Increasing rates of Chlamydia trachomatis infection in Alberta, Saskatchewan, and Manitoba compared to Canada overall, between 1991 and 2022

Between 1991 and 2022, the incidence of chlamydia infection increased across Canada and, more particularly, in three provinces (Alberta, Saskatchewan, and Manitoba), which consistently reported chlamydia infection incidence rates 1.5 to 2 times the national average. Young people and females were the most severely affected groups. More complete and consistent epidemiological data, which would include incidence disaggregated by equity indicators, are crucial to addressing the increasing burden of chlamydia in Canada and, more particularly, the Prairie provinces.