Table 3. Open in new tab Comparison of...

Season	Predominant Virus	Birth Cohort
Prepandemic
2000–2001	H1	1.6	123	3.5	86	8.5	165	24.5	241	19.1	267	29.0	487	28.8	313
2001–2002	H3	30.8	221	34.4	122	30.0	207	32.5	268	34.1	279	45.0	518	37.2	462
2002–2003	H1	14.9	101	17.6	85	19.3	150	16.0	237	36.1	166	13.8	689	23.2	745
2003–2004	H3	31.9	238	41.9	179	31.6	250	32.2	311	42.7	457	44.1	726	43.9	1027
2004–2005	H3	38.1	307	43.3	215	41.7	345	41.3	380	47.0	406	35.0	488	31.4	608
2005–2006	H3	30.0	140	34.8	135	33.0	206	37.4	238	45.0	211	34.6	292	47.7	549
2006–2007	H1	18.1	127	19.6	102	24.8	165	30.0	230	40.0	260	35.1	288	28.8	781
2007–2008	H3	22.5	120	26.4	106	24.9	221	36.1	319	31.2	298	44.6	359	55.8	611
2008–2009	H1	4.7	86	16.2	99	22.6	146	41.0	212	41.8	220	44.1	286	35.3	595
Pandemic and Later
2009–2010	H1pdm09	4.0	1463	10.5	2621	21.2	4259	32.0	5566	31.1	4332	36.3	4854	46.3	6648
2010–2011	H3	37.4	1141	34.0	1505	29.4	1894	40.6	2239	39.4	1841	44.8	2241	44.6	3608
2011–2012	H3	31.8	912	27.6	1270	25.3	1555	27.3	1742	30.4	1616	36.5	1721	33.3	2233
2012–2013	H3	50.8	1963	43.1	3050	36.7	3170	33.8	3155	39.3	2650	43.1	2939	40.6	3368
2013–2014	H1pdm09	13.5	960	21.2	2563	31.1	3902	38.7	4517	41.7	3655	43.5	3796	41.5	4182
2014–2015	H3	56.2	2215	43.7	4794	34.2	4752	30.7	4276	29.6	3221	32.7	3487	34.0	4072
2015–2016	H1pdm09	7.6	631	14.0	2480	21.5	3421	26.9	3830	32.3	2765	30.2	2829	27.8	3257
2016–2017	H3	48.8	957	45.3	3450	41.0	3720	35.7	3542	33.5	2416	32.3	2476	34.5	2956

Season

Predominant Virus

Birth Cohort

1918–1922

1933–1937

1947–1951

1957–1961

1968–1972

1977–1981

1985–1989

Percent A Positive

Number of Specimens Tested

Percent A Positive

Number of Specimens Tested

Percent A Positive

Number of Specimens Tested

Percent A Positive

Number of Specimens Tested

Percent A Positive

Number of Specimens Tested

Percent A Positive

Number of Specimens Tested

Percent A Positive

Number of Specimens Tested

Prepandemic

2000–2001

1.6

123

3.5

8.5

165

24.5

241

19.1

267

29.0

487

28.8

313

2001–2002

30.8

221

34.4

122

30.0

207

32.5

268

34.1

279

45.0

518

37.2

462

2002–2003

14.9

101

17.6

19.3

150

16.0

237

36.1

166

13.8

689

23.2

745

2003–2004

31.9

238

41.9

179

31.6

250

32.2

311

42.7

457

44.1

726

43.9

1027

2004–2005

38.1

307

43.3

215

41.7

345

41.3

380

47.0

406

35.0

488

31.4

608

2005–2006

30.0

140

34.8

135

33.0

206

37.4

238

45.0

211

34.6

292

47.7

549

2006–2007

18.1

127

19.6

102

24.8

165

30.0

230

40.0

260

35.1

288

28.8

781

2007–2008

22.5

120

26.4

106

24.9

221

36.1

319

31.2

298

44.6

359

55.8

611

2008–2009

4.7

16.2

22.6

146

41.0

212

41.8

220

44.1

286

35.3

595

Pandemic and Later

2009–2010

H1pdm09

4.0

1463

10.5

2621

21.2

4259

32.0

5566

31.1

4332

36.3

4854

46.3

6648

2010–2011

37.4

1141

34.0

1505

29.4

1894

40.6

2239

39.4

1841

44.8

2241

44.6

3608

2011–2012

31.8

912

27.6

1270

25.3

1555

27.3

1742

30.4

1616

36.5

1721

33.3

2233

2012–2013

50.8

1963

43.1

3050

36.7

3170

33.8

3155

39.3

2650

43.1

2939

40.6

3368

2013–2014

H1pdm09

13.5

960

21.2

2563

31.1

3902

38.7

4517

41.7

3655

43.5

3796

41.5

4182

2014–2015

56.2

2215

43.7

4794

34.2

4752

30.7

4276

29.6

3221

32.7

3487

34.0

4072

2015–2016

H1pdm09

7.6

631

14.0

2480

21.5

3421

26.9

3830

32.3

2765

30.2

2829

27.8

3257

2016–2017

48.8

957

45.3

3450

41.0

3720

35.7

3542

33.5

2416

32.3

2476

34.5

2956

Season	Predominant Virus	Birth Cohort
Prepandemic
2000–2001	H1	1.6	123	3.5	86	8.5	165	24.5	241	19.1	267	29.0	487	28.8	313
2001–2002	H3	30.8	221	34.4	122	30.0	207	32.5	268	34.1	279	45.0	518	37.2	462
2002–2003	H1	14.9	101	17.6	85	19.3	150	16.0	237	36.1	166	13.8	689	23.2	745
2003–2004	H3	31.9	238	41.9	179	31.6	250	32.2	311	42.7	457	44.1	726	43.9	1027
2004–2005	H3	38.1	307	43.3	215	41.7	345	41.3	380	47.0	406	35.0	488	31.4	608
2005–2006	H3	30.0	140	34.8	135	33.0	206	37.4	238	45.0	211	34.6	292	47.7	549
2006–2007	H1	18.1	127	19.6	102	24.8	165	30.0	230	40.0	260	35.1	288	28.8	781
2007–2008	H3	22.5	120	26.4	106	24.9	221	36.1	319	31.2	298	44.6	359	55.8	611
2008–2009	H1	4.7	86	16.2	99	22.6	146	41.0	212	41.8	220	44.1	286	35.3	595
Pandemic and Later
2009–2010	H1pdm09	4.0	1463	10.5	2621	21.2	4259	32.0	5566	31.1	4332	36.3	4854	46.3	6648
2010–2011	H3	37.4	1141	34.0	1505	29.4	1894	40.6	2239	39.4	1841	44.8	2241	44.6	3608
2011–2012	H3	31.8	912	27.6	1270	25.3	1555	27.3	1742	30.4	1616	36.5	1721	33.3	2233
2012–2013	H3	50.8	1963	43.1	3050	36.7	3170	33.8	3155	39.3	2650	43.1	2939	40.6	3368
2013–2014	H1pdm09	13.5	960	21.2	2563	31.1	3902	38.7	4517	41.7	3655	43.5	3796	41.5	4182
2014–2015	H3	56.2	2215	43.7	4794	34.2	4752	30.7	4276	29.6	3221	32.7	3487	34.0	4072
2015–2016	H1pdm09	7.6	631	14.0	2480	21.5	3421	26.9	3830	32.3	2765	30.2	2829	27.8	3257
2016–2017	H3	48.8	957	45.3	3450	41.0	3720	35.7	3542	33.5	2416	32.3	2476	34.5	2956

Table 3.

Open in new tab

Comparison of Influenza Virologic Surveillance by Birth Cohort, 2000–2001 Through 2016–2017 Seasons - Number of Specimens Tested and Percentage Positive for Influenza A

Season	Predominant Virus	Birth Cohort
		1918–1922		1933–1937		1947–1951		1957–1961		1968–1972		1977–1981		1985–1989
		Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested
Prepandemic
2000–2001	H1	1.6	123	3.5	86	8.5	165	24.5	241	19.1	267	29.0	487	28.8	313
2001–2002	H3	30.8	221	34.4	122	30.0	207	32.5	268	34.1	279	45.0	518	37.2	462
2002–2003	H1	14.9	101	17.6	85	19.3	150	16.0	237	36.1	166	13.8	689	23.2	745
2003–2004	H3	31.9	238	41.9	179	31.6	250	32.2	311	42.7	457	44.1	726	43.9	1027
2004–2005	H3	38.1	307	43.3	215	41.7	345	41.3	380	47.0	406	35.0	488	31.4	608
2005–2006	H3	30.0	140	34.8	135	33.0	206	37.4	238	45.0	211	34.6	292	47.7	549
2006–2007	H1	18.1	127	19.6	102	24.8	165	30.0	230	40.0	260	35.1	288	28.8	781
2007–2008	H3	22.5	120	26.4	106	24.9	221	36.1	319	31.2	298	44.6	359	55.8	611
2008–2009	H1	4.7	86	16.2	99	22.6	146	41.0	212	41.8	220	44.1	286	35.3	595
Pandemic and Later
2009–2010	H1pdm09	4.0	1463	10.5	2621	21.2	4259	32.0	5566	31.1	4332	36.3	4854	46.3	6648
2010–2011	H3	37.4	1141	34.0	1505	29.4	1894	40.6	2239	39.4	1841	44.8	2241	44.6	3608
2011–2012	H3	31.8	912	27.6	1270	25.3	1555	27.3	1742	30.4	1616	36.5	1721	33.3	2233
2012–2013	H3	50.8	1963	43.1	3050	36.7	3170	33.8	3155	39.3	2650	43.1	2939	40.6	3368
2013–2014	H1pdm09	13.5	960	21.2	2563	31.1	3902	38.7	4517	41.7	3655	43.5	3796	41.5	4182
2014–2015	H3	56.2	2215	43.7	4794	34.2	4752	30.7	4276	29.6	3221	32.7	3487	34.0	4072
2015–2016	H1pdm09	7.6	631	14.0	2480	21.5	3421	26.9	3830	32.3	2765	30.2	2829	27.8	3257
2016–2017	H3	48.8	957	45.3	3450	41.0	3720	35.7	3542	33.5	2416	32.3	2476	34.5	2956

Season	Predominant Virus	Birth Cohort
		1918–1922		1933–1937		1947–1951		1957–1961		1968–1972		1977–1981		1985–1989
		Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested	Percent A Positive	Number of Specimens Tested
Prepandemic
2000–2001	H1	1.6	123	3.5	86	8.5	165	24.5	241	19.1	267	29.0	487	28.8	313
2001–2002	H3	30.8	221	34.4	122	30.0	207	32.5	268	34.1	279	45.0	518	37.2	462
2002–2003	H1	14.9	101	17.6	85	19.3	150	16.0	237	36.1	166	13.8	689	23.2	745
2003–2004	H3	31.9	238	41.9	179	31.6	250	32.2	311	42.7	457	44.1	726	43.9	1027
2004–2005	H3	38.1	307	43.3	215	41.7	345	41.3	380	47.0	406	35.0	488	31.4	608
2005–2006	H3	30.0	140	34.8	135	33.0	206	37.4	238	45.0	211	34.6	292	47.7	549
2006–2007	H1	18.1	127	19.6	102	24.8	165	30.0	230	40.0	260	35.1	288	28.8	781
2007–2008	H3	22.5	120	26.4	106	24.9	221	36.1	319	31.2	298	44.6	359	55.8	611
2008–2009	H1	4.7	86	16.2	99	22.6	146	41.0	212	41.8	220	44.1	286	35.3	595
Pandemic and Later
2009–2010	H1pdm09	4.0	1463	10.5	2621	21.2	4259	32.0	5566	31.1	4332	36.3	4854	46.3	6648
2010–2011	H3	37.4	1141	34.0	1505	29.4	1894	40.6	2239	39.4	1841	44.8	2241	44.6	3608
2011–2012	H3	31.8	912	27.6	1270	25.3	1555	27.3	1742	30.4	1616	36.5	1721	33.3	2233
2012–2013	H3	50.8	1963	43.1	3050	36.7	3170	33.8	3155	39.3	2650	43.1	2939	40.6	3368
2013–2014	H1pdm09	13.5	960	21.2	2563	31.1	3902	38.7	4517	41.7	3655	43.5	3796	41.5	4182
2014–2015	H3	56.2	2215	43.7	4794	34.2	4752	30.7	4276	29.6	3221	32.7	3487	34.0	4072
2015–2016	H1pdm09	7.6	631	14.0	2480	21.5	3421	26.9	3830	32.3	2765	30.2	2829	27.8	3257
2016–2017	H3	48.8	957	45.3	3450	41.0	3720	35.7	3542	33.5	2416	32.3	2476	34.5	2956

This Feature Is Available To Subscribers Only