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ALASKA STATE VIROLOGY LABORATORY (ASVL) CONFIRMED INFLUENZA
ASVL Laboratory-Confirmed Specimens (by PCR and Culture) by Week, 2008–09
Click figure to enlarge
INFLUENZA CONFIRMED BY RAPID INFLUENZA DIAGNOSTIC TEST
Rapid Influenza Diagnostic Test Results by Week Since August 30, 2009
Updated 11/18/2009
Period 08/30/2009 through 11/20/2009
#
of
Cases
|
200 |
|
|
|
|
|
|
|
|
|
|
|
|
| 180 |
| 160 |
| 140 |
| 120 |
| 100 |
| 80 |
| 60 |
| 40 |
| 20 |
| |
5 |
12 |
19 |
26 |
3 |
10 |
17 |
24 |
31 |
7 |
14 |
21 |
Sep
2009 |
Oct
2009 |
Nov
2009 |
Date by Week Ending
|
Rapid Influenza Diagnostic Test Results by Region Since August 30, 2009
| |
No. Positive for |
Date of Positive Specimen* |
| Region |
Influenza A
|
Influenza B
|
Influenza A/B
|
Influenza A |
Influenza B |
Influenza A/B |
| Latest |
Latest |
Latest |
| Anchorage/Mat-Su |
443 |
2 |
105 |
11/14/2009 |
10/23/2009 |
11/05/2009 |
| Gulf Coast |
42 |
1 |
21 |
11/10/2009 |
10/12/2009 |
11/09/2009 |
| Interior |
48 |
|
11 |
11/05/2009 |
|
11/02/2009 |
| Northern |
10 |
|
4 |
11/04/2009 |
|
10/14/2009 |
| Southeast |
125 |
1 |
4 |
11/15/2009 |
10/31/2009 |
11/04/2009 |
| Southwest |
115 |
|
1 |
11/06/2009 |
|
09/18/2009 |
| Statewide |
788 |
4 |
163 |
11/15/2009 |
10/31/2009 |
11/09/2009 |
| Unknown |
5 |
|
17 |
10/09/2009 |
|
09/20/2009 |
*Date of illness, date of specimen collection or date received at laboratory; other respiratory viruses are not included in this report.
HOSPITALIZATIONS FOR PNEUMONIA AND INFLUENZA
Notes:
- These data are gathered by weekly survey of all 25 Alaska hospitals.
- From September 1 through October 31, 2009, hospitalization data were limited to patients with laboratory-confirmed influenza.
- Reports since November 1, 2009 represent the number of patients who were hospitalized with a new case of clinically diagnosed pneumonia or influenza-like illness (regardless of whether or not influenza was laboratory-confirmed) during the previous week. This expanded reporting criterion enhances our capacity to estimate the burden of influenza-associated hospitalizations in Alaska.
- The Section of Epidemiology reports these data weekly to the US Centers for Disease Control and Prevention.
LABORATORY-CONFIRMED INFLUENZA DEATHS
Notes:
- These data are gathered by weekly survey of all 25 Alaska hospitals. Not all hospitals may respond in a given week.
- Out of hospital deaths of any Alaska resident, regardless of location of death, are also counted.
- Deaths are counted in the week in which the death occurred.
INFLUENZA-LIKE ILLNESS (ILI)
Influenza-like Illness Surveillance
In Alaska, the percentage of Influenza-like-illness (ILI) visits to sentinel providers for the week ending November 14, 2009 was 3.0%. Nationally, the percentage of ILI visits to sentinel providers for the week ending November 7, 2009 was 6.7%. This percentage was above the national baseline of 2.3%.
Updated 11/18/2009
|
Percentage of Visits for Influenza-like Illness reported by the US Outpatient Influenza-like Illness Surveillance Network (ILINet) in Alaska
Note: The weekly percentage is based on an average of 255 patient visits per week.
Click figure to enlarge
HISTORIC DATA
Prepared by the Section of Epidemiology, based on data supplied by the State Virology Laboratory, Fairbanks, and other laboratories. Questions? Contact any member of the infectious disease team at the Section of Epidemiology in Anchorage at 907-269-8000 or Mary Westcott or Terry Schmidt at the State Virology Laboratory in Fairbanks at 907-474-7017.
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|
|
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A
B
A/B
