Year

Observation period

<3 years of age

3 - 4 years of age

Total (<5 years of age)

2011

Epidemic months*

397

-

397***

Extended period**

542

-

542***

2012

Epidemic months*

355

214

569

Extended period**

857

407

1264

2013

Epidemic months*

398

242

640

Extended period**

783

452

1235

2014

Epidemic months*

323

274

597

Extended period**

407

330

737

Total

Epidemic months

1473

730

2203

Extended period

2589

1189

3778