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Table 1 Hospitalizations with a diagnosis of influenza by age group and epidemic season, in absolute number of cases and incidence rates per 100,000 people, in Spanish Public Hospitals between 2008/2009 and 2017/2018

From: Excess hospitalizations and mortality associated with seasonal influenza in Spain, 2008–2018

  

Hospitalizations with a diagnosis of influenza per age group

0–4

5–18

19–49

50–64

65–74

 ≥ 75

 ≥ 65

All ages

2008/2009

N

597

127

267

184

120

306

426

1601

Ratec

24.1

2.1

1.2

2.3

3.2

7.9

5.6

3.5

2009/2010

N

552

438

1476

682

288

387

675

3823

Ratec

22.1

7.0

6.7

8.4

7.6

9.7

8.6

8.2

2010/2011

N

775

263

902

715

314

398

712

3367

Ratec

31.0

4.2

4.2

8.7

8.1

9.7

8.9

7.2

2011/2012

N

683

174

437

465

298

639

937

2696

Ratec

27.5

2.7

2.0

5.5

7.6

15.1

11.5

5.8

2012/2013

N

1004

422

807

839

485

745

1230

4302

Ratec

41.4

6.6

3.8

9.8

12.2

17.4

14.9

9.2

2013/2014

N

1528

359

1983

2110

1574

2674

4248

10,229

Ratec

65.8

5.6

9.6

24.2

38.0

62.1

50.3

22.0

2014/2015

N

1232

486

1138

1753

1894

5357

7251

11,860

Ratec

54.6

7.5

5.6

19.7

44.0

125.0

84.4

25.5

2015/2016

N

3612

1622

4092

5600

4593

6625

11,218

26,144

Ratec

164.0

24.7

20.6

61.5

106.2

151.6

129.0

56.3

2016/2017

N

996

470

1270

2336

3167

11,513

14,680

19,752

Ratec

46.3

7.1

6.5

25.1

71.5

261.9

166.4

42.5

2017/2018

N

2341

981

2887

5483

6804

19,123

25,927

37,619

Ratec

111.1

14.7

14.9

57.6

150.1

431.9

289.3

80.6

9 years meana

N

1419

545

1532

2165

2139

5264

7403

13,063

Ratec

61.1

8.4

7.4

24.8

51.7

123.8

88.2

28.1

3 years meanb

N

2316

1024

2,750

4,473

4,854

12,420

17,275

27,838

Ratec

107.6

15.4

14.0

48.0

109.6

282.4

195.7

59.8

  1. N: Number of hospitalizations with a diagnosis of influenza
  2. aIncludes the following seasons: 2008/2009, 2010/2011, 2011/2012, 2012/2013, 2013/2014, 2014/2015, 2015/2016, 2016/2017, 2017/2018. Excludes season 2009/10, since it was affected by the 2009 influenza A (H1N1) pandemic; b Includes the most recent seasons, namely 2015/2016, 2016/2017, 2017/2018; c Rate of hospitalizations with a diagnosis of influenza per 100,000 people