Kassowitz law is related to:
Kassowitz law states that as the stages of syphilis progress in a pregnant females outcome of  pregnancy is better.
Pregnancy during primary syphilis can lead to abortion.
Pregnancy in secondary syphilis can lead to still births.
Whereas a pregnant females in tertiary syphilis is more likely to have a live birth.
Gonorrhoea
Herpes genitals
Donovanosis
Syphilis