Oklahoma 2010-2011 Flu Season: Weeks 40-35 (No New Deaths; total 26)

[Missouriwatcher]

Week 40:
1 new death (25-49 age group)

Sentinel surveillance for influenza?like illness revealed less than 1% of outpatient visits met the criteria for ILI during the reporting period from October 3, 2010 through October 9, 2010.

Since September 1, 2010, eight cases of influenza-associated hospitalizations were reported. Five (63%) of eight hospitalizations occurred among children less than 5 years of age; three have occurred among adults 25-49 years of age. All hospitalizations had influenza rapid or IFA positive test results. Two specimens were forwarded to the Public Health Lab for PCR testing and were negative.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-41

Week 41:
ILI: 1%
1 new hospitalization
* Since September 1, 2010, nine cases of influenza-associated hospitalizations have been reported.
* Hospitalizations have occurred among residents of the following counties: Tulsa, Cherokee, Rogers, Osage, Wagoner and Sequoyah.
* Five (56%) of nine hospitalizations have occurred among children less than 5 years of age; one has occurred in the 5-18 age group and three have occurred among adults 25-49 years of age.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-42

Week 42:
* The percentage of outpatient visits meeting the criteria for influenza?like illness1 (ILI) increased to 2.1% (70/3381) during the week ending October 23, 2010.
* Four regions had notable increases in the percentage of outpatient visits due to ILI: southeast, central, northwest, and central. There were no positive rapid tests from sentinel physicians or laboratories in these regions.
* 5.2% (7/134) of rapid influenza tests performed by sentinel laboratories were positive.
* None of the 11 respiratory specimens tested at OSDH Public Health Laboratory for influenza by polymerase chain reaction (PCR) were positive.
* Since September 1, 2010, thirteen cases of influenza-associated hospitalizations have been reported to OSDH; four were reported during October 17?23.
* Hospitalizations have occurred among residents of the following counties: Tulsa, Oklahoma, Muskogee, Cherokee, Rogers, Osage, Wagoner, and Sequoyah.
* All hospitalizations were influenza positive by rapid antigen test. One case was PCR positive for influenza A 2009 H1.
* No influenza-associated deaths were reported this week. Since the beginning of the 2010-2011 season, one death has been reported.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-43

Week 43:
3 new hospitalizations
ILI: 1.7%
One of the four specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) was positive for 2009 influenza A (H1N1).

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-44

Week 44: Sporadic
1 new hospitalization
* The percentage of outpatient visits meeting the criteria for ILI1 of 1.6% (49/3009) was similar to the previous week.
* The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the northwest and central regions.
* 4.9% (7/142) of rapid influenza tests performed by sentinel laboratories were positive; 5 (71.4%) indicated infection with type A viruses and two detected type B influenza.
* One of the five specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) was positive for influenza A (H3N2). The positive specimen was collected from the northeast region.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

CDC definition:
Local: Outbreaks of influenza or increases in ILI cases and recent laboratory-confirmed influenza in a single region of the state.

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-45

Week 45: Local
2 new hospitalizations; total 17
* The percentage of outpatient visits meeting the criteria for ILI1 increased to 2.6% (76/2952).
* The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the Tulsa county and northwest regions.
* 70% (53/76) of patients meeting the ILI criteria were under 24 years of age.
* 4.3% (8/188) of rapid influenza tests performed by sentinel laboratories were positive; 7 (87.5%) indicated infection with type A viruses and one detected type B influenza.
* One of the five specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) was positive for influenza A (H3N2). The positive specimen was collected from the east central region.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-46

Week 46:
11 new hospitalizations
ILI: 3.4% (The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the Tulsa county and southeast regions.) 80% (82/103) of patients meeting the ILI criteria were under 24 years of age.

5.9% (9/152) of rapid influenza tests performed by sentinel laboratories were positive; 8 (88.9%) indicated infection with type A viruses and one detected type B influenza.

Three of the nine specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) were positive for influenza B. The positive specimens were collected from the Tulsa County region.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-47

Week 47:
* ILI: 2.7%
* The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the Tulsa county and northwest regions.
* 73.4% (47/64) of patients meeting the ILI criteria were between 5 and 49 years of age.
* 4.4% (8/181) of rapid influenza tests performed by sentinel laboratories were positive; 7 (87.5%) indicated infection with type A viruses and one detected type B influenza.
* None of the three specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) were positive for influenza.
* Since September 1, 2010, twenty-nine cases of influenza-associated hospitalizations have been reported to OSDH; one was reported during November 21-November 27.
* All hospitalizations were influenza positive by rapid antigen test. One case was PCR positive for influenza A 2009 H1 and one case was PCR positive for influenza A H3.
* No influenza-associated deaths were reported this week. Since the beginning of the 2010-2011 season, one death has been reported.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-48

Week 48:
7 new hospitalizations; total 36

ILI: 2.1% (The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the Tulsa county and northwest regions.) 84.4% (54/64) of patients meeting the ILI criteria were between 0 and 49 years of age.

4.2% (8/191) of rapid influenza tests performed by sentinel laboratories were positive; 6 (75.0%) indicated infection with type A viruses and two detected type B influenza.

Two of the six specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) were positive for influenza A (H3N2). Positive specimens were from the northeast and Oklahoma county regions.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-49 (1 New Death)

Week 49:
1 new death; total 2
6 new hospitalizations; total 42

* The percentage of outpatient visits meeting the criteria for ILI1 was 2.3% (51/2183).
* The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the Tulsa county and central regions.
* 62.7% (32/51) of patients meeting the ILI criteria were between 5 and 49 years of age.
* 7.4% (15/203) of rapid influenza tests performed by sentinel laboratories were positive; 12 (80.0%) indicated infection with type A viruses and three detected type B influenza.
* One of the five specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) were positive for influenza A (H3N2). The positive specimen was from the Oklahoma county region.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-50

Week 50:
3 new hospitalizations; total 45
No new deaths

ILI: 3.4% The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the Tulsa county and northwest regions. 67.6% of patients meeting the ILI criteria were between 5 and 49 years of age.
7.3% of rapid influenza tests performed by sentinel laboratories were positive; 13 (72.2%) indicated infection with type A viruses and five detected type B influenza.
None of the eight specimens tested at OSDH Public Health Laboratory by polymerase chain reaction (PCR) were positive for influenza.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-51

Week 51: Regional Activity
18 new hospitalizations; total 63
100% positive specimens by PCR (A/H3N2)
ILI: 4.1% (60% between the ages of 5-49)

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-52

Week 52;
32 hospitalizations; total 95

* ILI: 4.9% (The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the southeast, northwest, central, and Tulsa county regions)
* 63.4% of patients meeting the ILI criteria were between 5 and 49 years of age.
* 56% positive (PCR) for influenza.

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-1

Week 1:
47 new hospitalizations; total 149
ILI: 3% (The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the northwest, central, and Tulsa county regions.)
85.7% positive for influenza: A/H3N2

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html

[Missouriwatcher]

Re: Oklahoma 2010-2011 Flu Season: Weeks 40-2 (One New Death)

Week 2:
1 new death; total 3
62 new hospitalizations; total 212
ILI: 5.8% (The percentage of patients meeting the ILI criteria exceeded the 3.5% baseline in the northwest, northeast, southeast, central, Tulsa county and Oklahoma county regions.)
68.3% of ILI were under age 24
46.2% positive for influenza: A/H3N2; 2009 H1N1; B

http://www.ok.gov/health/Disease,_Prevention,_Preparedness/Acute_Disease_Service/Disease_Information/OK_Flu_View.html