Norway 2012-13 Lab Surveillance: Week 50-13

[Missouriwatcher]

GISRS week 50:
Large increase from previous weeks in positive detections of influenza A(H1N1)pdm09, A and B. Also detected influenza B(Yamagata).
http://gamapserver.who.int/gareports/Default.aspx?ReportNo=1

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50

Re: Norway 2012-13 Lab Surveillance: Week 50

Edit: March 13 2013: In a recent Norweigan Institute of Public Health website update - weekly reports have been relocated to here ; http://www.fhi.no/tema/influensa/influensaaktivitet It is likely that many of the links in this thread prior to this date no longer work.



machine translated;

Influenza Surveillance 2012-13, week 51 and 52
Published 03.01.2013, updated: 03.01.2013, 12:03

Influenza surveillance shows that the incidence of influenza-like illness in week 51 and 52 continued to increase and is now over the border in outbreaks throughout the country. There are local variations in influenza activity and the influenza viruses circulating. The last two weeks were identified 415 influenza A and 101 influenza B.

In Week 52, 2012 was 2.4% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). Activity increased in all regions and is above the eruption, which is set at 1.4%, but the numbers do not show abnormally high activity. The regions east and south have the highest activity. The figures are based on a lower number of reports than usual, and therefore can be modified as more reports are submitted.

In addition to the influenza virus are also other respiratory viruses in circulation which causes respiratory infections, such as RS-virus.



Figure 1 Proportion of patients to physician consultation was diagnosed with influenza. The figures for last week can be adjusted up or down in the next report.

Virological surveillance

Figures from laboratory reports is at a level which indicates the rise and moderately high incidence of influenza virus (Figure 2 and Table 3). In the week before Christmas, it reported profits from 1179 samples analyzed, while in the christmas week reported 882 samples analyzed for influenza virus. Among the samples examined these two weeks have been proven 415 influenza A and 101 influenza B.
137 of the last two weeks of influenza A viruses were A (H1) pdm09 and preliminary 4 were A (H3). The remaining 274 have not been subtypebestemt yet. While there are many laboratories that test for H1pdm09 subtype, only trying to come to NIPH tested for H3 subtype. Therefore H3 virus more underreported than H1pdm09 virus. Nevertheless, it seems clear that A (H1N1) virus pdm09 has increased the most in recent times, especially in eastern Norway. All 24 year subtypebestemte influenza A viruses from Hordaland and Sogn og Fjordane this season has been A (H3), it is clear geographical variation in the viral photo.
103 of 107 hitherto examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to the Yamagata group. So it is still too early to say what that might be winter dominant influenza virus.

Among the 13 samples sent from the beacon doctors in week 51 was found 7 A (H1N1) pdm09 (all from the eastern area), one A (H3N2) (from Ireland) and 3 influenza B virus from Oslo, Bergen and Trondheim Municipality ). This is a high percentage. Most positive samples were from Oslo and Østfold.

...
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:100641::1:5569:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-52

Re: Norway 2012-13 Lab Surveillance: Week 50-52

machine translated;

Influenza Surveillance 2012-13, Week 1
Published 09.01.2013, updated: 09/01/2013, 4:16 p.m.

Influenza surveillance shows that the incidence of influenza-like illness in Week 1 continued to increase throughout the country. The figures are now high, even for virusp?visninger. It was proven 921 influenza A and 216 influenza B.

Clinical monitoring


In the first week in January 2013 was 5.1% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). Activity is high in all regions, with slightly lower rates in the North Region. Figures include data up to and including Thursday 3 January. Reports from hospitals in eastern suggests a decreasing stress in the days after 3 January, but it is uncertain whether this will be reflected in flu activity. There will be local variations in how much flu is circulating, and the time when the top is seen. For the country as a whole, we continue to expect increased activity.



Figure 1 Proportion of patients to physician consultation was diagnosed with influenza. The figures for last week can be adjusted up or down in the next report.

Virological surveillance
Figures from laboratory reports is at a level which indicates rising and high prevalence of influenza virus (Figure 2 and Table 3). During the week of 1/2013, it reported earnings from the 3397 samples analyzed for influenza virus. Among these samples examined have been found 921 influenza A and 216 influenza B.
339 of influenza A viruses in week 1 is identified as A (H1) and preliminary pdm09 9 as A (H3). The remaining 573 have not been subtypebestemt. While there are many laboratories that test for H1pdm09 subtype, only trying to come to NIPH tested for H3 subtype. Therefore H3 virus more underreported than H1pdm09 virus. Nevertheless, it seems clear that A (H1N1) virus pdm09 has increased the most in recent times, especially in eastern and it's probably this virus dominates nationwide now. Almost every year subtypebestemte influenza A virus from Hordaland and Sogn og Fjordane this season has been A (H3), it is clear geographical variation in the viral photo.
103 of 107 hitherto examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to the Yamagata group. Among the 35 samples sent from the beacon doctors in Week 1, it was found 10 A (H1N1) pdm09, 6 A (H3N2) and 3 influenza B virus. This is a high percentage.
...

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-1

Re: Norway 2012-13 Lab Surveillance: Week 50-1

Influenza Surveillance 2012-13, week 2
Published 16.01.2013, updated: 16.01.2013, 17:31

Influenza surveillance shows that the incidence of influenza-like illness in Week 1 continued to increase in most regions with the exception of mid-Norway. The increase is, however, considerably lower than week 1 The numbers are still high, even for virusp?visninger. It was discovered in 1192 influenza A and 223 influenza B.

Clinical monitoring
In Week February 2013 was 5.7% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). Activity remains high in all regions, but the region Central had declining numbers. There will be local variations in how much flu is circulating, and the time when the top is seen.



Figure 1 Proportion of patients to physician consultation was diagnosed with influenza. The figures for last week can be adjusted up or down in the next report.

The Institute has the media got information about one death related to influenza, in addition to one death in a nursing home.

...
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:100916::1:5569:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-2; 2 fatalities

Re: Norway 2012-13 Lab Surveillance: Week 50-2; 2 fatalities

Swine flu claims another victim
January 17, 2013
A woman who was diagnosed with swine flu died earlier this week at the National Hospital in Oslo (Rikshospitalet). Her death was the third tied to swine flu in Norway in recent weeks, after an 11-year-old boy from Porsgrunn died in December and a man died over the weekend at the hospital in ?lesund.
A total of seven swine flu patients have been treated in the intensive care ward at Rikshospitalet during the current flu season and Akershus University Hospital in L?renskog has had 181 cases of swine flu alone. Doctors and nurses at the hospital have complained that they don?t have enough staffing to keep up with the influx of flu- and other other patients arriving in the emergency room.
...
http://www.newsinenglish.no/2013/01/17/swine-flu-claims-another-victim/

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-2; 3 fatalities

Re: Norway 2012-13 Lab Surveillance: Week 50-2; 3 fatalities

machine translated; Follow link for charts & tables.
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:101030::1:5569:1:::0:0

Influenza Surveillance 2012-13, Week 3
Published 23.01.2013, updated: 01/23/2013, 1:31 p.m.

Influenza surveillance shows that the incidence of influenza-like illness in week 3 was declining in all regions. Number virusp?visninger was also declining. It was proven 710 influenza A and 135 influenza B.

Clinical monitoring

In the first week in March 2013 was 3.9% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). The figures are declining in all regions. Probably we have seen the top of this year's flu outbreak, but the activity is still high / moderate, and local variations can be expected in the amount of influenza virus circulating.

Report from the specialist health
Public Health receives weekly reports from the health regions describing the capacity and the load on the health level. Majority report few or no intensive care patients with influenza infection, but some hospitals have more in-patients with influenza infection. There is also still high test activity for influenza by individual laboratories. Few fatalities have been reported. Emergency preparedness is low and the situation is satisfactory and as expected at this time of year.

Figures from laboratory reports week 3 is considerably lower than the previous week, but they are still at a level indicating a high incidence of influenza virus (Figure 2 and Table 3). In week 3/2013, it reported earnings from the 3394 samples analyzed for influenza virus. Among these samples examined have been found 710 influenza A and 135 influenza B, it is significantly lower than last week and could indicate that influenza peak is passed for this season. 343 of influenza A viruses in week 3 are identified as A (H1) and pdm09 currently no A (H3). The remaining 367 have not been subtypebestemt. While there are many laboratories that test for H1pdm09 subtype, only trying to come to NIPH tested for H3 subtype. Therefore H3 virus much more underreported than H1pdm09 virus. Nevertheless, it seems clear that A (H1N1) viruses predominate pdm09 nationwide now. 198 of 205 hitherto examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to the Yamagata group.

Influenza Vaccine
We recommend all the risk groups to take seasonal flu vaccine every year. Seasonal vaccine contains A/California/7/2009 (H1N1)-like virus, an A/Victoria/361/2011 (H3N2)-like virus; well as a B/Wisconsin/1/2010-liknende a virus. There are no changes in the recommendations on who should be vaccinated. Virus Findings so far this winter suggests that there is a good correlation between virus vaccine covers and circulating viruses. Vaccine is still available from the NIPH. For people in risk groups who are sick and have not been vaccinated in the anti-viral medication may be appropriate. These patients should consult a doctor to have this evaluated. Antiviral drugs should be started within 48 hours after symptoms start to take effect.

Surveillance of resistance to antiviral drugs
Influenza Reference Laboratory at FHI monitors the sensitivity of influenza viruses to current antiviral drugs. In particular, one has vigilance for possible resistance to oseltamivir (Tamiflu). During the period since the pandemic virus emerged, over eight hundred Norwegian virus were tested for oseltamivirresistens, and all have demonstrated susceptibility to the drug. Nor is resistance to zanamivir (Relenza ?).

In this season it has been tested 40 influenza A (H1N1) virus pdm09, none of which have been resistant to oseltamivir or zanamivir (see Table 1).

...

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-3; 3 fatalities

Re: Norway 2012-13 Lab Surveillance: Week 50-3; 3 fatalities

machine translated; Follow link for charts & tables.
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:101148::1:5569:1:::0:0

Influenza Surveillance 2012-13, Week 4
Published 30.01.2013, updated: 30/01/2013, 5:41 p.m.

Influenza surveillance shows that the incidence of influenza-like illness in week 4 continued to decline in most of the country. Number virusp?visninger were about the same as the week before and well below the peak in week 2 It was proven 828 influenza A and 182 influenza B.

...
Report from the specialist health
Health Authorities report that last week was still some hospitalized patients with proven influenza, and in some centers it is also flu patients in intensive care units. The majority has no access or however ICU patients with influenza. There are reports of a few deaths. All health regions report about green / normal emergency and normal operation.
...
Virological surveillance


The numbers of laboratory reports for week 4 remained at about the same level as the week before and clearly lower than week 2 Detection is still at a level indicating a high incidence of influenza virus (Figure 2 and Table 3). In week 4/2013, it reported earnings from the 2498 samples analyzed for influenza virus. Among these samples examined have been found 828 influenza A and 182 influenza B. 403 of influenza A viruses in week 3 are identified as A (H1) and preliminary pdm09 no A (H3). The remaining 425 have not been subtypebestemt. While there are many laboratories that test for H1pdm09 subtype, only trying to come to NIPH tested for H3 subtype. Therefore H3 virus much more underreported than H1pdm09-virus and H3-testing occurs more afterwards. Nevertheless, it seems clear that A (H1N1) viruses predominate pdm09 nationwide now. 223 of 233 hitherto examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to the Yamagata group.
...

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-4

Re: Norway 2012-13 Lab Surveillance: Week 50-4

machine translated; Follow link for charts & tables.
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:101241::1:5569:1:::0:0

Influenza Surveillance 2012-13, Week 5
Published 06.02.2013, updated: 02/06/2013, 6:08 p.m.

Influenza surveillance shows that the incidence of influenza-like illness in Week 5 was slightly lower than the week before, with the exception of the Western region. Number virusp?visninger were about the same level as the previous three weeks but well below the peak in week 2 It was proven 777 influenza A and 200 influenza B.

In the first week in May 2013 was 3.3% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). The numbers are somewhat declining in all regions except the Western. It circulates still a lot of influenza, and local variations can be expected in the amount of influenza virus circulating.



Figure 1 Proportion of patients to physician consultation was diagnosed with influenza. The figures for last week can be adjusted up or down in the next report.

Report from the specialist health
Public Health has this week received a report from Health West. It is reported there are still a few ICU patients with influenza infection. Last week FHI been notified two deaths from the rest of the country associated with influenza infection. Reports from health regions closing now.
...
The numbers of laboratory reports for Week 5 stayed at about the same level as the previous three weeks and clearly lower than week 2 Detection is still at a level indicating a high incidence of influenza virus (Figure 2 and Table 3). In week 5/2013, it reported earnings from the 2839 samples analyzed for influenza virus. Among these samples examined have been found 777 influenza A and 200 influenza B. 376 of influenza A viruses in Week 5 are identified as A (H1) and preliminary pdm09 2 A (H3). The remaining 399 have not been subtypebestemt. While there are many laboratories that test for H1pdm09 subtype, only trying to come to NIPH tested for H3 subtype. Therefore H3 virus much more underreported than H1pdm09-virus and H3-testing occurs more afterwards. Nevertheless, it seems clear that A (H1N1) viruses predominate pdm09 nationwide. 301 of 316 hitherto examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to the Yamagata group.
...

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-5

Re: Norway 2012-13 Lab Surveillance: Week 50-5

Influenza Surveillance 2012-13, Week 6
Published 13.02.2013, updated: 02/13/2013, 5:09 p.m.

Influenza surveillance shows that the incidence of influenza-like illness in week 6 for the country as a whole was at about the same level as before, but the Western region recorded an increase in activity. Number virusp?visninger were about the same level as the previous three weeks but well below the peak in week 2 There was a fall in the number of confirmed influenza A (from 763 to 628) and an increased number of influenza B (from 262 to 349).
...
In the first week in June 2013 was 3.3% of those who went to the doctor diagnosed "flu like illness" (ILI) (Figure 1 and Table 2), which is about the same as the week before. Western Region has again increased activity after a period of declining numbers. It circulates still a lot of influenza, and local variations can be expected in the amount of influenza virus circulating.

Figure 1 Proportion of patients to physician consultation was diagnosed with influenza. The figures for last week can be adjusted up or down in the next report.

...
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:101329::1:5569:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-6

Re: Norway 2012-13 Lab Surveillance: Week 50-6

Influenza Surveillance 2012-13, week 8
Published 27.02.2013, updated: 27.02.2013, 15:51

Influenza surveillance shows that the incidence of influenza-like illness in week 8 for the country as a whole fell slightly compared with the previous week. Number virusp?visninger has fallen slightly compared to the level in the previous five weeks and is well below the peak in week 2 While the number of influenza A is clearly declining, there has been an increase of influenza B in recent weeks and for the first time in this outbreak is influenza B now in the majority.

Clinical monitoring
In the first week in August 2013 was 2.5% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2), which is slightly below the previous week's figures. There are no reports of outbreaks in health care caused by influenza virus last week. Laboratories demonstrated a good deal of RS virus with a peak in December.
...
Preliminary laboratory reports for week 8 appear to show declining incidence of influenza A and an increasing tendency for influenza B may have peaked. This week, influenza B for the first time more numerous than influenza A. The detection is still at a level indicating significant occurrence of influenza virus (Figure 2 and Table 3). In week 8/2013, it reported earnings from 2009 samples analyzed for influenza virus. Among these samples examined have been found 265 influenza A and 332 influenza B. 124 of influenza A viruses in Week 8 is identified as A (H1) and preliminary pdm09 1 A (H3). The remaining 140 has not been subtypebestemt. While there are many laboratories that test for H1pdm09 subtype, only trying to come to NIPH tested for H3 subtype. Therefore H3 virus much more underreported than H1pdm09-virus and H3-testing occurs more afterwards. Yet it is clear that A (H1N1) viruses predominate pdm09 nationwide. 441 of 463 hitherto examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to this group.
...
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:101458::1:5569:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-6

Re: Norway 2012-13 Lab Surveillance: Week 50-6

Influenza Surveillance 2012-13, week 9
Published 06.03.2013, updated: 06/03/2013, 5:35 p.m.

Influenza surveillance shows that the incidence of influenza-like illness in week 9 for the country as a whole declined compared with the previous week. Number virusp?visninger is now far below the peak in week 2 While the number of influenza A is clearly declining, there has been an increase of influenza B in recent weeks and influenza B are in the majority.

Clinical monitoring
In the first week in September 2013 was 2.0% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2), which is a decrease compared to last week. There are no reports of outbreaks in health care caused by influenza virus in recent weeks.
...
Preliminary laboratory reports (17 of 18 laboratories have reported) for week 9 shows the declining incidence of influenza A and an increasing tendency for influenza B may have peaked. Influenza B is next week 8 more numerous than influenza A. The detection is still at a level indicating significant occurrence of influenza virus (Figure 2 and Table 3). In week 9/2013, it reported earnings from 2499 samples analyzed for influenza virus. Among these samples examined have been found 295 influenza A and 390 influenza B. 99 of influenza A viruses in Week 9 are identified as A (H1) and preliminary pdm09 1 A (H3). The remaining 195 have not been subtypebestemt. While there are many laboratories that test for H1pdm09 subtype, only trying to come to NIPH tested for H3 subtype. Therefore H3 virus much more underreported than H1pdm09-virus and H3-testing occurs more afterwards. Yet it is clear that A (H1N1) virus pdm09 has dominated the country. 468 of 490 hitherto examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to this group.
...
http://www.fhi.no/eway/default.aspx...0:0&MainLeft_5565=5544:101507::1:5569:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-6

Re: Norway 2012-13 Lab Surveillance: Week 50-6

Machine translated;

1013 - Influenza Surveillance 2012-13, week 10
Influenza surveillance shows that the incidence of influenza-like illness in week 10 continued to go down. Number virusp?visninger is now far below the peak in week 2 It is now influenza B which dominates. While the number of influenza A has been declining since the middle of January, we are now seeing the first signs of influenza B also is on the decline.

In the week in October 2013 was 1.7% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2), which is a decrease compared to last week. There are reports of an outbreak in health care caused by influenza virus in the past week.
...
http://www.fhi.no/eway/default.aspx...6121&Content_6507=6430:105355::0:6409:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-6

Re: Norway 2012-13 Lab Surveillance: Week 50-6

1113 - Influenza Surveillance 2012-13, week 11
Influenza surveillance shows that both the incidence of influenza-like illness and number virusp?visninger in week 11 continued to go down. It is now influenza B which dominates. The number of influenza A has been falling since mid-January, while influenza B first peaked in late February.

Clinical monitoring
In the first week in November 2013 was 1.4% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). The activity is now under outbreak threshold of 1.4% in several regions. There are no reports of outbreaks in health care caused by influenza virus in the past week.
...
http://www.fhi.no/eway/default.aspx...6121&Content_6507=6430:105518::0:6409:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-11

Re: Norway 2012-13 Lab Surveillance: Week 50-11

machine translated;

1213 - Influenza Surveillance 2012-13, Weeks 12 and 13
Influenza surveillance shows that the number virusp?visninger in week 13 continued to go down. We have not yet figures for week 13 for influenza-like illness. It is now influenza B which dominates. The number of influenza A has been falling since mid-January, while influenza B first passed the peak in late February.

Clinical monitoring
201 medical offices and clinics ("watchtower") spread across the country report every week how many of the patient who has been consultation with the diagnosis "influenza-like illness." This diagnosis will be based on typical flu symptoms and no laboratory diagnostics. The figures give an indication of the activity of influenza, but does not specify the exact number of influenza illness. The 201 doctoral, covering over 15% of the population. Surveillance of influenza-like illness runs from week 40 through week 20 in the spring.

In week 12 2013 was 1.2% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). The activity is now under outbreak threshold of 1.4% in several regions. There are no reports of outbreaks in health care caused by influenza virus in the past week.
...
http://www.fhi.no/eway/default.aspx...6121&Content_6507=6430:105636::0:6409:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-13

machine translated;

1413 - Influenza Surveillance 2012-13, week 14
Published 10.04.2013, updated: 10.04.2013, 15:39
Link / reference to this article: http://www.fhi.no/artikler/?id=105869
Influenza Surveillance shows levels of influenza-like illness and number virusp?visninger in week 14 continued to go down. It is now influenza B which dominates. The number of influenza A has been falling since mid-January, while influenza B first passed the peak in late February.

In week 14, 2013 was 1.0% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). The activity is now under outbreak threshold of 1.4% in all regions. There are no reports of outbreaks in health care caused by influenza virus in the past week.

...
http://www.fhi.no/eway/default.aspx...6121&Content_6507=6430:105869::0:6409:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-13

1513 - Influenza Surveillance 2012-13, week 15
Published 04/17/2013, Updated: 04/17/2013 16:07
Link / reference to this article: http://www.fhi.no/artikler/?id=106041
Influenza surveillance shows the level of influenza-like illness and number virusp?visninger at week 15 continued to go down. It is now influenza B dominate. The number of influenza A has been falling since mid-January, while influenza B first passed the peak in late February.
Clinical monitoring
...
At week 15, 2013 was 0.7% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). The activity is now [well below] 1.4% in all regions.
...
Preliminary laboratory reports (15 of 18 laboratories have reported) for week 15 suggests further decline in the incidence of both influenza A and B. The numbers in recent weeks is approximately halved compared to the week before Easter. Influenza B has since week 8 have been more numerous than influenza A. detections has now dropped to a level which indicates relatively low incidence of influenza virus (Figure 2 and Table 3). By week 15/2013, it reported earnings from 1396 samples analyzed for influenza virus. Among these samples examined have been found 55 influenza A and influenza B. 140 8 of influenza A viruses in week 14 is identified as A (H1) pdm09 and preliminary 1 as A (H3). The remaining 46 have not been subtypebestemt. While there are many laboratories that test for H1pdm09-subtype, only trying to come to Public Health tested for H3 subtype. Therefore H3 virus much more underreported than H1pdm09-virus and H3-testing occurs more afterwards. Nevertheless, it is clear that A (H1N1) virus pdm09-dominated nationwide during the main eruption. 710 (96%) of the 741 so far examined influenza B virus Yamagata group belongs. B virus in the winter flu vaccine also belongs to this group.
...
http://www.fhi.no/eway/default.aspx...6121&Content_6507=6430:106041::0:6409:1:::0:0

 

[Ronan Kelly]

Re: Norway 2012-13 Lab Surveillance: Week 50-13

1613 - Influenza Surveillance 2012-13, Week 16
Published 24.04.2013, updated: 24.04.2013 17:44
Link / reference to this article: http://www.fhi.no/artikler/?id=106154
Influenza surveillance shows that the level of influenza-like illness and number virusp?visninger at week 16 continued to go down. It is now influenza B dominate. The number of influenza A has been falling since mid-January, while influenza B first passed the peak in late February.
...
At week 16, 2013 was 0.6% of those who went to the doctor diagnosis of "influenza like illness" (ILI) (Figure 1 and Table 2). The activity is now erupting limit of 1.4% in all regions.
...
Preliminary laboratory reports (14 of 18 laboratories have reported) for week 16 suggests further decline in the incidence of both influenza A and B. Influenza B has since Week 8 have been more numerous than influenza A. detections are down to a level indicating a relatively low incidence influenza virus (Figure 2 and Table 3). By week 16/2013, it reported earnings from 1073 samples analyzed for influenza virus. Among these samples examined have been found 45 influenza A and 92 influenza B. 13 of influenza A viruses in week 14 is identified as A (H1) pdm09 and yet no one A (H3). The remaining 32 did not become subtypebestemt. While there are many laboratories that test for H1pdm09-subtype, only trying to come to Public Health tested for H3 subtype. Therefore H3 virus much more underreported than H1pdm09-virus and H3-testing occurs more afterwards. Nevertheless, it is clear that A (H1N1) virus pdm09-dominated nationwide during the main eruption. 773 (96%) of the 805 so far examined influenza B virus Yamagata group belongs. B virus in winter flu vaccine also belongs to this group.
...
http://www.fhi.no/eway/default.aspx...6121&Content_6507=6430:106154::0:6409:1:::0:0