Sexually Transmitted Infections in Melbourne, Australia from 1918 to 2016: nearly a century of data.

Introduction: Our aim was to describe trends in the number of bacterial sexually transmitted infections (STIs) diagnosed at Melbourne's sexual health clinic over a century.

Methods: A retrospective analysis of STI diagnoses (gonorrhoea, infectious syphilis and chancroid) among individuals attending Melbourne's sexual health service over 99 years between 1918 and 2016.

Results: Substantial increases in STI rates coincided with World War II, the 'Sexual Revolution of the 1960s and 1970s', and the last 10 years.