Journal article

Assortative sexual mixing among heterosexuals in Australia: implications for herd protection in males from a female human papillomavirus vaccination program

Eric PF Chow, Christopher K Fairley



The aim was to investigate the assortative sexual mixing by country of birth among heterosexuals in Australia. An analysis of 1060 heterosexual couples who attended the Melbourne Sexual Health Centre between 2011 and 2014 was conducted. Of the 1060 couples, 27% (n = 281) were both Australian-born men and women, and 42% (n = 445) were both overseas-born. Of the 171 couples with women aged ≤21 years, 41% (n = 70) were both born in Australia and 33% (n = 56) were both born overseas. A strong assortative mixing pattern by country of birth was observed among all 1060 couples (r = 0.361; 95% CI: 0.320-0.403), and among 171 couples with women aged ≤21 years (r = 0.481; 95% CI: 0.379-0.584).


Awarded by National Health and Medical Research Council (NHMRC) program

Awarded by Australian NHMRC

Funding Acknowledgements

The authors acknowledge A. Afrizal for his assistance with data extraction. This work was supported by the National Health and Medical Research Council (NHMRC) program grant (number: 568971). EPFC is supported by the Early Career Fellowships from the Australian NHMRC (number: 1091226).