Sexually transmitted diseases are preventable ailments that can cause harmful and costly complications, including reproductive health problems, fetal and perinatal health problems, and cancer.

In 2017, 52 cases of chlamydia per 10,000 residents were reported in our region, a 245% increase since 2001. However, the rate has dropped 9% since the peak in 2010. New York's rate was higher, at 59 per 10,000 in 2017, and has followed a similar pattern as the regional rate, more than doubling since 2001.

The local counties with the highest number of cases per 10,000 in 2017 were Monroe (67, up 6% since 2016) and Orleans (36, up 4% from 2016). The rate in the City of Rochester was 155, a 3% increase from the previous year and almost three-times greater than their rate of 58 in 2001. The lowest frequencies were in Wyoming (18, down 24% from 2016) with the next lowest in Yates (21, down 10% from 2016). The rate decreased in each local county from 2016 except in Monroe, Orleans, and Wayne (up 6%, 4%, and 9% respectively).

Not all sexually transmitted disease cases are reported. Variations in screening procedures and community awareness can have an impact on recorded trends. There are some differences in how the state and Monroe County report data (e.g., out-of-county residents tested by a county provider, duplicate tests), which may result in some discrepancies in data reported for Rochester. Data for this indicator are expected to be released in the fourth quarter.