Washington State Influenza 2015-16

[Ronan Kelly]

Week 10: March 6, 2016?March 12, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity remains elevated
Please note all data are preliminary and may change as data are updated.
Week 10: March 6, 2016?March 12, 2016
Washington State Department of Health, Communicable Disease Epidemiology
Washington State
Influenza Update
 Twenty nine lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one
pediatric death.
 During week 10, 519 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 111 specimens positive
for influenza. Fifty five specimens were positive for influenza B, 43 were positive for influenza A (H1N1), 12 were
positive for influenza A (subtyping not performed), and one was positive for influenza A (H3N2).
 During week 10, the proportion of outpatient visits for influenza-like illness (ILI) was 1.1 percent, at the baseline of
1.1 percent.
 Influenza is characterized as regional in Washington.
...
Twenty nine laboratory-confirmed influenza deaths have been reported since week 30 of 2015, including one pediatric
death. Twenty deaths were attributable to influenza A, eight to influenza B and one to co-infection of influenza A and B.
...
Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 7 // 0.30
50?64 // 8 // 0.57
65+ // 13 // 1.39
Total // 29 // 0.42

[Ronan Kelly]

Week 11: March 13, 2016?March 19, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity remains elevated
Please note all data are preliminary and may change as data are updated.

Influenza Update
 Thirty seven lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one
pediatric death.
 During week 11, 595 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 121 specimens positive
for influenza. Fifty two specimens were positive for influenza B, 39 were positive for influenza A (H1N1), 27 were
positive for influenza A (subtyping not performed), and three were positive for influenza A (H3N2).
 During week 11, the proportion of outpatient visits for influenza-like illness (ILI) was 1.1 percent, at the baseline of
1.1 percent.
 Influenza is characterized as regional in Washington
...
Thirty seven laboratory-confirmed influenza deaths have been reported since week 30 of 2015, including one pediatric
death. Twenty six deaths were attributable to influenza A, ten to influenza B and one to co-infection of influenza A and B.
...
Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 9 // 0.39
50?64 // 12 // 0.86
65+ // 15 // 1.60
Total // 37 // 0.54
...

[Ronan Kelly]

Week 12: March 20, 2016?March 26, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity remains elevated
Please note all data are preliminary and may change as data are updated.

 Forty three lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one
pediatric death.
 During week 12, 202 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 44 specimens positive
for influenza. Twenty specimens were positive for influenza B, 12 were positive for influenza A (H1N1) and 12 were
positive for influenza A (subtyping not performed).
 During week 12, the proportion of outpatient visits for influenza-like illness (ILI) was 1.9 percent, above the
baseline of 1.1 percent.
 Influenza is characterized as regional in Washington.
...
Forty three laboratory-confirmed influenza deaths have been reported since week 30 of 2015, including one pediatric death. Twenty nine deaths were attributable to influenza A, thirteen to influenza B and one to co-infection of influenza A and B.
...
Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 9 // 0.39
50?64 // 15 // 1.08
65+ // 18 // 1.92
Total // 43 // 0.54
...

[Ronan Kelly]

Week 13: March 27, 2016?April 2, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity remains elevated
Please note all data are preliminary and may change as data are updated.

Week 13: March 27, 2016?April 2, 2016
Washington State Department of Health, Communicable Disease Epidemiology
Washington State
Influenza Update
 Forty nine lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one
pediatric death.
 During week 13, 475 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 87 specimens positive
for influenza. Thirty eight specimens were positive for influenza B, 23 were positive for influenza A (H1N1), 22
were positive for influenza A (subtyping not performed), and 4 were positive for influenza A (H3N2).
 During week 13, the proportion of outpatient visits for influenza-like illness (ILI) was 1.3 percent, above the
baseline of 1.1 percent.
 Influenza is characterized as regional in Washington
...
Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 9 // 0.39
50?64 // 17 // 1.22
65+ // 22 // 2.35
Total // 49 // 0.71
...

[Ronan Kelly]

Week 14: April 3, 2016?April 9, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity is decreasing

 Fifty eight lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one
pediatric death.
 During week 14, 426 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 56 specimens positive
for influenza. Thirty one specimens were positive for influenza B, 10 were positive for influenza A (H1N1), 10 were
positive for influenza A (subtyping not performed), and 5 were positive for influenza A (H3N2).
 During week 14, the proportion of outpatient visits for influenza-like illness (ILI) was 1.0 percent, below the baseline
of 1.1 percent.
 Influenza is characterized as regional in Washington.
...

Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 10 // 0.43
50?64 // 17* // 1.37
65+ // 22* // 2.99
Total // 58 // 0.84
...

*(sic) Comment: The values for the rates changed, but the Number of deaths was not updated. By calculation, these figures should be 19 and 28.

[Ronan Kelly]

Week 15: April 10, 2016?April 16, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity is decreasing


 Sixty lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one pediatric
death.
 During week 15, 466 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 52 specimens positive
for influenza. Twenty eight specimens were positive for influenza B, 14 were positive for influenza A (H1N1), 5
were positive for influenza A (subtyping not performed), and 5 were positive for influenza A (H3N2).
 During week 15, the proportion of outpatient visits for influenza-like illness (ILI) was 0.8 percent, below the baseline
of 1.1 percent.
 Influenza is characterized as local in Washington.
..
Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 12 // 0.52
50?64 // 18 // 1.29
65+ // 29 // 3.10
Total // 60 // 0.87
...

Comment: Numbers seem to have been fixed, however the rate for ages 50-64 has declined from last week. - Ro

[Ronan Kelly]

Week 16: April 17, 2016?April 23, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity is decreasing

 Sixty two lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one
pediatric death.
 During week 16, 236 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 23 specimens positive
for influenza. Six specimens were positive for influenza B, 12 were positive for influenza A (H1N1), three were
positive for influenza A (subtyping not performed), and two were positive for influenza A (H3N2).
 During week 16, the proportion of outpatient visits for influenza-like illness (ILI) was 0.4 percent, below the baseline
of 1.1 percent.
 Influenza is characterized as local in Washington.
...
Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 12 // 0.52
50?64 // 19 // 1.37
65+ // 30 // 3.20
Total // 62 // 0.90
...

[Ronan Kelly]

Week 18: May 1, 2016?May 7, 2016

http://www.doh.wa.gov/Portals/1/Documents/5100/420-100-FluUpdate.pdf

State Summary: Flu activity is decreasing

 Sixty three lab-confirmed influenza deaths have been reported for the 2015-2016 season to date, including one
pediatric death.
 During week 18, 363 specimens were tested by the World Health Organization/National Respiratory and Enteric
Virus Surveillance System (WHO/NREVSS) collaborating laboratories in Washington, with 24 specimens positive
for influenza. Eight specimens were positive for influenza B, ten were positive for influenza A (H1N1), one was
positive for influenza A (subtyping not performed), and five were positive for influenza A (H3N2).
 During week 18, the proportion of outpatient visits for influenza-like illness (ILI) was 0.9 percent, below the baseline
of 1.1 percent.
 Influenza is characterized as local in Washington.
...
Table 3: Number and rate of reported laboratory-confirmed influenza associated
deaths by age group, Washington, 2015-2016 season to date
Age Group(in years) // Number of Deaths // Death Rate (per 100,000 population)
0?4 // 0 // 0.0
5?24 // 1 // 0.06
25?49 // 12 // 0.52
50?64 // 19 // 1.37
65+ // 31 // 3.31
Total // 63 // 0.92

...