2018-19 USA Influenza & Pneumonia Mortality Surveillance Data from the National Center for Health Statistics Mortality Surveillance System

[Ronan Kelly]

Influenza deaths
Week 40: 10
Week 41: 12
Week 42: 19
Week 43: 24
Week 44: 25
Week 45: 30
Week 46: 26
Week 47: 31
Week 48: 38
Week 49: 55
Week 50: 51
Week 51: 88
Week 52: 139
Week 1: 210
Week 2: 257
Week 3: 240
Week 4: 270
Week 5: 321
Week 6: 354
Week 7: 451
Week 8: 449
Week 9: 496
Week 10: 518
Week 11: 464
Week 12: 450
Week 13: 422
Week 14: 299
Week 15: 249
Week 16: 158
Week 17: 95
Total: 6,251

Pneumonia deaths
Week 40: 2,966
Week 41: 2,861
Week 42: 2,981
Week 43: 3,057
Week 44: 2,998
Week 45: 3,017
Week 46: 3,136
Week 47: 3,171
Week 48: 3,272
Week 49: 3,384
Week 50: 3,534
Week 51: 3,472
Week 52: 3,623
Week 1: 3,884
Week 2: 3,993
Week 3: 4,045
Week 4: 3,844
Week 5: 3,824
Week 6: 3,789
Week 7: 3,766
Week 8: 3,840
Week 9: 3,629
Week 10: 3,551
Week 11: 3,708
Week 12: 3,531
Week 13: 3,394
Week 14: 3,225
Week 15: 2,970
Week 16: 2,616
Week 17: 1,918
Total: 100,999

https://gis.cdc.gov/grasp/fluview/mortality.html

Comparison of influenza death certificates Weeks 40 - 17 with corresponding period from previous years (note figures for 2018-19 are preliminary and are likely to increase)
2018-19: 6,251
2017-18: 15,215
2016-17: 6,551
2015-16: 3,067
2014-15: 7,779
2013-14: 4,230
2012-13: 4,501

 

[Ronan Kelly]

[FONT=&quot] [h=1]2018-2019 U.S. Flu Season: Preliminary Burden Estimates[/h] [/FONT]
[FONT=&quot]Espa?ol
[FONT=&quot] NOTE: This is the last week in-season burden estimates will be provided. CDC?s active surveillance for laboratory-confirmed hospitalizations for the 2018-2019 season concluded on April 30, 2018.
*These estimates are preliminary and based on data from CDC?s weekly influenza surveillance reports summarizing key influenza activity indicators.
On This Page

• Limitations
• Frequently Asked Questions

This web page provides weekly preliminary estimates of the cumulative in-season numbers of flu illnesses, medical visits, hospitalizations, and deaths in the United States. CDC has estimated the burden of flu since 2010 using a mathematical model that is based on observed rates of laboratory-confirmed influenza-associated hospitalizations collected through a surveillance network that covers approximately 8.5% of the U.S. population (~27 million people).
The 2018-2019 flu season is the first season CDC has reported in-season burden estimates of flu in the U.S. These in-season estimates will be updated over the course of the flu season.

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[FONT=&quot] [h=3]Limitations[/h] The estimates of the cumulative burden of seasonal influenza are subject to several limitations.
First, the cumulative rate of laboratory-confirmed influenza-associated hospitalizations reported during the season may be an under-estimate of the rate at the end of the season because of identification and reporting delays.
Second, rates of laboratory-confirmed influenza-associated hospitalizations were adjusted for the frequency of influenza testing and the sensitivity of influenza diagnostic assays. However, data on testing practices during the 2018-2019 season are not available in real-time. CDC used data on testing practices from the 2014-2015 influenza season as a proxy. Burden estimates will be updated at a later date when data on contemporary testing practices become available.
Third, estimates of influenza-associated illness and medical visits are based on data from prior seasons, which may not be accurate if the seriousness of illness or patterns of care-seeking have changed.
[h=3]Frequently Asked Questions[/h] [h=4]What does the cumulative burden of influenza for the 2018-2019 season mean?[/h] The cumulative burden of influenza is an estimate of the number of people who have been sick, seen a healthcare provider, been hospitalized, or died as a result of influenza since October 01, 2018. CDC does not know the exact number of people who have been sick and affected by influenza because influenza is not a reportable disease in most areas of the United States. However, these numbers are estimated using a mathematical model, based on observed rates of laboratory-confirmed influenza-associated hospitalizations.
[h=4]How does CDC estimate the cumulative burden of seasonal influenza?[/h] Preliminary estimates of the cumulative burden of seasonal influenza during the 2018-2019 season in the United States are based on crude rates of laboratory-confirmed influenza-associated hospitalizations, reported through the Influenza Hospitalization Surveillance Network (FluSurv-NET), which were adjusted for the frequency of influenza testing during recent prior seasons and the sensitivity of influenza diagnostic assays. Rates of hospitalization were then multiplied by previously estimated ratio of hospitalizations to symptomatic illnesses, and frequency of seeking medical care to calculate symptomatic illnesses, medical visits, and deaths associated with seasonal influenza, respectively.
[h=4]Why does the estimate of cumulative burden change each week?[/h] The estimates of cumulative burden of seasonal influenza are considered preliminary and may change each week as new laboratory-confirmed influenza-associated hospitalizations are reported to CDC. New reports include both new admissions that have occurred during the reporting week and also patients admitted in previous weeks that have been newly reported to CDC.
[h=4]How does the number of flu hospitalizations estimated so far this season compare with previous end-of-season hospitalization estimates?[/h] The number of hospitalizations estimated so far this season is lower than end-of-season total hospitalization estimates for any season since CDC began making these estimates. This table also summarizes all estimated influenza disease burden, by season, in U.S. from 2010-11 through 2017-18.

Top of Page​

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[FONT=&quot] [h=4]Preliminary Cumulative Estimates of Hospitalizations in the U.S. 2018-2019 Flu Season[/h]

*These estimates are preliminary and based on data from CDC?s weekly influenza surveillance reports summarizing key influenza activity indicators.
508 text for this chart:
Estimated number of influenza-associated hospitalizations
The y-axis extends from 0 to 1 million.
The x-axis is a timeline starting November 24 and extending to April 27.
There is a single blue-shaded curve labeled with ?2018/19?.
There are several other lines on the right side of the graph under Total hospitalizations at end of past seasons. The lines are labeled, from top to bottom, as 2017/18, 2014/15, 2016/17, 2012/13, 2013/14, 2015/16, 2010/11, and 2011/12.
https://www.cdc.gov/flu/about/burden/preliminary-in-season-estimates.htm

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[Ronan Kelly]

Influenza deaths
Week 40: 10
Week 41: 12
Week 42: 19
Week 43: 24
Week 44: 25
Week 45: 30
Week 46: 26
Week 47: 31
Week 48: 38
Week 49: 55
Week 50: 51
Week 51: 88
Week 52: 139
Week 1: 210
Week 2: 257
Week 3: 242
Week 4: 272
Week 5: 321
Week 6: 355
Week 7: 453
Week 8: 450
Week 9: 499
Week 10: 520
Week 11: 470
Week 12: 457
Week 13: 430
Week 14: 308
Week 15: 260
Week 16: 166
Week 17: 119
Week 18: 44
Total: 6,381

Pneumonia deaths
Week 40: 2,965
Week 41: 2,861
Week 42: 2,981
Week 43: 3,058
Week 44: 2,997
Week 45: 3,018
Week 46: 3,135
Week 47: 3,169
Week 48: 3,273
Week 49: 3,386
Week 50: 3,534
Week 51: 3,475
Week 52: 3,625
Week 1: 3,885
Week 2: 3,995
Week 3: 4,049
Week 4: 3,850
Week 5: 3,827
Week 6: 3,791
Week 7: 3,774
Week 8: 3,853
Week 9: 3,639
Week 10: 3,579
Week 11: 3,757
Week 12: 3,577
Week 13: 3,455
Week 14: 3,321
Week 15: 3,098
Week 16: 2,936
Week 17: 2,469
Week 18: 1,716
Total: 104,048

https://gis.cdc.gov/grasp/fluview/mortality.html

Comparison of influenza death certificates Weeks 40 - 18 with corresponding period from previous years (note figures for 2018-19 are preliminary and are likely to increase)
2018-19: 6,381
2017-18: 15,334
2016-17: 6,639
2015-16: 3,194
2014-15: 7,829
2013-14: 4,284
2012-13: 4,528

 

[Ronan Kelly]

Influenza deaths
Week 40: 10
Week 41: 12
Week 42: 18
Week 43: 23
Week 44: 25
Week 45: 30
Week 46: 25
Week 47: 31
Week 48: 38
Week 49: 56
Week 50: 51
Week 51: 88
Week 52: 140
Week 1: 208
Week 2: 257
Week 3: 245
Week 4: 272
Week 5: 322
Week 6: 356
Week 7: 460
Week 8: 452
Week 9: 502
Week 10: 522
Week 11: 476
Week 12: 460
Week 13: 438
Week 14: 313
Week 15: 269
Week 16: 172
Week 17: 133
Week 18: 60
Week 19: 39
Total: 6,503

Pneumonia deaths
Week 40: 2,965
Week 41: 2,862
Week 42: 2,982
Week 43: 3,063
Week 44: 2,997
Week 45: 3,018
Week 46: 3,135
Week 47: 3,170
Week 48: 3,279
Week 49: 3,392
Week 50: 3,543
Week 51: 3,483
Week 52: 3,625
Week 1: 3,890
Week 2: 4,005
Week 3: 4,062
Week 4: 3,861
Week 5: 3,832
Week 6: 3,799
Week 7: 3,788
Week 8: 3,867
Week 9: 3,651
Week 10: 3,592
Week 11: 3,786
Week 12: 3,614
Week 13: 3,513
Week 14: 3,407
Week 15: 3,164
Week 16: 3,033
Week 17: 2,696
Week 18: 2,276
Week 19: 1,656
Total: 107,006

https://gis.cdc.gov/grasp/fluview/mortality.html

Comparison of influenza death certificates Weeks 40 - 19 with corresponding period from previous years (note figures for 2018-19 are preliminary and are likely to increase)
2018-19: 6,503
2017-18: 15,387
2016-17: 6,688
2015-16: 3,268
2014-15: 7,851
2013-14: 4,323
2012-13: 4,539

 

[Ronan Kelly]

Influenza deaths
Week 40: 10
Week 41: 12
Week 42: 18
Week 43: 24
Week 44: 25
Week 45: 30
Week 46: 26
Week 47: 31
Week 48: 38
Week 49: 56
Week 50: 51
Week 51: 88
Week 52: 140
Week 1: 210
Week 2: 257
Week 3: 245
Week 4: 272
Week 5: 322
Week 6: 358
Week 7: 466
Week 8: 460
Week 9: 506
Week 10: 522
Week 11: 478
Week 12: 464
Week 13: 441
Week 14: 320
Week 15: 274
Week 16: 178
Week 17: 137
Week 18: 75
Week 19: 51
Week 20: 21
Total: 6,606

Pneumonia deaths
Week 40: 2,967
Week 41: 2,863
Week 42: 2,983
Week 43: 3,063
Week 44: 2,999
Week 45: 3,018
Week 46: 3,137
Week 47: 3,172
Week 48: 3,279
Week 49: 3,392
Week 50: 3,543
Week 51: 3,482
Week 52: 3,626
Week 1: 3,890
Week 2: 4,009
Week 3: 4,063
Week 4: 3,863
Week 5: 3,852
Week 6: 3,847
Week 7: 3,836
Week 8: 3,909
Week 9: 3,681
Week 10: 3,606
Week 11: 3,801
Week 12: 3,633
Week 13: 3,556
Week 14: 3,464
Week 15: 3,229
Week 16: 3,117
Week 17: 2,827
Week 18: 2,624
Week 19: 2,216
Week 20: 1,554
Total: 110,101

https://gis.cdc.gov/grasp/fluview/mortality.html

Comparison of influenza death certificates Weeks 40 - 20 with corresponding period from previous years (note figures for 2018-19 are preliminary and are likely to increase)
2018-19: 6,606
2017-18: 15,430
2016-17: 6,741
2015-16: 3,302
2014-15: 7,865
2013-14: 4,350
2012-13: 4,543

 

[Ronan Kelly]

Wrapping up data for 2018-19;

Influenza deaths
Week 40: 10
Week 41: 12
Week 42: 18
Week 43: 24
Week 44: 25
Week 45: 30
Week 46: 26
Week 47: 31
Week 48: 38
Week 49: 56
Week 50: 51
Week 51: 88
Week 52: 140
Week 1: 210
Week 2: 258
Week 3: 247
Week 4: 274
Week 5: 324
Week 6: 364
Week 7: 478
Week 8: 472
Week 9: 515
Week 10: 541
Week 11: 505
Week 12: 478
Week 13: 459
Week 14: 338
Week 15: 303
Week 16: 201
Week 17: 155
Week 18: 97
Week 19: 69
Week 20: 49
Total: 6,886

Pneumonia deaths
Week 40: 2,969
Week 41: 2,866
Week 42: 2,985
Week 43: 3,064
Week 44: 3,002
Week 45: 3,020
Week 46: 3,142
Week 47: 3,178
Week 48: 3,287
Week 49: 3,398
Week 50: 3,551
Week 51: 3,490
Week 52: 3,635
Week 1: 3,906
Week 2: 4,043
Week 3: 4,084
Week 4: 3,884
Week 5: 3,883
Week 6: 3,889
Week 7: 3,883
Week 8: 3,964
Week 9: 3,744
Week 10: 3,726
Week 11: 3,958
Week 12: 3,784
Week 13: 3,705
Week 14: 3,619
Week 15: 3,438
Week 16: 3,402
Week 17: 3,253
Week 18: 3,201
Week 19: 3,206
Week 20: 3,124
Total: 115,283

https://gis.cdc.gov/grasp/fluview/mortality.html

Comparison of influenza death certificates Weeks 40 - 20 with corresponding period from previous years
2018-19: 6,886
2017-18: 15,430
2016-17: 6,741
2015-16: 3,302
2014-15: 7,865
2013-14: 4,350
2012-13: 4,543