Kløvstad Hilde, Aavitsland Preben
Department for Infectious Disease Epidemiology, Norwegian Institute of Public Health, Oslo, Norway.
Sex Transm Dis. 2009 Jan;36(1):17-21. doi: 10.1097/OLQ.0b013e31818653b0.
The number of Chlamydia trachomatis infections in Norway has been increasing for the last years. A new and enhanced surveillance system was implemented in 2005 to meet the challenges faced by the increasing number of cases.
The new surveillance system is laboratory based. Data are collected once a year from all laboratories on the total number of test performed, and all diagnosed cases from the preceding year. For each case the following variables are reported: date of diagnosis, birth year, sex, and municipality of residence.
By 2006 all laboratories reported data as required. We have observed an increase in yearly diagnosed C. trachomatis cases in Norway during the last years. In 2006, the incidence was 4.6 per 1000 population. The proportion positive tests have increased from 6.0% in 2000 to 7.7% in 2006. In the same period the annual number of tests increased by 13.5%. Surveillance data from 2006 showed that the highest incidence rates were found in women between the ages of 15 to 24 in men aged 20 to 24 and in 2 northernmost regions of the country.
The year 2006 had the highest level of diagnosed cases ever in Norway. To better interpret the observed trend, a voluntary system will be introduced in 2007 to collect test rates by age, gender and geography. There is a need to evaluate current and new strategies to target the group of asymptomatic and untreated young people.
在过去几年中，挪威沙眼衣原体感染病例数一直在增加。2005年实施了一个新的强化监测系统，以应对病例数增加带来的挑战。
新的监测系统以实验室为基础。每年从所有实验室收集一次关于所进行检测的总数以及上一年所有确诊病例的数据。对于每个病例，报告以下变量：诊断日期、出生年份、性别和居住市。
到2006年，所有实验室都按要求报告了数据。在过去几年中，我们观察到挪威每年确诊的沙眼衣原体病例数有所增加。2006年，发病率为每1000人中有4.6例。阳性检测比例从2000年的6.0%上升到了2006年的7.7%。同期，年度检测数量增加了13.5%。2006年的监测数据显示，最高发病率出现在15至24岁的女性、20至24岁的男性以及该国最北部的两个地区。
2006年是挪威确诊病例数有史以来最高的一年。为了更好地解读观察到的趋势，2007年将引入一个自愿系统，按年龄、性别和地理位置收集检测率。有必要评估针对无症状和未接受治疗的年轻人群体的现有及新策略。
