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Michigan 2010-2011 Season: Weeks 40-39

M

Missouriwatcher

Editor, Senior Moderator
Week 40: No Activity
MDSS data for the week ending October 9th indicated that aggregate influenza case reports and individual influenza reports remained similar to the previous week?s levels. Aggregate influenza cases and individual influenza cases are lower than levels seen during the same reporting period in 2009.

Emergency department visits from constitutional and respiratory complaints remained steady compared to the previous week?s levels.

During the week ending October 9, 2010, the proportion of visits due to influenza-like illness (ILI) remained at low levels at 0.6% overall.

Ten sentinel laboratories reported for the week ending October 9, 2010. All labs (SE, SW, C, N) reported no influenza A or B positive test results. Testing volume is slowly increasing at most labs. One SE lab reported several positive RSV test results.
http://www.michigan.gov/documents/MIFluFocus_1_5_06_146893_7.pdf
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779---,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-41

Re: Michigan 2010-2011 Season: Weeks 40-41

Week 41: Sporadic
MDSS data for the week ending October 16th indicated that aggregate influenza case reports and individual influenza reports remained similar to the previous week’s levels. Aggregate influenza cases and individual influenza cases are lower than levels seen during the same reporting period in 2009.

ILI: 0.7%
2 hospitalizations
1 A/H3 isolate; 1 A/H1N1 isolate; 2 parainfluenza
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779_40563-138142--,00.html
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779---,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-42

Re: Michigan 2010-2011 Season: Weeks 40-42

Week 42: Sporadic
MDSS data for the week ending October 23rd indicated that aggregate influenza case reports and individual influenza reports remained similar to the previous week’s levels.

ILI: 0.3%
There was 1 pediatric hospitalization (total 3 since Oct 1, 2010)
No positive isolates
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779---,00.html
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779_40563-138142--,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-43

Re: Michigan 2010-2011 Season: Weeks 40-43

Week 43: Sporadic
MDSS data for the week ending October 30th indicated that aggregate influenza case reports and individual influenza reports remained similar to the previous week?s levels.

ILI: 0.6%
There was 1 pediatric hospitalization (total 4 since Oct 1, 2010)
No positive isolates
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779---,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-45

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

Week 45: Sporadic
ILI: 1%
No new hospitalizations; total 4 pediatric since Oct. 1, 2020. Based on these data, the estimated incidence rate of pediatric influenza hospitalization in the catchment area, from October 1-November 13, is 4 per 100,000.

MDSS data for the week ending November 13 indicated that aggregate and individual influenza reports remained similar to the previous week?s levels.

Emergency department visits from constitutional and respiratory complaints remained steady compared to the previous week?s levels.

During November 7-13, no influenza isolates from Michigan residents were identified at MDCH Bureau of Laboratories. Eleven sentinel laboratories reported for the week ending November 13, 2010. One lab (SW) reported one influenza A positive lab result. Two sites (1SE, 1C) reported low levels of RSV positives.
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779_40563_48357-191722--,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-46

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

Week 46: Sporadic
Positive isolate: A/H3
MDSS data for the week ending November 20 indicated that aggregate and individual influenza reports remained similar to the previous week?s levels.

Emergency department visits from constitutional complaints increased slightly, while respiratory complaints decreased slightly, compared to the previous week?s levels. In the past week, there were ten
constitutional alerts in the SW(3), C(6) and N(1) Influenza Surveillance Regions and six respiratory alerts in the SE(2), SW(1), C(2) and N(1) Influenza Surveillance Regions.

ILI: 0.7% overall; this is below the regional baseline of 1.8%. Activity increased in two surveillance regions: North (0.4%) and Southwest (0.7%); and decreased in the remaining two surveillance regions: Southeast
(0.2%) and Central (1.2%).
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779_40563_48357-191722--,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-1

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

Week 1: Local Activity
ILI: 0.8%
A/H1N1 and A/H3 detected

During January 2-8, there were no new lab-confirmed influenza hospitalizations within the catchment area (Clinton, Eaton and Ingham counties); the total since October 1, 2010 is 1 adult and 8 pediatric cases. Based on these data, the estimated influenza hospitalization incidence rate in the catchment area, from October 1-January 8, is 8 per 100,000 for children and 0.3 per 100,000 for adults.
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779-121711--,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-2

Re: Michigan 2010-2011 Season: Weeks 40-2

Week 2: Local Activity
ILI: 0.8%

MDSS data for the week ending January 15 indicated that individual and aggregate influenza reports increased when compared to the previous week?s levels. Individual influenza cases are higher, and aggregate influenza cases are slightly lower, than levels seen during the same time last year.

Based on these data, the estimated influenza hospitalization incidence rate in the catchment area, from October 1-January 15, is 8 per 100,000 for children and 0.6 per 100,000 for adults.
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779-121711--,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-4 (One Pediatric Death; Influenza B)

Re: Michigan 2010-2011 Season: Weeks 40-4 (One Pediatric Death; Influenza B)

Week 4:
1 pediatric death (Influenza B)
2 new hospitalizations; total since 3 adult and 10 pediatric

ILI: 1.7%
During January 23-29, twelve 2009 influenza A/H1N1, thirteen influenza A/H3, and one influenza B isolates in Michigan residents were reported by MDCH Bureau of Laboratories.
http://www.michigan.gov/documents/MIFluFocus_1_5_06_146893_7.pdf
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779-121711--,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-4 (No New Deaths; Total 1)

Re: Michigan 2010-2011 Season: Weeks 40-4 (No New Deaths; Total 1)

Week 5: Widespread
No new deaths; total 1
6 new hospitalizations; total 18 (Based on these data, the estimated influenza hospitalization incidence rate in the catchment area, from October 1-February 5, is 13 per 100,000 for children and 1.7 per 100,000 for adults.)

ILI: 1.7%
MDSS data for the week ending February 5th indicated that individual reports had a notable increase when compared to the previous week?s levels, while aggregate reports increased slightly.
http://www.michigan.gov/documents/MIFluFocus_1_5_06_146893_7.pdf
 
Re: Michigan 2010-2011 Season: Weeks 40-6 (No New Deaths; Total 1)

Re: Michigan 2010-2011 Season: Weeks 40-6 (No New Deaths; Total 1)

Week 6: Widespread
No new deaths; total 1
ILI: 2.3% (baseline1.8%)
During February 6-12, fourteen 2009 influenza A/H1N1, ten influenza A/H3, and two influenza B isolates in Michigan residents were reported by MDCH Bureau of
Laboratories.

6 new hospitalizations; the total since October 1, 2010 is 8 adult and 17 pediatric cases. Based on these data, the estimated influenza hospitalization incidence rate in the catchment area, from October 1-February 5, is 17 per 100,000 for children and 2.3 per 100,000 for adults.
http://www.michigan.gov/documents/MIFluFocus_1_5_06_146893_7.pdf
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779---,00.html
 
Re: Michigan 2010-2011 Season: Weeks 40-7 (One New Teenage Death; Total 2)

Re: Michigan 2010-2011 Season: Weeks 40-7 (One New Teenage Death; Total 2)

Week 6: Widespread
1 new teenage death; total 2
ILI: 2.2% (baseline1.8%)

During February 13-19, twenty 2009 influenza A/H1N1, eleven influenza A/H3, and ten influenza B isolates in Michigan residents were reported by MDCH Bureau of Laboratories. 17 sentinel labs (SE, SW, C, N) reported for the week ending February 19, 2011. 16 labs (SE, SW, C, N) reported influenza A positives, of which 9 (SE, SW, C, N) had high flu A activity. 11 labs reported flu B positive results, of which 4 labs (SE) reported increasing flu B positives. 16 sites (SE, SW, C, N) reported RSV positives, of which 5 labs (SE, SW) reported high positives. Testing volumes remain high.

During February 13-19, there were 13 new lab-confirmed influenza hospitalizations within the catchment area (Clinton, Eaton and Ingham counties); the total since October 1, 2010 is 14 adult and 24 pediatric cases. Based on these data, the estimated influenza hospitalization incidence rate in the catchment area, from October 1-February 19, is 24 per 100,000 for children and 4 per 100,000 for adults.
http://www.michigan.gov/documents/MIFluFocus_1_5_06_146893_7.pdf
http://www.michigan.gov/mdch/0,1607,7-132-2940_2955_22779---,00.html
 
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