Nagayama N, Ohmori M
National Hospital Organization Tokyo Hospital, Kiyose City, Japan.
Int J Tuberc Lung Dis. 2006 Oct;10(10):1117-22.
Newly notified cases of tuberculosis (TB) for 5 years (1998 and 2000-2003) in Japan.
To study the seasonality of notification for various forms of TB.
Descriptive analyses of newly notified cases by month of the year. Seasonal variations were compared among various forms of TB.
In almost all the forms of TB examined, the numbers of newly notified TB cases were the lowest from November to January. For childhood and pleural TB, the numbers of cases of TB were highest from March to May (spring) and from April to June (spring to early summer), respectively. For sputum smear-positive pulmonary tuberculosis (PTB) in the young, the number of cases was also highest from March to May. For lymph node TB (except mediastinal) and sputum smear-positive PTB in the elderly (aged > or =50 years), the numbers of cases were highest from May to July (late spring to summer) and from June to August (summer), respectively.
The seasonality of TB notification differs for the various forms of TB, which may reflect differences in the seasonality of clinical development of different types of TB disease such as primary, early and late post-primary TB.
日本5年（1998年以及2000 - 2003年）新报告的结核病（TB）病例。
研究不同类型结核病报告的季节性。
按年份月份对新报告病例进行描述性分析。比较不同类型结核病的季节性变化。
在几乎所有检查的结核病类型中，新报告的结核病病例数在11月至1月最低。对于儿童结核病和胸膜结核，病例数分别在3月至5月（春季）和4月至6月（春季至初夏）最高。对于年轻患者的痰涂片阳性肺结核（PTB），病例数在3月至5月也最高。对于淋巴结结核（纵隔除外）和老年患者（年龄≥50岁）的痰涂片阳性PTB，病例数分别在5月至7月（晚春至夏季）和6月至8月（夏季）最高。
不同类型结核病的结核病报告季节性不同，这可能反映了不同类型结核病（如原发性、原发性早期和晚期）临床发展季节性的差异。
