Upsurge of Chlamydia pneumoniae respiratory tract infections in 2024/2025 in Southern Germany
摘要
We report a never seen before upsurge of Chlamydia pneumoniae (Cp) respiratory tract infections in 2024/25 in southern Germany. Regarding 43,558 Cp PCR tests analyzed, the positivity rate increased from 0.3% in 2015–2020 to 2.6% in 2024, and 2.4% in 2025 until August 2025, peaking at ≥ 6.0% with > 100 monthly cases in October and November 2024. Children aged 6–14 years were predominantly affected, and co-infections with other pathogens were frequently detected. We aim at raising awareness concerning Cp infections.