hence damge with more when compared to gonoccocal infection Reference: Shaw's textbook of Gynaecology 16th edition page no 177
Streptococcus
Neisseria
Chlamydia
Ureaplasma
Infections of the genital tract