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Updated: Apr 28, 2026

Forward Genetic Approaches in Chlamydia trachomatis
Published on: October 23, 2013
Chlamydia trachomatis epidemiology in Canadians of Chinese ethnicity: a population-based study
Brian E Ng, Jat Sandhu1, Réka Gustafson
1Vancouver Coastal Health University of British Columbia. jat.sandhu@vch.ca.
Objectives:
To compare the rates of Chlamydia trachomatis infection between those of Chinese ethnicity and non-Chinese ethnicity in a large Canadian urban setting.
Methods:
We examined rates of Chlamydia among residents of Vancouver and Richmond, Canada, by Chinese and non-Chinese ethnicity, from 2006 to 2010. We stratified cases by age group, sex and ethnicity. We analyzed 12,555 cases of Chlamydia from 2006 to 2010.
Results:
The overall rate of Chlamydia was 276 per 100,000 per year. Chlamydia rates were 236 per 100,000 among those of Chinese ethnicity and 338 per 100,000 among non-Chinese. While overall rates among individuals of Chinese ethnicity were lower, rates among older Chinese women were significantly higher than among their non-Chinese counterparts.
Conclusions:
Physicians serving patients of Chinese ethnicity should be aware that rates among Chinese-Canadians are substantial, with rates among older women higher than among non-Chinese women, and they should consider this when screening for sexually transmitted infections in this population. Further research is needed to elucidate why this is the case.
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