Age group (year)

2015

2016

2017

Average rate

Proportion of emm 12

3 - 4

3.2% (7/221)

2.6% (7/266)

1.3% (3/234)

2.4% (17/721)

86.7% (13/15)

5 - 9

5.1% (16/315)

4.9% (13/264)

6.2% (18/292)

5.4% (47/871)

73.3% (33/45)

10 - 14

10.4% (27/260)

9.7% (25/259)

7.3% (19/260)

9.1% (71/779)

43.3% (26/60)