Epidemiological and clinical characteristics of psittacosis cases in Daxing District, Beijing in 2023
10.3760/cma.j.cn231583-20240620-00175
- VernacularTitle:2023年北京市大兴区鹦鹉热病例流行病学及临床特征分析
- Author:
Mengnan LI
1
;
Yue HU
1
;
Zhiping LI
1
;
Qiuling LI
1
;
Yadi GAN
1
;
Xinyu WANG
1
;
Jinfeng TANG
1
Author Information
1. 北京市大兴区疾病预防控制中心传染病与地方病防制科，北京 102600
- Publication Type:Journal Article
- Keywords:
Psittacosis;
Pneumonia;
Clinical manifestations;
Epidemiological characteristics
- From:
Chinese Journal of Endemiology
2025;44(4):323-326
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the epidemiological and clinical characteristics of patients with psittacosis, in order to provide a basis for early diagnosis and prevention of the disease.Methods:Clinical data of psittacosis cases reported in 2023 from China Disease Prevention and Control Information System in Daxing District, Beijing were collected, and the patients' general information, epidemiological characteristics, clinical characteristics, imaging examination results, laboratory test results, treatment and prognosis were retrospectively analyzed.Results:A total of 7 cases of psittacosis were reported in Daxing District in 2023, with no clustered infection in households or workplaces. There were 4 males and 3 females, with a median age of 66 years old, and a range of 52 to 82 years old. Epidemiological investigation revealed that 6 patients had a clear history of contact with poultry (4 had first contact with parrots or pigeons, and 2 had long-term exposure to pigeons, parrots or wild birds). The onset time was concentrated in April and May. The primary clinical manifestations included high fever (6 cases), fatigue (4 cases), and chills (3 cases). The imaging examination results showed that inflammatory changes occurred in the unilateral lung of 6 patients, and both lungs were affected in 1 patients. Laboratory test results indicated elevated neutrophill percentage in 6 patients, decreased white blood cell counts in 2 patients, elevated white blood cell counts in 2 patients, and elevated C-reactive protein levels in 7 patients. Metagenomic next-generation sequencing test showed that all seven patients were positive for Chlamydia psittaci. All 7 patients were treated with quinolone or tetracycline antibiotics, with 6 cured and discharged, and 1 died. Conclusion:Psittacosis is usually manifested clinically as high fever, fatigue, and unilateral lung inflammation, often associated with poultry exposure.
