Department of Microbiology,Mid Essex Hospital Services NHS Trust,Chelmsford,UK.
Department of Ear Nose and Throat,Mid Essex Hospital Service NHS Trust,Chelmsford,UK.
Epidemiol Infect. 2018 Oct;146(14):1811-1812. doi: 10.1017/S0950268818001899. Epub 2018 Jul 6.
Otitis externa is the inflammation of the external auditory canal. The disease is common and shows a seasonal variation with a greater incidence in warmer months. Pseudomonas aeruginosa is a common pathogen in otitis externa and in this retrospective study, we show a corresponding seasonal variation in the proportional incidence of P. aeruginosa isolates from otitis externa in South East England. In total 7770 patients were diagnosed with otitis externa over a period of 9 years from January 2008 to December 2016. P. aeruginosa was isolated from 2802 patients (proportional incidence of 36%). Incidence was higher in the months of August, September and October and in patients between 5 and 15 years of age. We postulate a combination of increased contact with water during warm weather in the holiday season and increased rainfall in the preceding season as a putative mechanism for the seasonal trends.
外耳炎是外耳道的炎症。这种疾病很常见，具有季节性变化，温暖月份的发病率更高。铜绿假单胞菌是外耳炎的常见病原体，在这项回顾性研究中，我们显示了来自英格兰东南部外耳炎分离株的铜绿假单胞菌的比例发病率的相应季节性变化。在 2008 年 1 月至 2016 年 12 月的 9 年期间，共有 7770 名患者被诊断患有外耳炎。从 2802 名患者（比例发病率为 36%）中分离出铜绿假单胞菌。发病率在 8 月、9 月和 10 月较高，在 5 至 15 岁的患者中较高。我们推测，在假期季节温暖天气下接触水增加和前一个季节降雨量增加是季节性趋势的潜在机制。
