http://www.smittskyddsinstitutet.se/pub ... 212--2010/Influenza Report, week 7 (15 / 2 - 21 / 2), 2010
Report on the current influenza situation
The new flu will be included in this autumn's flu vaccines
Influenza in Sweden
Influenza in the world
Fig 1. The number of reported cases of A (H1N1) and seasonal influenza from. week 20, 2006-2009
Table 1. County distribution of cases in Sweden
Fig 2. Age of cases reported A (H1N1)
Fig 3. Sentinel Reporting
Fig 4. Sentinel Samples
Number of notifications from sentinel reporting and sampling
Number of notifications of laboratory reports
New monitoring project
Statistics from other sources
Link Collection
Editorial
Editor: Sandra RUBINOV
Editor: Annika Linde
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Content
The new flu will be included in this autumn's flu vaccines
World Health Organization (WHO) experts have recently agreed on the composition of vaccine for next flu season (2010/2011) for the northern hemisphere. The new flu (also known as swine flu) should be included in the seasonal vaccine next year, together with influenza B and H3N2.
A new case of novel influenza has been notified to the Infectious Diseases Institute (SMI) in week seven from Stockholm County. In health care has been marked by an increase in patients with respiratory symptoms who are not flu related, it appears to be particularly RSV.
Published in the newsletter 2010-02-25
Influenza in Sweden
A new case of novel influenza has been notified by the Karolinska University Hospital in Solna in week seven. Since last spring, the 11 000 cases of novel influenza notified in accordance with Communicable Disease Act. A total of 1 449 people reported to hospital treatment because of the new flu, but continued after the reported cases, and likely the figure will rise further.
SMI has received calls from medical indications of increased influx of patients with respiratory tract infections in week seven. Even in Sjukvårdsrådgivningen 1177, the number of questions regarding cough and fever in children to raise. It probably reflects the increase in RSV activity during the past three weeks.
• Within the voluntary laboratory reporting a seasonal influenza type B been confirmed at Scania's University Hospital in Malmö.
• A total of seven cases of influenza B from Scania for reported and entered in the statistics for weeks five and six.
• In the sentinel sample was a patient with influenza B reported in week seven.
• In the sentinel surveillance, five patients sought care for their flu symptoms (ILS). Four of them visited the district clinics in Dalarna and in Västra Götaland. ILS proportion of all medical visits was 0.06 percent.
Influenza vaccine for next season
Strains similar to the following typstammar will be included in the influenza vaccine for the 2010-2011 unanimous decision at the WHO seven weeks:
-A/California/7/2009 (H1N1)
-A/Perth/16/2009 (H3N2)
-B/Brisbane/60/2008
The flu vaccine includes three strains of influenza. In order to produce influenza vaccine that provides optimal protection is determined, at two meetings per year, which strains to include in the southern and northern hemisphere vaccine for the coming season. At these meetings, we analyze where in the world and what flu variants circulating and which ones are expected to dominate in the coming season. Based on this scientific review determined since the vaccine strains to be used in the vaccine. Two of next season's vaccine strains have been replaced over the vaccine for 2008-2009. Seasonal Influenza A (H1N1) -A/Brisbane/59/2007 (H1N1) has been replaced by the new influensan-A/California/7/2009 (H1N1) and A/Brisbane/10/2007 (H3N2) has been changed to A / Perth/16/2009 (H3N2). Both of these strains are now used for the southern hemisphere influenza vaccine in 2010.
Influenza B strain is unchanged. There since the late 1980s, two different variants of influenza B, B/Yamagata/16/88 and B/Victoria/2/87. Vaccine strain belongs to the later version and it has dominated the past year.
The two tribes that they changed to match well with the flu strains circulating in Sweden. Seasonal Influenza A/H1N1 has slowed markedly over the world. In Sweden, we had the last domestic discovery for almost a year ago, and one case of a traveler from India during the summer of 2009. Contrast, circulating a part H3N2. During the summer, received the travel-related cases and in the autumn, a number of indigenous cases reported to SMI, but the activity has been lower than any season, we know since 1968. All A (H3N2), they are now circulating influenza B strains similar to vaccine strain.
Published in the newsletter 2010-02-25
Influenza in the world
During week six were influenza situation in the world in virtually unchanged from week five. Five countries in southeastern Europe and Russia had increased levels of respiratory infections, but according to experts at WHO, it is likely that they caused by other viral infections than the new flu. The new flu is still the dominant tribe among the circulating influenza strains in Europe but the percentage of positive tests has steadily declined from 45 percent week 45, 2009 to five percent for week six 2010th
In Asia, respiratory tract infections has increased in recent weeks, notably in North Korea. But in general was assessed influenza activity in Asia was unchanged by the WHO. Pandemic virus is still left in many countries. The strains circulating elsewhere on the two continents are A (H3N2) and B. In West Africa, however, the number of cases of novel influenza even slightly in week six.
The reason for SMI after reports from week six, the influenza reports from WHO and the European Center of Disease Prevention and Control (ECDC) for week seven will be published tomorrow, Friday.
Published in the newsletter 2010-02-25
Fig 1. The number of reported cases of A (H1N1) and seasonal influenza from. week 20, 2006-2009
The number of reported cases of A (H1N1) and seasonal influenza
Week 47 48 49 50 51 52 53 1 2 3 4 5 6 7
Percentage of positive samples (%) 41% 31% 16% 12% 6% 4% 2% 2% 1% 3.5% 0.9% 0.7% 1.8% 0.4%
Number of samples analyzed 5117 3360 1769 1067 505 468 353 309 302 269 236 278 274 235
Published in the newsletter 2010-02-25
Table 1. County distribution of cases in Sweden
Current week Total
Number of reported cases 1 11000
Including hospital care 1 1449 *
Including deaths 0 27
* Includes the latest updates to previous weeks.
Table 1. County distribution of reported cases County Number of cases Number per 100 000 inhabitants.
Blekinge 127 83.4
Dalarna 269 97.6
Gotland 40 70.2
Gävleborg 234 84.8
Halland 171 58.3
Jämtland 245 193.3
Jönköping 213 63.6
Kalmar 202 86.5
Kronoberg 168 92.3
Norrbotten 180 72.1
Skane 1274 105.0
Stockholm 3287 166.2
Södermanland 379 141.8
Uppsala 459 140.4
Värmland 362 132.2
Västerbotten 542 210.3
Västernorrland 342 140.5
Västmanland 150 60.0
Västra Götaland 1811 116.3
Örebro 331 119.3
Baltic island of Gotland 214 50.6
Sweden 11000 118.9
Published in the newsletter 2010-02-25
Fig 2. Age of cases reported A (H1N1)
Age of cases reported A (H1N1)
Published in the newsletter 2010-02-25
Fig 3. Sentinel Reporting
Notified cases of flu (ILS) symptoms 2006-2009
The graph shows the percentage (%) patients with clinical influenza-like symptoms (ILS) of the total number of patient visits.
Number of ILS / week
weeks 46 47 48 49 50 51 52 53 1 2 3 4 5 6 7
Number 177 137 98 45 28 10 7 2 6 14 4 9 10 6 5
Published in the newsletter 2010-02-25
Fig 4. Sentinel Samples
Analysis results (number of A, B and negative) for samples analyzed within the Swedish provtagningssentinelen.
Published in the newsletter 2010-02-25
Number of notifications from sentinel reporting and sampling
From week 40 we follow the WHO standards and uses the term A/pH1 for the new pandemic flu in the table.
Sentinel System Sentinel Samples ** Week 27/2009-7/2010
County Number of patients with ILS * % Of all patient -
visit
Total number of received samples Number of influenza A Number of influenza B Number A/pH1
cumulation
tively
Number A/H1
cumulation
tively
Number A/H3
cumulation
tively
Blekinge 0 (4) 0 0 (32) 0 (9) 0 (0) (8) (0) (0)
Dalarna 4 (144) 1.06 3 (262) 0 (26) 0 (0) (26) (0) (0)
Gotland - (6) 0 1 (130) 0 (6) 0 (0) (13) (0) (0)
Gävleborg 0 (28) 0 0 (0) 0 (0) 0 (0) (0) (0) (0)
Halland 0 (34) 0 0 (44) 0 (6) 0 (0) (6) (0) (1)
Jämtland 0 (22) 0 0 (57) 0 (9) 0 (0) (9) (0) (0)
Jönköping - (0) 0 0 (44) 0 (5) 0 (0) (5) (0) (0)
Kalmar 0 (58) 0 0 (19) 0 (2) 0 (0) (2) (0) (0)
Kronoberg 0 (15) 0 0 (26) 0 (3) 0 (0) (3) (0) (0)
Norrbotten 0 (27) 0 0 (53) 0 (21) 0 (0) (21) (0) (0)
Skane 0 (123) 0 0 (80) 0 (7) 0 (0) (7) (0) (0)
Stockholm 0 (149) 0 7 (785) 0 (190) 1 (1) (185) (0) (0)
Södermanland - (8) 0 0 (0) 0 (0) 0 (0) (0) (0) (0)
Uppsala 0 (72) 0 1 (163) 0 (23) 0 (0) (22) (0) (0)
Värmland 0 (16) 0 0 (0) 0 (0) 0 (0) (0) (0) (0)
Västerbotten 0 (132) 0 1 (288) 0 (109) 0 (0) (109) (0) (0)
Västernorrland 0 (19) 0 0 (113) 0 (47) 0 (0) (40) (0) (0)
Västmanland 0 (68) 0 0 (51) 0 (12) 0 (0) (12) (0) (0)
V. Götaland 1 (242) 0.03 0 (46) 0 (10) 0 (0) (10) (0) (0)
Örebro - (0) 0 0 (4) 0 (2) 0 (0) (2) (0) (0)
Östergötland 0 (29) 0 0 (0) 0 (0) 0 (0) (0) (0) (0)
Total 5 (1196) 0.06 13 (2197) 0 (487) 1 (1) (480) (0) (1)
* ILS: Flu-like symptoms
** Figures in parenthesis reports the total number of diagnoses for weeks 27 weeks, 2009.
Published in the newsletter 2010-02-25
Number of notifications of laboratory reports
A new table for laboratory reporting, which accounts for influenza cases reported since week 20, both the A (H1N1) and seasonal influenza A and B.
* Number of influenza diagnosis during the reporting week. The number in parentheses indicates cumulative cases from. weeks 20/2009
County
Lab
Number
A (H1N1) *
Number
Influenza
A *
Number
inlfuensa
B *
Total A (H1N1), A and B *
current week
Total A (H1N1), A and B
(from.vecka 20/2009)
Blekinge
Karlskr
0 (2)
0 (0)
0 (1)
(3)
Dalarna
Falun
0 (223)
0 (4)
0 (1)
(228)
Gotland
Visby
0 (0)
0 (0)
0 (0)
(0)
Gävleborg
Gävle
0 (207)
0 (4)
0 (0)
(211)
Halland
Straw
0 (166)
0 (13)
0 (2)
(181)
Jämtland
Östers **
0 (223)
0 (0)
0 (0)
(223)
Jönköping
Jonk
0 (209)
0 (0)
0 (1)
(210)
Kalmar
Kalm
0 (190)
0 (2)
0 (0)
(192)
Kronoberg
Växjö
0 (241)
0 (13)
0 (0)
(254)
Norrbotten
Luleå
0 (10)
0 (0)
0 (0)
(10)
Gällivare 0 (0)
0 (0)
0 (0)
(0)
Skane
Ore
0 (1318)
0 (3)
1 (8)
1 (1329)
Kristian
0 (0)
0 (0)
0 (0)
(0)
Lund 0 (0)
0 (0)
0 (0)
(0)
Helsing 0 (0)
0 (0)
0 (0)
(0)
Stockholm
Hudd
0 (981)
0 (20)
0 (5)
(1006)
Solna
1 (1771)
0 (20)
0 (14)
1 (1805)
SMI 0 (515)
0 (0)
0 (0)
(515)
Södermanland
Eskil *
0 (3)
0 (13)
0 (0)
(16)
Uppsala
Upps
0 (614)
0 (19)
0 (1)
(634)
Värmland
Charles
0 (355)
0 (1)
0 (1)
(357)
Västerbotten
Umeå
0 (596)
0 (15)
0 (9)
(620)
Västernorrland
Sund
0 (279)
0 (0)
0 (0)
(279)
Västmanland
West
0 (355)
0 (1)
0 (1)
(357)
V. Götaland
Götb
0 (1137)
0 (23)
0 (13)
(1173)
Cape
0 (1)
0 (0)
0 (0)
(1)
Skövde
0 (1198)
0 (7)
0 (0)
(1205)
Borås
0 (216)
0 (0)
0 (0)
(216)
Örebro
Örebr
0 (329)
0 (9)
0 (0)
(338)
Östergötland Link
0 (193)
0 (7)
0 (0)
(200)
Unknown 0 (22)
(0)
Total
Total
1 (11000)
0 (173)
1 (56)
2 (11229)
* Number of influenza diagnosis during the reporting week. The number in parentheses indicates cumulative cases from. weeks 20/2009
Published in the newsletter 2010-02-25
New monitoring project
Influenza surveillance based on anonymous search data from the site vardguiden.se.
When influenza A (H1N1) for the vast majority cause symptoms that do not require hospitalization, it is important to measure morbidity in those who did not seek medical attention. Each week presents the SMIs site graphs based on the previous week's searches.
Link to Web Search
Sickness Report
Sickness Report is a population-based surveillance of influenza morbidity in Stockholm County, where about 5500 Stockholm Report via Medical Rapports website or via voice mail when they become ill.
The link to the Hospital Rapports newsletter
The link to the article on the Hospital Report in news archive
Published in the newsletter 2010-02-25
Statistics from other sources
Flu Calls to 1177 Sjukvårdsrådgivningen
This presents Smittskyddsinstitutet statistics on the telephone on flu-related symptoms received by the county council's telephone service in 1177 Sjukvårdsrådgivningen. The statistics are based on the contact causes the nurses at the various Sjukvårdsrådgivning data are recorded. Only one contact may cause to call out. If a person describes a number of symptoms recorded the most pronounced symptom is that the main causal contact.
Seven contact causes which are attributable to influenza have been selected. These are shown in the figure below, from week 34, 2009.
Figure 5
The following counties are included in the statistics:
Gotland Municipality
Jämtland County Council
Blekinge County Council
Dalarna County Council
Gävleborg County Council
Halland County Council
Kronoberg County Council
Kalmar County Council
The County Council of Uppsala
County Council of Västmanland
Östergötland County Council
Region Skåne
Västra Götaland
Örebro County Council
More information about the 1177 Medical Care Information available at:
http://www.1177.seInfluenza Surveillance in the county councils
Influenza Surveillance in Norrbotten County Council
Influenza Surveillance in Halland
Influensaövervaknng in Gävleborg
Published in the newsletter 2010-02-25
Link Collection
Read more:
Gabrielle Holmgren: Asian flu (H2N2). SMI's report series 5:2009, 9 pages, year of publication 2009th
More information about the new flu
If you have questions about influenza A (H1N1), you can dial phone numbers on the Enlightenment: 020-20 20 00. Here you can also get a reference to where to turn for more information.
Although the SMI's website you can find current information about the new flu. Information on the website, we will update continuously, so that it is constantly present.
Reports page: a new influenza A (H1N1)
Compilation of information on the epidemiology and clinical symptoms
Disease Information on the new influenza A (H1N1)
Questions and answers about the new flu
Specific information to health professionals and laboratory
Preparedness for analysis of novel influenza A (H1N1)
External links:
National Board has revised two recommendations for the new influenza A (H1N1) and recommendations on vaccination.
Social Board's recommendations
WHO Situation updates - Influenza A (H1N1)
ECDC-Situation Report-Europe
CDC's pandemic preparedness around the new influenza A (H1N1) in the U.S.
Published in the newsletter 2010-02-25
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Updated 2010-02-25 13:50
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