As in the previous years, the data needed for the preparation of the present report covering were collected via the Danish Microbiology Database MiBa. The data comprise all positive and negative test results for oculo-genital infection caused by Chlamydia C. The data include civil registration numbers, and disease episodes can therefore be delimited to the individual level.
A new disease episode is defined as an interval of more than 42 days between two positive test episodes. Several negative test results within a single year are counted as a single negative testing episode.
For patients with a valid civil registration number, information about the municipal code and thereby the area and region is collected from the Danish civil registration system. In the current report for , numbers from are often provided to allow for comparison.
Until and through , monitoring was based on direct notifications from the DCMs, as presented in Table 1. Through , the numbers presented in Table 1 were shown for the number of persons tested. In the present report, the number of testing episodes from to has been added. The extent of chlamydia testing performed in private laboratories remains unknown. Such data are not included in this report. In , a total of , persons , women, 85, men and 1, of unknown sex were tested for chlamydia by a total of , testing episodes, whereas the number of detected cases was 41, This constituted an increase from , when the number of detected cases was 36, among , tested persons in , testing episodes.
The number of chlamydia cases increased considerably in , which may possibly be explained by the lifting of the restrictions and possibly by increased travel activity following the COVID pandemic, Table 1. Only some records of tested persons include information of sex, age and area. Therefore, positive rates may vary in the following.
