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Influenza Surveillance Reports: Russia Week 1 - 15 2011

Ronan Kelly

Ronan Kelly

Retired 2020
Week ending Jan 2

Russia.gif

Exceeding of morbidity epidemic thresholds for overall population

grey - No data ; green- less 20%; orange- 20%; red- 49%


...

Influenza Virus Antigen Detection by Immunofluorescence Assay (IFA)
Clinical specimens from 1107 patients with ILI and ARI were investigated by IFA in 36 RBLs for detection of antigens of influenza viruses, parainfluenza, RSV and adenoviruses. A total of 51 (4.7%) influenza cases were diagnosed including:

- 2 (0.2%) influenza (H1N1+H1N1v) cases in 1 city,

- 13 (1.2%) influenza A(H3N2) cases in 4 cities,

- 36 (3.3%) influenza B cases in 13 cities.

Mid-value for IFA detection of influenza and other non-influenza respiratory viruses in the country was estimated as 25.0%, including non-influenza respiratory viruses as 20.3% accounting as 12.4%, 6.1% and 1.8% for parainfluenza, adeno- and RS-viruses, correspondingly (table 2).

...

Conclusion
During the week ending January 02.2011 the overall proportion of respiratory samples tested by virus isolation, IFA and rRT-PCR positive for influenza was estimated as 9.9%. A total of 8 influenza viruses were isolated including 2 pandemic A(H1N1)v viruses, 1 influenza A(H3N2) viruses, and 5 influenza B viruses. Epidemic thresholds of morbidity for separate cities were exceeded in 17 RBLs of 49 collaborating with WHO NIC in St.-Petersburg. Morbidity level in these cities was ranged from 0.4% to 1.7% of overall population.This week nationwide ILI and ARI registered morbidity level (53.7 per 10 000) was lower than the national baseline by 13.8% that can be explained by New Year holidays in Russia.

http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
Re: Influenza Surveillance Reports: Russia Week 1 - 2 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 2 2011

Week 3:
Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20%; red- 49%

Russia 3.webp

Week 4:
Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20%; red- 49%

Russia 4.webp

...


During the reported week (January 17 - 23.2011) investigations on influenza virus isolation were conducted in 22 Regional Base Laboratories (RBLs) participating in influenza surveillance in collaboration with two WHO NICs (St.-Petersburg, Moscow). As result of 412 clinical samples testing 15 (3.6%) pandemic A(H1N1)v influenza viruses were isolated in Astrakhan, Moscow, St.-Petersburg and Khabarovsk, 5 (1.2%) influenza A(H3N2) viruses were isolated in Vladivostok and 7 (1.7%) influenza B viruses were isolated in Voronezh, Murmansk, Novosibirsk, St.-Petersburg and Vladivostok (table 1).

...

Influenza and ARI morbidity data. During the week ending January 23.2011 epidemic thresholds of morbidity for overall population were exceeded in 19 of 59 cities. Morbidity level in these cities ranged from 0.6% to 1.9%.The nationwide registered ILI & ARI morbidity level (82.6 per 10 000) was higher than the national baseline by 32.6%. Morbidity level varied in 59 cities widely (from 0.2% to 1.9% of overall population of cities).

Etiology of ILI & ARI morbidity. The overall proportion of respiratory samples tested by virus isolation, IFA and rRT-PCR positive for influenza was estimated as 24.5%. Influenza A(H1N1)v and B viruses dominated in etiology of morbidity in Russia. According to sentinel surveillance data investigation of clinical samples from 55 SARI patients in 8 cities showed 23 influenza pandemic A(H1N1)v, 6 influenza B and 1 influenza А(H3N2) case.


http://www.influenza.spb.ru/en/infl..._russia/epidemic_situation/?year=2011&week=04
 
Re: Influenza Surveillance Reports: Russia Week 1 - 4 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 4 2011

Russia 3.webp
Week 5
Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20%; red- 49%

...

During the reported week (January 24 - 30.2011) investigations on influenza virus isolation were conducted in 22 Regional Base Laboratories (RBLs) participating in influenza surveillance in collaboration with two WHO NICs (St.-Petersburg, Moscow). As result of 505 clinical samples testing 18 (3.6%) pandemic A(H1N1)v influenza viruses were isolated in Kaliningrad, Moscow, St.-Petersburg and Khabarovsk, 4 (0.8%) influenza A(H3N2) viruses were isolated in Vladivostok and 32 (6.3%) influenza B viruses were isolated in Voronezh, Krasnodar, Moscow, Novosibirsk, St.-Petersburg and Vladivostok (table 1).

...

Influenza and ARI morbidity data. During the week ending January 30.2011 widespread influenza activity was registerd in Russia. Epidemic thresholds of morbidity for overall population specific for each city were exceeded in 35 cities. Morbidity level in these cities ranged from 0.5% to 2.5%.The nationwide ILI & ARI morbidity level registered this week (118.0 per 10 000) was higher than the national baseline by 89.4%.

Etiology of ILI & ARI morbidity. The overall proportion of respiratory samples tested positive for influenza by virus isolation, IFA and rRT-PCR was estimated as 36.1%. Influenza A(H1N1)v and B viruses dominated in etiology of morbidity in Russia. According to sentinel surveillance data investigation of clinical samples from 36 SARI patients in 9 cities showed 14 influenza pandemic A(H1N1)v cases, 1 influenza А(H3N2) and 10 influenza B cases.


http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
Re: Influenza Surveillance Reports: Russia Week 1 - 5 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 5 2011

Russia.gif

Week 6
Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20%; red- 49%

...

Influenza and ARI morbidity data. During the week ending February 06.2011 widespread influenza activity was registered in Russia. Epidemic thresholds of morbidity for overall population specific for each city were exceeded in 51 cities from 59 ones under surveillance. Morbidity level in four of these cities reached up 2.0 - 2.2%. The nationwide ILI & ARI morbidity level registered this week (142.7 per 10 000) was higher than the national baseline (62.3) by 129%.

...

During the reported week (January 31 - February 06.2011) investigations on influenza virus isolation were conducted in 24 Regional Base Laboratories (RBLs) participating in influenza surveillance in collaboration with two WHO NICs (St.-Petersburg, Moscow). As result of 742 clinical samples testing 15 (2.0%) pandemic A(H1N1)v influenza viruses were isolated in Astrakhan, Ekaterinburg, Kaliningrad, Moscow, St.-Petersburg and Vladivostok, 9 (1.2%) influenza A(H3N2) viruses were isolated in Vladivostok and Chelabinsk and 29 (3.9%) influenza B viruses were isolated in Astrakhan, Kaliningrad, Moscow,St.-Petersburg, Orenburg and Vladivostok (table 1).

...

Influenza and ARI morbidity data. During the week ending February 06.2011 widespread influenza activity was registered in Russia. Epidemic thresholds of morbidity for overall population specific for each city were exceeded in 51 cities from 59 ones under surveillance. Morbidity level in four of these cities reached up 2.0 - 2.2%. The nationwide ILI & ARI morbidity level registered this week (142.7 per 10 000) was higher than the national baseline (62.3) by 129%.

Etiology of ILI & ARI morbidity. The overall proportion of respiratory samples tested positive for influenza by virus isolation, IFA and rRT-PCR was estimated as 34.2%. Pandemic influenza A(H1N1)v and B viruses dominated in etiology of morbidity in Russia. According to sentinel surveillance data investigation of clinical samples from 36 SARI patients in 7 cities showed 14 influenza pandemic A(H1N1)v cases, 1 influenza А(H3N2) case and 5 influenza B cases.

Since week 40.2010, 43 influenza viruses were characterized antigenically: 27 were A(H1N1)v pandemic influenza virus A/California/07/09 like, 10 were influenza virus A(H3N2) A/Perth/16/09 like and 7 were influenza virus B/Brisban/60/08 like (B/Victoria/2/87 lineage).


http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
Re: Influenza Surveillance Reports: Russia Week 1 - 6 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 6 2011

Russia.gif

Week 7
Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20%; red- 49%

...

During the reported week (February 07 - 13.2011) investigations on influenza virus isolation were conducted in 25 Regional Base Laboratories (RBLs) participating in influenza surveillance in collaboration with two WHO NICs (St.-Petersburg, Moscow). As result of 635 clinical samples testing 50 (7.9%) pandemic A(H1N1)v influenza viruses were isolated in Kaliningrad, Moscow, St.-Petersburg, Tula, Vladimir, Orenburg, Yaroslavl and Vladivostok, 4 (0.6%) influenza A(H3N2) viruses were isolated in Vladivostok and St.-Petersburg and 43 (6.8%) influenza B viruses were isolated in Astrakhan, Voronezh, Kaliningrad, Moscow, Novosibirsk, St.-Petersburg, Orenburg and Vladivostok (table 1).

...

Influenza and ARI morbidity data. During the week 6 ending February 13.2011 widespread influenza activity was continued to be registered in Russia. Epidemic thresholds of morbidity for overall population (specific for each city) were exceeded in 45 cities from 59 ones under surveillance. Morbidity level in seven of these cities reached up 2.0% - 3.2%. The nationwide ILI & ARI morbidity level registered this week (129.2 per 10 000) was 2.1 times higher than the national baseline.

Etiology of ILI & ARI morbidity. The overall proportion of respiratory samples tested positive for influenza by virus isolation, IFA and rRT-PCR was estimated as 34.7%. Pandemic influenza A(H1N1)v and B viruses dominated in etiology of morbidity in Russia. According to sentinel surveillance data investigation of clinical samples from 49 SARI patients in 8 cities showed 17 influenza pandemic A(H1N1)v cases, 1 influenza А(H3N2) case and 6 influenza B cases.

Since week 40.2010, 77 influenza viruses were characterized antigenically: 56 were pandemic influenza A(H1N1)v virus A/California/07/09 like, 10 were influenza A(H3N2) virus A/Perth/16/09 like and 11 were influenza B/Brisban/60/08 virus like (B/Victoria/2/87 lineage). 3 influenza B viruses were characterized genetically at Research Institute of Influenza, all 3 belonged to clade B/Brisbane/60/2008 (B/Victoria/2/87 lineage).


http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
Re: Influenza Surveillance Reports: Russia Week 1 - 7 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 7 2011

Week 8

Influenza and ARI morbidity data
During the week 7 ending February 20.2011 widespread influenza activity was continued to be registered in Russia. Epidemic thresholds of morbidity for overall population (specific for each city) were exceeded in 30 cities from 59 ones under surveillance. Morbidity level in four of these cities reached up 2.0% - 3.2%. The nationwide ILI & ARI morbidity level registered this week (110.0 per 10 000) was 1.8 times higher than the national baseline. However it seams that peak of morbidity is passed.

Russia.gif

Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20-49%; red- 50% +


...

During the reported week (February 14 - 20.2011) investigations on influenza virus isolation were conducted in 25 Regional Base Laboratories (RBLs) participating in influenza surveillance in collaboration with two WHO NICs (St.-Petersburg, Moscow). As a result of 697 clinical samples testing 58 (8.3%) pandemic A(H1N1)v influenza viruses were isolated in Astrachan, Voronezh, Kaliningrad, Moscow, N. Novgorod, St.-Petersburg, Cheboksary and Vladivostok, 3 (0.4%) influenza A(H3N2) viruses were isolated in Vladivostok and 34 (4.9%) influenza B viruses were isolated in Astrakhan, Kaliningrad, Krasnodar, Moscow, Novosibirsk, Omsk, St.-Petersburg and Vladivostok (table 1).

...

Influenza and ARI morbidity data. During the week 7 ending February 20.2011 widespread influenza activity was continued to be registered in Russia. Epidemic thresholds of morbidity for overall population (specific for each city) were exceeded in 30 cities from 59 ones under surveillance. Morbidity level in four of these cities reached up 2.0% - 3.2%. The nationwide ILI & ARI morbidity level registered this week (110.0 per 10 000) was 1.8 times higher than the national baseline. However it seams that peak of morbidity is passed.

Etiology of ILI & ARI morbidity. The overall proportion of respiratory samples tested positive for influenza by virus isolation, IFA and rRT-PCR was estimated as 32.6%. Pandemic influenza A(H1N1)v and B viruses dominated in etiology of morbidity in Russia. According to sentinel surveillance data investigation of clinical samples from 47 SARI patients in 7 cities showed 17 influenza pandemic A(H1N1)v cases and 7 influenza B cases.

Since week 40.2010, 92 influenza viruses were characterized antigenically: 68 were pandemic influenza A(H1N1)v virus A/California/07/09 like, 10 were influenza A(H3N2) virus A/Perth/16/09 like and 14 were influenza B/Brisban/60/08 virus like (B/Victoria/2/87 lineage). 3 influenza B viruses were characterized genetically at Research Institute of Influenza, all 3 belonged to clade B/Brisbane/60/2008 (B/Victoria/2/87 lineage).


http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
Re: Influenza Surveillance Reports: Russia Week 1 - 8 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 8 2011

Week 9; Week 21.02.2011-27.02.2011

Influenza and ARI morbidity data
During the week 8 ending February 27.2011 widespread influenza activity continued to be registered in Russia. Epidemic thresholds of morbidity for overall population (specific for each city) were exceeded in 23 cities from 59 ones under surveillance. Morbidity level in three of these cities reached up 1.6% - 1.7% for overall population . The nationwide ILI & ARI morbidity level registered this week (85.4 per 10 000) was 1.4 times higher than the national baseline.

Russia.gif

Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20-49%; red- 50% +

...

During the reported week (February 21 - 27.2011) investigations on influenza virus isolation were conducted in 26 Regional Base Laboratories (RBLs) participating in influenza surveillance in collaboration with two WHO NICs (St.-Petersburg, Moscow). As a result of 681 clinical samples testing 59 (8.7%) pandemic A(H1N1)v influenza viruses were isolated in 11 cities located in different regions of Russia, 3 (0.4%) influenza A(H3N2) viruses were isolated in one Far East city and 32 (4.7%) influenza B viruses were isolated in 8 cities of European part of the country and Far East region (table 1).

...

Influenza and ARI morbidity data. During the week 8 ending February 27.2011 widespread influenza activity continued to be registered in Russia. Epidemic thresholds of morbidity for overall population (specific for each city) were exceeded in 23 cities from 59 ones under surveillance. Morbidity level in three of these cities reached up 1.6% - 1.7% for overall population . The nationwide ILI & ARI morbidity level registered this week (85.4 per 10 000) was 1.4 times higher than the national baseline.

Etiology of ILI & ARI morbidity. The overall proportion of respiratory samples tested positive for influenza by virus isolation, IFA and rRT-PCR was estimated as 33.0%. Pandemic influenza A(H1N1)v and B viruses dominated in etiology of morbidity in Russia. According to sentinel surveillance data investigation of clinical samples from 30 SARI patients in 8 cities showed 8 influenza pandemic A(H1N1)v cases and 3 influenza B cases.

Since week 40.2010, 139 influenza viruses were characterized antigenically: 101 were pandemic influenza A(H1N1)v virus A/California/07/09 like, 11 were influenza A(H3N2) virus A/Perth/16/09 like and 27 were influenza B/Brisban/60/08 virus like (B/Victoria/2/87 lineage). 3 influenza B viruses were characterized genetically at Research Institute of Influenza, all 3 belonged to clade B/Brisbane/60/2008 (B/Victoria/2/87 lineage).


http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
Re: Influenza Surveillance Reports: Russia Week 1 - 9 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 9 2011

Week 11:
Week 11.gif
Week 12:
Week 12.gif
Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20-49%; red- 50% +


Week 12; 14.03.2011-20.03.2011

Influenza and ARI morbidity data
During the week 11 ending March 20.2011 epidemic thresholds of morbidity for overall population (specific for each city) were exceeded in 4 cities from 59 ones under surveillance. Morbidity level in these cities reached up 0.9% - 1.1% for overall population. The nationwide ILI & ARI morbidity level registered this week (69.9 per 10 000) was above the national baseline by 12.2%.

...

Influenza Virus Isolation
During the reported week (March 14 - 20.2011) investigations on influenza virus isolation were conducted in 22 Regional Base Laboratories (RBLs) participating in influenza surveillance in collaboration with two WHO NICs (St.-Petersburg, Moscow). As a result of 625 clinical samples testing 35 (5.6%) pandemic A(H1N1)v influenza viruses were isolated in 7 cities located in different regions of Russia and 17 (2.7%) influenza B viruses were isolated in 5 cities located in European part of the country and Siberia (table 1).

...

http://www.influenza.spb.ru/en/infl..._russia/epidemic_situation/?year=2011&week=12
 
Re: Influenza Surveillance Reports: Russia Week 1 - 12 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 12 2011

Week 14:

Russia.gif

Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20-49%; red- 50% +


Week 28.03.2011-03.04.2011

Influenza and ARI morbidity data
During the week 13 ending April 03.2011 respiratory morbidity in Russia continued to decrease. Epidemic thresholds of morbidity for overall population (specific for each city) were exceeded only in 2 cities from 59 ones under surveillance. The nationwide ILI & ARI morbidity level registered this week (57.7 per 10 000) decreased below the national baseline by 7.4%.

...

http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
Re: Influenza Surveillance Reports: Russia Week 1 - 12 2011

Re: Influenza Surveillance Reports: Russia Week 1 - 12 2011

Week 15;

Russia.gif

Exceeding of morbidity epidemic thresholds for overall population
grey - No data ; green- less 20%; orange- 20-49%; red- 50% +


Week 04.04.2011-10.04.2011

Influenza and ARI morbidity data
During the week 14 ending April 10.2011 registration of acute respiratory morbidity cases in Russia continued to decrease. Epidemic thresholds of morbidity for overall population (specific for each city) were exceeded more than 50% only in one city (Veliky Novgorod) from 59 ones under surveillance. In two sities epidemic thresholds were exceeded moderately. The nationwide ILI & ARI morbidity level registered this week (54.6 per 10 000) decreased below the national baseline by 12.4%.

...

http://www.influenza.spb.ru/en/influenza_surveillance_system_in_russia/epidemic_situation/
 
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