浙江省杭州市富阳区16例鹦鹉热病例流行病学及临床特征

Epidemiological and clinical characteristics of 16 cases of psittacosis in Fuyang District of Hangzhou, Zhejiang Province

  • 摘要:目的】 了解杭州市富阳区鹦鹉热病例的流行病学及临床特征,为该病的临床诊疗和防控提供参考依据。【方法】 收集2020年9月—2025年2月现住址在富阳区的鹦鹉热病例的流行病学调查和临床资料,采用描述性流行病学方法分析三间分布特征、暴露史、临床表现、诊疗及实验室检测结果,并结合外环境监测和病例随访情况进行综合分析。【结果】 16例病例的男女性别比为1:1,男性和女性发病率均为0.57/10万,平均年龄为59.88 ± 10.66岁,70~岁和60~岁人群发病率最高,分别为1.41/10万和1.30/10万,14例有禽鸟暴露史(87.50%)。病例的临床症状以高热(15例,93.75%)、咳嗽(11例,68.75%)、咳痰(9例,56.25%)、畏寒(8例,50.00%)等为主。所有病例的C-反应蛋白(CRP)和D-二聚体水平均升高,电子计算机断层扫描(CT)检查均提示肺炎。87.50%(14/16)的病例中性粒细胞升高,93.75%(15/16)的病例淋巴细胞减少。病例发病到就诊间隔天数中位数为4 d,发病到诊断间隔天数中位数为9.5 d,住院天数中位数为9 d。重症组中性粒细胞百分比、CRP、发病到诊断间隔天数、发病到首次用抗生素类药物间隔天数和住院天数均高于非重症组。全部病例经治疗后均好转出院,超过50%的病例确诊后接受奥马环素治疗。【结论】 杭州市富阳区鹦鹉热病例多有明确的禽鸟接触史,早诊早治是预防重症的有效手段。

     

    Abstract: Objective This study aimed to investigate the epidemiological and clinical characteristics of psittacosis in Fuyang District and provide evidence for clinical diagnosis, treatment, prevention and control. Methods We collected epidemiological and clinical data of psittacosis cases residing in Fuyang District from September 2020 to February 2025. Descriptive epidemiological methods were applied to analyze temporal-spatial-demographic distributions, exposure histories, clinical features and laboratory results, combined with environmental surveillance and follow-up data. Results The sex ratio of 16 psittacosis cases was 1:1, with an incidence rate of 0.57/100 000 for both males and females. The mean age was 59.88 ± 10.66 years old, and the highest incidence rates were in the 70~ and 60~ age groups, at 1.41/100 000 and 1.30/100 000 respectively. 14 cases had a history of poultry exposure (87.50%). The predominant symptoms included high fever (15, 93.75%), cough (11, 68.75%), sputum production (9, 56.25%) and chills (8, 50.00%). All cases showed elevated levels of C-reactive protein (CRP) and D-dimer with radiographic evidence of pneumonia on computed tomography (CT) scans. 87.50% (14/16) cases showed increased neutrophil percentage (NE%) and 93.75% (15/16) cases showed decreased lymphocyte percentage (LY%). The median time from onset to consultation was 4 days, the median time from onset to diagnosis was 9.5 days, and the median time of hospitalization was 9 days. The NE%, CRP, days between onset and diagnosis, days between onset and medication, and days of hospitalization in the severe group were all higher than those in the non-severe group. All cases resolved with discharge, and over 50% were treated with omadacycline following confirmed diagnosis. Conclusion Most psittacosis cases reported definitive poultry exposure histories in Fuyang District of Hangzhou. Early diagnosis and early treatment are critical for preventing disease progression to severe stages.

     

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