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Colorado 2010-2011 Season: Weeks 40-20 (Final Report)

M

Missouriwatcher

Editor, Senior Moderator
Week 40:
? No influenza-associated hospitalizations have been confirmed.
? Influenza-Like Illness reported by Kaiser Permanente for the Denver-Boulder metropolitan area remained similar to summer ?baseline? levels. Influenza-like illness reported by Mesa County was not above baseline.
? There were no PCR-confirmed specimens tested by the state laboratory (through 10/9).
http://www.cdphe.state.co.us/dc/Influenza/Colorado Flu Report.pdf
 
Re: Colorado 2010-2011 Season: Weeks 40-45

Re: Colorado 2010-2011 Season: Weeks 40-45

Week 45: Sporadic
• For the week ending 11/13, there was one additional influenza-associated hospitalization confirmed. A cumulative total of 3 hospitalizations from three counties have been confirmed this season.
• Influenza-Like Illness level reported by Kaiser Permanente for the Denver-Boulder metropolitan area remained at a relatively low level (0.8%).
• Sentinel hospital labs (15/17 reporting) tested 201 specimens and 0.5% were positive. There were three additional specimens (out of 23 submitted) that tested positive for influenza A (H3) by PCR at the state laboratory and cumulatively 10 (91%) of 11 PCR positive specimens have subtyped as H3. The vast majority of specimens being submitted to the state laboratory for PCR testing are still not confirming by PCR.
http://www.cdphe.state.co.us/dc/Influenza/
 
Re: Colorado 2010-2011 Season: Weeks 40-46

Re: Colorado 2010-2011 Season: Weeks 40-46

Week 46:
? For the week ending 11/20, there were no additional influenza-associated hospitalizations confirmed. A cumulative total of 3 hospitalizations from three counties have been confirmed this season. http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness level reported by Kaiser Permanente for the Denver-Boulder metropolitan area remained at a relatively low level (0.7%). Influenza-like illness reported by Mesa County remained at 0%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (16/17 reporting) tested 219 specimens and 1.8% were positive. There were three additional specimens (out of 13 submitted) that tested positive for influenza A (H3) by PCR at the state laboratory and cumulatively 14 (93%) of 15 PCR positive specimens have subtyped as H3. The majority of specimens being submitted to the state laboratory for PCR testing are still not confirming by PCR.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf
http://www.cdphe.state.co.us/dc/Influenza/
 
Re: Colorado 2010-2011 Season: Weeks 40-47

Re: Colorado 2010-2011 Season: Weeks 40-47

Week 47:
? For the week ending 11/27, there were two new influenza-associated hospitalizations confirmed, one from the current week and one from a previous week, bringing the cumulative total to 5 hospitalizations from 4 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness level reported by Kaiser Permanente for the Denver-Boulder metropolitan area continues to be below 1.0%. Influenza-like illness reported by Mesa County remained at 0%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (16/17 reporting) tested 233 specimens and 4.3% were positive. There were four additional specimens (out of 14 submitted) that tested positive for influenza A (H3) by PCR at the state laboratory and cumulatively 19 (95%) of 20 PCR positive specimens have subtyped as H3. The majority of specimens being submitted to the state laboratory for PCR testing are still not confirming by PCR.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf
http://www.cdphe.state.co.us/dc/Influenza/
 
Re: Colorado 2010-2011 Season: Weeks 40-48

Re: Colorado 2010-2011 Season: Weeks 40-48

Week 48:
? For the week ending 12/04, there were three new influenza-associated hospitalizations confirmed, two from the current week and one from a previous week, bringing the cumulative total to 8 hospitalizations from 4 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness level reported by Kaiser Permanente for the Denver-Boulder metropolitan area increased slightly but continues to be below 1.0%. Influenza-like illness reported by Mesa County remained at 0%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (15/17 reporting) tested 243 specimens and 4% were positive. There were seven additional specimens (out of 14 submitted) that tested positive for influenza A (H3) by PCR at the state laboratory and cumulatively 32 (94%) of 34 PCR positive specimens have subtyped as H3 (only one has confirmed as type B).
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

? There was one influenza A (H3) outbreak reported from a long-term care facility in Jefferson County.

To view the weekly Colorado Flu (surveillance) Report (available as of 12/09), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-49

Re: Colorado 2010-2011 Season: Weeks 40-49

Week 49:
? For the week ending 12/11, there were five influenza-associated hospitalizations reported
bringing the cumulative total to 14 hospitalizations from 6 counties, all in the Denver-Boulder
metropolitan area. http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness level reported by Kaiser Permanente for the Denver-Boulder
metropolitan area remained below 1.0%. Influenza-like illness reported by Mesa County
remained at 0%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (15/17 reporting) tested 262 specimens and 9.2% were positive. There
were ten additional specimens (out of 18 submitted) that tested positive for influenza by PCR
at the state laboratory. Of these, nine were influenza A (H3) and one was influenza B.
Cumulatively, 49 (94%) of 52 PCR positive specimens have subtyped as H3, one (2%) as
H1N1 and two (4%) have confirmed as type B.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

? There were no additional outbreaks reported.
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-50

Re: Colorado 2010-2011 Season: Weeks 40-50

Week 50:
? For the week ending 12/18, there were 8 influenza-associated hospitalizations reported
bringing the cumulative total to 29 hospitalizations from 11 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness level reported by Kaiser Permanente for the Denver-Boulder
metropolitan area remained low at 1.0%. Influenza-like illness reported by Mesa County
remained at 0%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (17/17 reporting) tested 305 specimens and 5.6% were positive
(88% for Type A). There were 20 additional specimens (out of 35 submitted) that tested
positive for influenza by PCR at the state laboratory. Cumulatively, 84 (92%) of 91 PCR
positive specimens have subtyped as H3, two (2%) as 2009 H1N1, and four (4%) have
confirmed as type B.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

? There were no additional outbreaks reported.

To view the weekly Colorado Flu (surveillance) Report (available as of 12/22), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-51

Re: Colorado 2010-2011 Season: Weeks 40-51

Week 51:
Synopsis: Influenza activity continued to increase gradually.
? For the week ending 12/25, there were 16 new influenza-associated hospitalizations reported, 12 from the current week and 4 from a previous week, bringing the cumulative total to 45 hospitalizations from 13 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness level reported by Kaiser Permanente for the Denver-Boulder metropolitan area remained low at 0.9%. Influenza-like illness reported by Mesa County increased slightly to 0.2%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (16/17 reporting) tested 308 specimens and 10.7% were positive (88% for Type A). There were 38 additional specimens (out of 52 submitted) that tested positive for influenza by PCR at the state laboratory. Cumulatively, 132 (91%) of 145 PCR positive specimens have subtyped as H3, 6 (4%) as 2009 H1N1, and 6 (4%) have confirmed as type B.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

? There was one influenza-associated outbreak reported from a long-term care facility in Baca
County.

To view the weekly Colorado Flu (surveillance) Report (available as of 12/28), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-52

Re: Colorado 2010-2011 Season: Weeks 40-52

Week 52:
? For the week ending 01/01, there were 20 new influenza-associated hospitalizations reported,
bringing the cumulative total to 75 hospitalizations from 19 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness levels reported by Kaiser Permanente for the Denver-Boulder
metropolitan area have been near 1.0% for the past 5 weeks. Influenza-like illness reported by
Mesa County remained low at 0.1%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (15/17 reporting) tested 450 specimens and 10.9% were positive
(98% for Type A). High positivity rates were reported from a number of hospitals in the Denver
metro area, El Paso County, and Larimer County. There were 40 additional specimens
(out of 50 submitted) that tested positive for influenza by PCR at the state laboratory.
Cumulatively, 187 (89%) of 209 PCR positive specimens have subtyped as H3, 9 (4%) as
2009 H1N1, and 11 (5%) have confirmed as type B.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

? There were no influenza-associated outbreaks reported in the past week.

To view the weekly Colorado Flu (surveillance) Report (available as of 01/05/11), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-1

Re: Colorado 2010-2011 Season: Weeks 40-1

Week 1:
Influenza activity continued to gradually increase. Although influenza A/H3N2 continues to be the predominant circulating strain, 2009 H1N1 and influenza B viruses appear to be circulating in increasing amounts.

? For the week ending 01/08, there were 20 new influenza-associated hospitalizations reported
along with 12 additional hospitalizations for the previous week, bringing the cumulative total to
110 hospitalizations from 21 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

? Influenza-Like Illness levels reported by Kaiser Permanente for the Denver-Boulder
metropolitan area have been near 1.0% for the past 6 weeks. Influenza-like illness reported by
Mesa County remained low at 0.2%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

? Sentinel hospital labs (16/17 reporting) tested 429 specimens and 12% were positive
(86% for Type A) compared to 11% for the previous week. There were 54 additional
specimens that tested positive for influenza by PCR at the state laboratory; of these, 87% were
type A and 13% were type B. Of the type A positive specimens, 77% subtyped as H3N2 and
23% subtyped as 2009 H1N1.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

? There were 2 influenza outbreaks in long term care facilities reported in the past week
(one each from Denver County and Yuma County).

To view the weekly Colorado Flu (surveillance) Report (available as of 01/12/11), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-2 (Three Deaths)

Re: Colorado 2010-2011 Season: Weeks 40-2 (Three Deaths)

Week 2:
Two adult deaths have been reported this season, one each from Adams County and
Jefferson County. The first pediatric death of the season (adolescent from Garfield County)
will be reported next week.


Influenza activity continued to increase and spread geographically. Although influenza
A/H3N2 continues to be the predominant circulating strain, 2009 H1N1 and influenza B viruses
appear to be circulating in increasing amounts.

For the week ending 01/15, there were 16 new influenza-associated hospitalizations reported
along with 11 additional hospitalizations for the previous week, bringing the cumulative total to
136 hospitalizations from 24 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

Influenza-Like Illness levels reported by Kaiser Permanente for the Denver-Boulder
metropolitan area have been near 1.0% for the past 7 weeks. Influenza-like illness reported by
Mesa County increased to 0.5%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

Sentinel hospital labs (17/17 reporting) tested 495 specimens and 14.3% were positive
(83% for Type A) compared to 12.1% for the previous week. There were 19 additional
specimens that tested positive for influenza A by PCR at the state laboratory. Of the type A
positive specimens, 74% subtyped as H3N2 and 26% subtyped as 2009 H1N1.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

There were no influenza-associated outbreaks reported in the past week. Cumulatively, there
have been five LTCF outbreaks reported from 3 counties; Denver County (3), Baca County (1)
and Yuma County (1).


To view the weekly Colorado Flu (surveillance) Report (available as of 01/20/11), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-3 (One New Death)

Re: Colorado 2010-2011 Season: Weeks 40-3 (One New Death)

Week 3:
1 new death; total 4
28 new hospitalizations; total 176

Synopsis: Influenza activity continued to increase and spread geographically. Influenza A/H3N2 continues to be the predominant circulating strain, though 2009 H1N1 and influenza B viruses appear to be circulating in increasing amounts.
• For the week ending 01/22, there were 28 new influenza-associated hospitalizations reported along with 10 additional hospitalizations for the previous week, bringing the cumulative total to 176 hospitalizations from 26 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf
• Influenza-Like Illness levels reported by Kaiser Permanente for the Denver-Boulder metropolitan area increased from 1.0 to 1.2%. Influenza-like illness reported by Mesa County remained low at 0.4%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf
• Sentinel hospital labs (17/17 reporting) tested 578 specimens and 16.4% were positive (80% for Type A) compared to 14.3% the previous week. During the past two weeks, PCR typing and subtyping of submitted specimens to the state laboratory indicates: H3N2 – 64%; 2009 H1N1 – 29%; Type B – 7%.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf
• Brush (Morgan County) reported an influenza B outbreak in a middle school. There were no LTCF outbreaks reported in the past week. Cumulatively, there have been five LTCF outbreaks reported from 3 counties; Denver (3), Baca (1) and Yuma (1).
• A total of 4 deaths (1 adolescent and 3 adults) have been reported.
To view the weekly Colorado Flu (surveillance) Report (available as of 01/26/11), go to: http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-4 (One New Pediatric Death)

Re: Colorado 2010-2011 Season: Weeks 40-4 (One New Pediatric Death)

Week 4:
• A total of 5 deaths (2 pediatric and 3 adults) have been reported. The second pediatric death,
reported by El Paso County, was an adolescent with a significant underlying medical history.

Influenza activity continued to increase. Influenza A/H3N2 continues to be the
predominant circulating strain, although 2009 H1N1 is a close second based on subtyping of
submitted specimens to the CDPHE laboratory.
• For the week ending 01/29, there were 43 new influenza-associated hospitalizations reported
along with 26 additional hospitalizations for the previous week, bringing the cumulative total to
247 hospitalizations from 27 counties.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf
• Influenza-Like Illness levels reported by Kaiser Permanente for the Denver-Boulder
metropolitan area increased to 2.0%. Influenza-like illness reported by Mesa County increased
from 0.4% to 0.7%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf
• Sentinel hospital labs (16/17 reporting) tested 719 specimens and 19.1% were positive
(79% for Type A) compared to 16.4% the previous week. During the past two weeks, PCR
typing and subtyping of submitted specimens to the state laboratory indicates: H3N2 – 50%;
2009 H1N1 – 40%; Type B – 10%.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf


To view the weekly Colorado Flu (surveillance) Report (available as of 02/2/11), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-4 (One New Pediatric Death)

Re: Colorado 2010-2011 Season: Weeks 40-4 (One New Pediatric Death)

Here's the chart from the Week 4 report.

CO Week 4 Isolates.png
 
Re: Colorado 2010-2011 Season: Weeks 40-5 (One New Death; Total 6)

Re: Colorado 2010-2011 Season: Weeks 40-5 (One New Death; Total 6)

Week 5:
1 new death; total 6 (2 pediatric, 4 adult)
A total of 14 outbreaks (11 LTCF and 3 school) have been reported
• A total of 340 hospitalizations from 33 counties have been reported.
http://www.cdphe.state.co.us/dc/Influenza/10_11Hospital.pdf

• Influenza-like Illness levels reported by Kaiser Permanente for the Denver-Boulder
metropolitan area showed a sharp increase during the week ending January 22nd from 1.2% to
2.0%, which continued to steeply increase to 2.7% during most current week. Influenza-like
Illness levels reported by Mesa County also increased steeply from 0.7% to 1.2%.
http://www.cdphe.state.co.us/dc/Influenza/10_11KP_ILI.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11MESA_ILI.pdf

• Sentinel hospital labs (15/17 reporting) saw an increase in the total number of positive
influenza tests; a total of 886 specimens were tested and 22.4% were positive (76% for Type
A) compared to 19.4% the previous week. During the past two weeks, PCR typing and
subtyping of submitted specimens (primarily from hospitalized patients) to the state laboratory
indicates: H3N2 – 46%; 2009 H1N1 – 39%; Type B – 15%.
http://www.cdphe.state.co.us/dc/Influenza/10_11Sentinel_Labs.pdf
http://www.cdphe.state.co.us/dc/Influenza/10_11PCR_results.pdf

To view the weekly Colorado Flu (surveillance) Report (available as of 02/10/11), go to:
http://www.cdphe.state.co.us/dc/Influenza/index.html
 
Re: Colorado 2010-2011 Season: Weeks 40-5 (One New Death; Total 6)

Re: Colorado 2010-2011 Season: Weeks 40-5 (One New Death; Total 6)

Missouriwatcher has provided links to the Colorado Week 5 charts, so I don't want to post them all here. The links above take you directly to the charts. I did, however, want to point out that the hospitalization chart (first link) indicates that H3N2 is decreasing (assuming many of the unsubtyped A samples are pH1N1), pH1N1 is increasing along with Influenza B. This pattern seems to be happening in a lot of places, except in places like Alabama and Louisiana where Influenza B has been dominant.
 
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