Yan Chen,1 Jiahuan Tong,2 Jianfeng Wang2 

1Department of General Practice, the First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310018, People’s Republic of China; 2Department of Respiratory Diseases, the First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310018, People’s Republic of China

Correspondence: Jianfeng Wang, Department of Respiratory Diseases, the First Affiliated Hospital of Zhejiang Chinese Medical University, 54 Youdian Road, Shangcheng District, Hangzhou, 310018, People’s Republic of China, Email 2001m@163.com

Abstract: The clinical severity of Chlamydia psittaci infection ranges from asymptomatic to severe pneumonia. Diagnosis poses challenges due to its similarity to other respiratory infections. Treatment includes tetracyclines, macrolides, and fluoroquinolones, with limited evidence on the efficacy of omadacycline. We report a case of an 86-year-old male with severe psittacosis treated with omadacycline, resulting in significant improvement. This highlights the necessity for further research on omadacycline’s role in psittacosis treatment.

Keywords: Chlamydia psittaci, omadacycline, pneumonia