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Table 1 Frequency of newly notified tuberculosis cases in Japan, 2007–2015

From: Seasonality of newly notified pulmonary tuberculosis in Japan, 2007–2015

 

All

Spring

Summer

Fall

Winter

n (%)

N = 199,856

50,203 (25.1)

54,181 (27.1)

49,307 (24.7)

46,165 (23.1)

Gender

 Male

124,228 (62.2)

31,512 (62.8)

33,386 (61.6)

30,359 (61.6)

28,971 (62.8)

 Female

75,628 (37.8)

20,795 (38.4)

20,795 (38.4)

18,948 (38.4)

17,194 (37.2)

Age

  ≤ 4 y

302 (0.2)

81 (0.2)

78 (0.1)

74 (0.2)

69 (0.1)

 5–14 y

374 (0.2)

90 (0.2)

113 (0.2)

89 (0.2)

82 (0.2)

 15–24 y

7393 (3.7)

2122 (4.2)

2163 (4.0)

1660 (3.4)

1448 (3.1)

 25–44 y

30,714 (15.4)

7633 (15.2)

8618 (15.9)

7448 (15.1)

7015 (15.2)

 45–64 y

39,922 (20.0)

10.083 (20.1)

10,893 (20.1)

9595 (19.5)

9351 (20.3)

 65–74 y

33,467 (16.8)

8420 (16.8)

8833 (16.3)

8370 (17.0)

7844 (17.0)

  ≥ 75 y

87,310 (43.8)

21,254 (42.3)

23,542 (43.5)

22,182 (45.0)

20.332 (44.0)

  1. Month of each season was defined as spring (March–May), summer (June–August), fall (September–November), and winter (December–February) according to the definitions by the Japan Meteorological Agency [16]