Overall Trend
  • Chlamydia is a sexually transmitted infection, and was the most frequently reported infectious disease in Chatham-Kent in 2018. 
  • In 2018, there were 270 reported cases of chlamydia among Chatham-Kent residents, which accounted for 74% of all reported sexually-transmitted and blood-borne infections and 48% of all reported infectious diseases.
  • The incidence rate was 288.0 (251.2, 319.2) per 100,000 which was significantly lower than the rate of 326.3 (323.4, 329.2) per 100,000 for Ontario.
  • The incidence rate for Chatham-Kent in 2018 was not significantly different when compared to the previous 5-year average.
  • Over time, rates provincially and locally have been increasing gradually.
Age-standardized incidence rate of Chlamydia, Chatham-Kent and Ontario, 2009-2018
Age-standardized incidence rate of Chlamydia, Chatham-Kent and Ontario, 2009-2018
By Age Group
  • Those between the ages of 15 to 24 experienced significantly higher rates compared to other age groups.
  • In Chatham-Kent, those aged 15 to 24 and 45 to 64 experienced significantly lower rates compared to Ontarians of the same age groups.
  • Of the 1286 reported cases in Chatham-Kent from 2014 to 2018, 98% were between the ages of 15 and 44.
Incidence rate of Chlamydia, by age, Chatham-Kent and Ontario, 2014-2018 (combined)
Incidence rate of Chlamydia, by age, Chatham-Kent and Ontario, 2014-2018 (combined)
By Sex
  • Females experienced significantly higher rates compared to males.
  • Rates among Chatham-Kent males and females were significantly lower than provincial rates. 
  • Of the 1286 reported cases in Chatham-Kent from 2014 to 2018, 65% were among females. 
  • In Chatham-Kent, the rate for females aged 15 to 24 was nearly triple the rate for males of the same age group, and females aged 25 to 44 also experienced significantly higher rates compared to same-aged males.
Incidence rate of Chlamydia, by sex, Chatham-Kent and Ontario, 2014-2018 (combined)
Age-standardized rate of ED visits due to intentional self-harm, by sex, Chatham-Kent, Ontario and Sub-regions, 2017