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Ireland Influenza Surveillance 2015-2016

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  • #16
    Swine flu death toll increases to 20 this winter

    Eilish O'Regan T
    The official death toll from swine flu this winter has risen to 20, with doctors and hospitals continuing to report outbreaks of the illness.


    There have been 32 laboratory-confirmed deaths from the flu virus so far this winter, with most other patients dying from the B strain.
    However, the true number of flu-related deaths is believed to be much higher as not everyone that dies with a flu-like illness is tested. They are also often a result of complications secondary to the patient's main underlying illness.
    The flu is continuing to lead to hospitalisations and intensive care admissions, contributing to emergency-department overcrowding. It also contributed to higher than normal numbers dying in the first and last weeks of January.
    ...
    The official death toll from swine flu this winter has risen to 20, with doctors and hospitals continuing to report outbreaks of the illness.


    Influenza Surveillance in Ireland ? Weekly Report
    Influenza Week 8 2016 (22nd ? 28th February 2016)


    Summary
    Influenza activity in Ireland was at moderate levels during week 8 2016 (week ending February 28, 2016).
    Influenza A(H1)pdm09 is the predominant virus circulating. Reports of hospitalisations/ICU admissions
    associated with influenza and influenza outbreaks remain elevated. It is recommended that antivirals be
    considered for the treatment and prevention of influenza in high risk groups.

     Influenza-like illness (ILI): The sentinel GP influenza-like illness (ILI) consultation rate was 59.7 per 100,000
    population in week 8 2016, a decrease compared to the updated rate of 71.1 per 100,000 reported during
    week 7 2016.
    o ILI rates remained above the Irish baseline ILI threshold (18 per 100,000 population).
    o ILI age specific rates were highest in the 5-14 year age group.


     GP Out of Hours: The proportion of influenza?related calls to GP Out-of-Hours services decreased during
    week 8 2016, however remained elevated.

     National Virus Reference Laboratory (NVRL): Influenza positivity reported from the NVRL for all respiratory
    specimens (sentinel and non-sentinel) remained elevated at 32% during week 8 2016. Of 582 sentinel and
    non-sentinel specimens tested, 186 were influenza positive: 115 A(H1)pdm09, 9 A(H3), 5 A (not subtyped)
    and 57 B.
    o Influenza A(H1)pdm09 is the predominant virus circulating; co-circulating with influenza B.
    o Influenza A(H1)pdm09 positivity remains high, accounting for 62% of all flu positive specimens.
    o RSV activity remains at low levels.

     All influenza A(H1)pdm09 and A(H3) viruses characterised in Ireland this season, belong to genetic groups
    that are antigenically similar to the strains recommended for inclusion in the 2015/2016 trivalent
    influenza vaccines. Influenza B viruses characterised this season in Ireland, belong to the B/Victoria
    lineage, these viruses are not present in the 2015/2016 trivalent vaccine used in Ireland. Trivalent
    vaccines are the most widely used influenza vaccines in Europe.

     Respiratory admissions: Respiratory admissions reported from a network of sentinel hospitals decreased
    for the fifth consecutive week during week 8 2016.

     Hospitalisations: 1065 confirmed influenza hospitalised cases were notified to HPSC for the 2015/2016
    season to date: 566 were associated with influenza A(H1)pdm09, 4 with A(H3), 153 with A (not subtyped)
    and 342 with influenza B.

     Critical care admissions: 18 confirmed influenza cases admitted to critical care units were reported to
    HPSC since the last surveillance report, bringing the season total to 103 cases.

     Mortality: 32 confirmed influenza cases died and were reported to HPSC for the 2015/2016 season.

     Outbreaks: Three influenza outbreaks in community hospitals/residential care facilities were notified to
    HPSC during week 8 2016: one in HSE-E, one in HSE-NW and one in HSE-S.

     International: Overall, influenza activity remained widespread in Europe, with the majority of countries
    reporting decreasing trends. Influenza A(H1N1)pdm09 viruses predominated this season to date.
    ...
     Thirty-two confirmed influenza cases (20 associated with influenza A(H1)pdm09, five with influenza A- not subtyped and seven with influenza B) died and were reported to HPSC for the 2015/2016 season to
    date. The median age of confirmed influenza cases who died this season is 64 years.
     No excess all-cause mortality was reported in Ireland during week 8 2016. For the 2015/2016 season to
    date, excess all-cause mortality was reported during weeks 1 and 4 2016, after correcting GRO data for
    reporting delays with the standardised EuroMOMO algorithm. Please note these data are provisional
    due to the time delay in deaths? registration in Ireland.
    ...
    Twitter: @RonanKelly13
    The views expressed are mine alone and do not represent the views of my employer or any other person or organization.

    Comment


    • #17
      Mayo man dies from swine flu

      A man from the east Mayo region has died from the swine flu virus in the Mayo University Hospital, Castlebar. The HSE is encouraging people in the at-risk age groups to avail of the flu vaccine, as cases of swine flu have significantly increased in recent months.
      ?Deaths from swine flu are still very rare, but give cause for concern when they happen. Any virus can be dangerous, and the swine flu is contagious. We would encourage people to get the vaccinations at their local GPs,? said a GP in the south east Mayo region. ?It only takes a very short time to administer the vaccine,? he added.
      Swine flu is now a ?seasonal? virus that circulates worldwide. The H1N1 flu strain, which causes the virus, has been included in the seasonal flu vaccine in Ireland since the 2010/11 influenza season.

      Comment


      • #18
        Number of swine flu deaths in winter season rises to 26

        Six more people died from swine flu in the first week of March, bringing the 2015/2016 seasonal total to 26.
        Overall, 38 people have died from various strains of influenza. The six deaths recorded between February 29th and March 6th were all associated with the H1N1 strain, also known as swine flu.
        There has been a downward trend in weekly flu detection rates, which stood at 42.9 per 100,000 population on March 6th compared to 60.8 the previous week. These figures are substantially above the national baseline figure of 18 per 100,000 which indicates the flu season is ongoing.
        Latest figures from the Health Protection Surveillance Centre (HPSC) show there have been 1,258 confirmed cases of hospitalisation caused by influenza during the 2015/2016 season, with swine flu accounting for the highest number of these.


        Comment


        • #19
          Influenza Surveillance in Ireland – Weekly Report
          Influenza Week 9 2016 (29th February – 6th March 2016)
          http://www.hpsc.ie/A-Z/Respiratory/I...e,15593,en.pdf

          Summary
          Influenza activity in Ireland decreased significantly during week 9 2016 (week ending March 6, 2016).
          Influenza A(H1)pdm09 is the predominant virus circulating. Reports of hospitalisations/ICU admissions
          associated with influenza and influenza outbreaks continue to be reported. It is recommended that
          antivirals be considered for the treatment and prevention of influenza in high risk groups.


           Influenza-like illness (ILI): The sentinel GP influenza-like illness (ILI) consultation rate was 42.9 per 100,000
          population in week 9 2016, a decrease compared to the updated rate of 60.8 per 100,000 reported during
          week 8 2016.
          o ILI rates remained above the Irish baseline ILI threshold (18 per 100,000 population).
          o ILI age specific rates decreased in the 0-4, 5-14 and 15-64 year age groups and increased slightly
          in those aged 65 years and older during week 9 2016, compared to the previous week.

           GP Out of Hours: The proportion of influenza–related calls to GP Out-of-Hours services decreased further
          during week 9 2016.

           National Virus Reference Laboratory (NVRL): Influenza positivity reported from the NVRL for all respiratory
          specimens (sentinel and non-sentinel) decreased to 22% during week 9 2016. Of 503 sentinel and non- sentinel specimens tested, 111 were influenza positive: 71 A(H1)pdm09, 2 A (H3), 2 A (not subtyped) and 36 B.
          o Influenza A(H1)pdm09 is the predominant virus circulating; co-circulating with influenza B.
          o Positive detections of influenza A(H1)pdm09 and influenza B decreased significantly during week
          9 2016, compared to the previous week.
          o RSV activity remains at low levels.

           All influenza A(H1)pdm09 and A(H3) viruses characterised in Ireland this season, belong to genetic groups
          that are antigenically similar to the strains recommended for inclusion in the 2015/2016 trivalent
          influenza vaccines. Influenza B viruses characterised this season in Ireland, belong to the B/Victoria
          lineage, these viruses are not present in the 2015/2016 trivalent vaccine used in Ireland. Trivalent
          vaccines are the most widely used influenza vaccines in Europe.

           Respiratory admissions: Respiratory admissions reported from a network of sentinel hospitals increased
          slightly during week 9 2016, compared to the previous week.

           Hospitalisations: 1258 confirmed influenza hospitalised cases were notified to HPSC for the 2015/2016
          season to date: 671 were associated with influenza A(H1)pdm09, 5 with A(H3), 170 with A (not subtyped)
          and 412 with influenza B.

           Critical care admissions: Seven confirmed influenza cases admitted to critical care units were reported to
          HPSC since the last surveillance report, bringing the season total to 110 cases.

           Mortality: 38 confirmed influenza cases died and were reported to HPSC for the 2015/2016 season.

           Outbreaks: Five acute respiratory/influenza outbreaks were notified to HPSC during week 9 2016.

           International: Overall, influenza activity remained widespread in Europe, with the majority of countries
          reporting decreasing trends. Influenza A(H1N1)pdm09 viruses predominated this season to date.
          ...
           Thirty-eight confirmed influenza cases (26 associated with influenza A(H1)pdm09, five with influenza A- not subtyped and seven with influenza B) died and were reported to HPSC for the 2015/2016 season to
          date. The median age of confirmed influenza cases who died this season is 64 years.

           No excess all-cause mortality was reported in Ireland during week 9 2016. For the 2015/2016 season to
          date, excess all-cause mortality was reported during weeks 1 and 4 2016, after correcting GRO data for
          reporting delays with the standardised EuroMOMO algorithm. Please note these data are provisional
          due to the time delay in deaths’ registration in Ireland.
          ...
          Twitter: @RonanKelly13
          The views expressed are mine alone and do not represent the views of my employer or any other person or organization.

          Comment


          • #20
            Influenza Week 10 2016 (7th ? 13th March 2016)


            Summary
            Influenza activity in Ireland continued to decrease during week 10 2016 (week ending March 13, 2016).
            Influenza A(H1)pdm09 is the predominant virus circulating. Reports of hospitalisations/ICU admissions
            associated with influenza and influenza outbreaks continue to be reported. It is recommended that
            antivirals be considered for the treatment and prevention of influenza in high risk groups.

             Influenza-like illness (ILI): The sentinel GP influenza-like illness (ILI) consultation rate was 29.2 per 100,000
            population in week 10 2016, a decrease compared to the updated rate of 40.7 per 100,000 reported
            during week 9 2016.
            o ILI rates remained above the Irish baseline ILI threshold (18 per 100,000 population).
            o ILI age specific rates remained stable in the 0-4 year age group and decreased in all other age
            groups.

             GP Out of Hours: The proportion of influenza?related calls to GP Out-of-Hours services decreased further.

             National Virus Reference Laboratory (NVRL): Influenza positivity reported from the NVRL for all respiratory
            specimens (sentinel and non-sentinel) remained stable at 25% during week 10 2016. Of 486 sentinel and
            non-sentinel specimens tested, 121 were influenza positive: 85 A(H1)pdm09, 2 A(H3), 4 A (not subtyped)
            and 30 B.
            o Influenza A(H1)pdm09 is the predominant virus circulating; co-circulating with influenza B. Overall, positive detections of influenza A(H1)pdm09 and influenza B have decreased each week
            for four consecutive weeks.
            o Sporadic detections of RSV, adenovirus and human metapneumovirus were reported during week
            10 2016. RSV activity remains at low levels.

             All influenza A(H1)pdm09 and A(H3) viruses characterised in Ireland this season, belong to genetic groups
            that are antigenically similar to the strains recommended for inclusion in the 2015/2016 trivalent
            influenza vaccines. Influenza B viruses characterised this season in Ireland, belong to the B/Victoria
            lineage, these viruses are not present in the 2015/2016 trivalent vaccine used in Ireland. Trivalent
            vaccines are the most widely used influenza vaccines in Europe.

             Hospitalisations: 1393 confirmed influenza hospitalised cases were notified to HPSC for the 2015/2016
            season to date: 738 were associated with influenza A(H1)pdm09, 6 with A(H3), 194 with A (not subtyped)
            and 455 with influenza B.

             Critical care admissions: One confirmed influenza case admitted to a critical care unit was reported to
            HPSC since the last surveillance report, bringing the season total to 111 cases.

             Mortality: 40 confirmed influenza cases died and were reported to HPSC for the 2015/2016 season.

             Outbreaks: Four acute respiratory/influenza outbreaks were notified to HPSC during week 10 2016.

             International: Overall, influenza activity remained widespread in Europe, with the majority of countries
            reporting decreasing trends.
            ...
             Forty confirmed influenza cases (26 associated with influenza A(H1)pdm09, seven with influenza A-not
            subtyped and seven with influenza B) died and were reported to HPSC for the 2015/2016 season to date.
            The median age of confirmed influenza cases who died this season is 64 years.

             No excess all-cause mortality was reported in Ireland during week 10 2016. For the 2015/2016 season to
            date, excess all-cause mortality was reported during weeks 1, 3 and 4 2016, after correcting GRO data for
            reporting delays with the standardised EuroMOMO algorithm. Please note these data are provisional
            due to the time delay in deaths? registration in Ireland.
            ...
            Twitter: @RonanKelly13
            The views expressed are mine alone and do not represent the views of my employer or any other person or organization.

            Comment


            • #21
              Influenza Surveillance in Ireland ? Weekly Report
              Influenza Week 11 2016 (14th ? 20th March 2016)


              Summary
              Influenza activity in Ireland decreased significantly during week 11 2016 (week ending March 20, 2016).
              Reports of hospitalisations/ICU admissions associated with influenza continue to be reported. Influenza
              A(H1)pdm09 is the predominant virus circulating, co-circulating with influenza B.

               Influenza-like illness (ILI): The sentinel GP influenza-like illness (ILI) consultation rate was 16.9 per 100,000
              population in week 11 2016, a decrease compared to the updated rate of 29.5 per 100,000 reported
              during week 9 2016.
              o ILI rates are now below the Irish baseline ILI threshold (18 per 100,000 population), following 10
              weeks above baseline.
              o ILI age specific rates decreased in all age groups during week 11 2016.

               GP Out of Hours: The proportion of influenza?related calls to GP Out-of-Hours services remained stable.

               National Virus Reference Laboratory (NVRL): Influenza positivity reported from the NVRL for all respiratory
              specimens (sentinel and non-sentinel) decreased to 20% during week 11 2016. Of 366 sentinel and non- sentinel specimens tested, 72 were influenza positive: 43 A(H1)pdm09, 3 A(H3), 1 A (not subtyped) and 25 B.
              o Influenza A(H1)pdm09 is the predominant virus circulating; co-circulating with influenza B. Overall, positive detections of influenza A(H1)pdm09 and influenza B have decreased each week
              for five consecutive weeks.
              o Sporadic detections of RSV, adenovirus, parainfluenza viruses and human metapneumovirus were
              reported during week 11 2016. RSV activity remains at low levels.

               All influenza A(H1)pdm09 and A(H3) viruses characterised in Ireland this season belong to genetic groups
              that are antigenically similar to the strains recommended for inclusion in the 2015/2016 trivalent
              influenza vaccines. Influenza B viruses characterised this season in Ireland belong to the B/Victoria
              lineage; these viruses are not present in the 2015/2016 trivalent vaccine used in Ireland. Trivalent
              vaccines are the most widely used influenza vaccines in Europe.

               Hospitalisations: 1510 confirmed influenza hospitalised cases were notified to HPSC for the 2015/2016
              season to date: 800 were associated with influenza A(H1)pdm09, 6 with A(H3), 221 with A (not subtyped)
              and 483 with influenza B.

               Critical care admissions: 14 confirmed influenza cases admitted to critical care units were reported to
              HPSC since the last surveillance report, bringing the season total to 125 cases.

               Mortality: 45 confirmed influenza cases died and were reported to HPSC for the 2015/2016 season.

               Outbreaks: Two acute respiratory/influenza outbreaks in HSE-E were notified to HPSC during week 11
              2016.

               International: In the European Region, influenza activity may have peaked for the 2015/2016 season.
              Influenza A(H1N1)pdm09 viruses have predominated this season in most countries, although in recent
              weeks there has been a shift towards influenza B circulation.
              ...
               Forty-five influenza cases died and were reported to HPSC for the 2015/2016 season to date: 29
              associated with influenza A(H1)pdm09, eight with influenza A-not subtyped, seven with influenza B and
              one possible influenza case. The median age of confirmed influenza cases who died this season is 64
              years.

               No excess all-cause mortality was reported in Ireland during week 11 2016. For the 2015/2016 season to
              date, excess all-cause mortality was reported during weeks 1, 3 and 4 2016, after correcting GRO data for
              reporting delays with the standardised EuroMOMO algorithm. Please note these data are provisional
              due to the time delay in deaths? registration in Ireland.
              ...
              Twitter: @RonanKelly13
              The views expressed are mine alone and do not represent the views of my employer or any other person or organization.

              Comment


              • #22
                Influenza Surveillance in Ireland ? Weekly Report
                Influenza Week 12 2016 (21st ? 27th March 2016)


                Summary
                Influenza activity in Ireland was at baseline levels during week 12 2016 (week ending March 27, 2016).
                Reports of hospitalisations/ICU admissions associated with influenza continue to be reported. Influenza
                A(H1)pdm09 and influenza B are co-circulating, with positivity continuing to decrease in recent weeks.

                 Influenza-like illness (ILI): The sentinel GP influenza-like illness (ILI) consultation rate was 20.2 per 100,000
                population in week 12 2016, a slight increase compared to the updated rate of 16.4 per 100,000 reported
                during week 11 2016.
                o During weeks 11 and 12 2016, ILI rates were fluctuating around the Irish baseline ILI threshold (18
                per 100,000 population).
                o ILI age specific rates were low in all age groups during week 12 2016.

                 GP Out of Hours: The proportion of influenza?related calls to GP Out-of-Hours services decreased during
                week 12 2016, compared to the previous week.

                 National Virus Reference Laboratory (NVRL): Influenza positivity reported from the NVRL for all respiratory
                specimens (sentinel and non-sentinel) decreased to 17% during week 12 2016. Of 278 sentinel and non- sentinel specimens tested, 48 were influenza positive: 24 A(H1)pdm09, 1 A(H3), 3 A (not subtyped) and 20 B.
                o Influenza A(H1)pdm09 and influenza B are currently co-circulating. Overall, positive detections of
                influenza A(H1)pdm09 and influenza B have decreased each week for six consecutive weeks.
                o Sporadic detections of RSV, adenovirus and human metapneumovirus were reported during week
                12 2016. RSV activity remains at low levels.

                 All influenza A(H1)pdm09 and A(H3) viruses characterised in Ireland this season belong to genetic groups
                that are antigenically similar to the strains recommended for inclusion in the 2015/2016 trivalent
                influenza vaccines. Influenza B viruses characterised this season in Ireland belong to the B/Victoria
                lineage; these viruses are not present in the 2015/2016 trivalent vaccine used in Ireland. Trivalent
                vaccines are the most widely used influenza vaccines in Europe.

                 Hospitalisations: 1603 confirmed influenza hospitalised cases were notified to HPSC for the 2015/2016
                season to date: 849 were associated with influenza A(H1)pdm09, 6 with A(H3), 228 with A (not subtyped)
                and 520 with influenza B.

                 Critical care admissions: Two confirmed influenza cases admitted to critical care units were reported to
                HPSC since the last surveillance report, bringing the season total to 127 cases.

                 Mortality: 46 notified influenza cases died and were reported to HPSC for the 2015/2016 season.

                 Outbreaks: No new acute respiratory/influenza outbreaks were notified to HPSC during week 12 2016.

                 International: In the European Region, influenza activity has peaked for the 2015/2016 season. Influenza
                A(H1N1)pdm09 viruses have predominated this season in most countries, although in recent weeks there
                has been a shift towards influenza B circulation.
                ...
                 Forty-six notified influenza cases died and were reported to HPSC for the 2015/2016 season to date: 30
                associated with influenza A(H1)pdm09, eight with influenza A-not subtyped, seven with influenza B and
                one possible influenza case. The median age of confirmed influenza cases who died this season is 64
                years.

                 No excess all-cause mortality was reported in Ireland during week 12 2016. For the 2015/2016 season to
                date, excess all-cause mortality was reported during weeks 1, 3 and 4 2016, after correcting GRO data for
                reporting delays with the standardised EuroMOMO algorithm. Please note these data are provisional
                due to the time delay in deaths? registration in Ireland.
                ...
                Twitter: @RonanKelly13
                The views expressed are mine alone and do not represent the views of my employer or any other person or organization.

                Comment


                • #23
                  Influenza Surveillance in Ireland ? Weekly Report
                  Influenza Week 13 2016 (28th March ? 3rd April 2016)


                  Summary
                  Influenza activity in Ireland was at low levels during week 13 2016 (week ending April 3, 2016). Reports of
                  hospitalisations associated with influenza continue to be reported; although at decreased levels. Influenza
                  A(H1)pdm09 and influenza B are co-circulating at low levels, with positivity continuing to decrease in
                  recent weeks.

                   Influenza-like illness (ILI): The sentinel GP influenza-like illness (ILI) consultation rate was 8.6 per 100,000
                  population in week 13 2016, a significant decrease compared to the updated rate of 17.7 per 100,000
                  reported during week 12 2016.
                  o The latest updated ILI rates for weeks 11 to 13 2016 were below the Irish baseline ILI threshold
                  (18 per 100,000 population), following 10 consecutive weeks above baseline levels.
                  o ILI age specific rates were low in all age groups during week 13 2016.

                   GP Out of Hours: The proportion of influenza?related calls to GP Out-of-Hours services continued to
                  decrease during week 13 2016.

                   National Virus Reference Laboratory (NVRL): Influenza positivity reported from the NVRL for all respiratory
                  specimens (sentinel and non-sentinel) decreased to 11% during week 13 2016. Of 283 sentinel and non- sentinel specimens tested, 31 were influenza positive: 14 A(H1)pdm09, 2 A (not subtyped) and 15 B.
                  o Influenza A(H1)pdm09 and influenza B are currently co-circulating at low levels.
                  o Sporadic detections of RSV, parainfluenza viruses, adenovirus and human metapneumovirus were
                  reported during week 13 2016. RSV activity remains at low levels.

                   All influenza A(H1)pdm09 and A(H3) viruses characterised in Ireland this season belong to genetic groups
                  that are antigenically similar to the strains recommended for inclusion in the 2015/2016 trivalent
                  influenza vaccines. Influenza B viruses characterised this season in Ireland belong to the B/Victoria
                  lineage; these viruses are not present in the 2015/2016 trivalent vaccine used in Ireland. Trivalent
                  vaccines are the most widely used influenza vaccines in Europe.

                   Hospitalisations: For the 2015/2016 season to date, 1677 confirmed influenza hospitalised cases were
                  notified to HPSC: 881 were associated with influenza A(H1)pdm09, 7 with A(H3), 244 with A (not
                  subtyped) and 545 with influenza B.

                   Critical care admissions: Twelve confirmed influenza cases admitted to critical care units were reported to
                  HPSC since the last surveillance report, bringing the season total to 139 cases. It should be noted that only
                  one new case was admitted to a critical care unit during week 13 2016.

                   Mortality: 54 notified influenza cases died and were reported to HPSC for the 2015/2016 season to date.

                   Outbreaks: One influenza B outbreak in HSE-S and two acute respiratory infection outbreaks (one in HSE-E
                  and one in HSE-NW) were notified to HPSC during the week ending April 3, 2016. All three outbreaks were
                  in community hospitals/residential care facilities.

                   International: In the European Region, most countries are reporting decreasing trends in influenza
                  activity. Influenza A(H1N1)pdm09 viruses have predominated this season in most countries, although in
                  recent weeks there has been a shift towards influenza B circulation.
                  ...
                   Fifty-four notified influenza cases died and were reported to HPSC for the 2015/2016 season to date: 38
                  associated with influenza A(H1)pdm09, eight with influenza A-not subtyped, seven with influenza B and
                  one possible influenza case. The median age of confirmed influenza cases who died this season is 64
                  years.

                   No excess all-cause mortality was reported in Ireland during week 13 2016. For the 2015/2016 season to
                  date, excess all-cause mortality was reported during weeks 1, 2, 3, 4 and 6 2016, after correcting GRO
                  data for reporting delays with the standardised EuroMOMO algorithm. Please note these data are
                  provisional due to the time delay in deaths? registration in Ireland.
                  ...
                  Twitter: @RonanKelly13
                  The views expressed are mine alone and do not represent the views of my employer or any other person or organization.

                  Comment


                  • #24
                    Influenza Surveillance in Ireland ? Weekly Report
                    Influenza Weeks 14 & 15 2016 (4th ? 17th April 2016)


                    Summary
                    Influenza activity in Ireland was at low levels during weeks 14 and 15 2016 (weeks ending April 10th and
                    17th
                    , 2016). Sporadic cases of influenza A(H1)pdm09 and influenza B continue to be reported in community
                    and hospital settings, at low and decreasing levels.

                     Influenza-like illness (ILI): The sentinel GP influenza-like illness (ILI) consultation rate was 7.4 per 100,000
                    population in week 15 2016, a slight decrease compared to the rate of 8.9 per 100,000 reported during
                    week 14 2016.
                    o ILI rates have remained below the Irish baseline ILI threshold (18 per 100,000 population), for five
                    consecutive weeks.
                    o ILI age specific rates were low in all age groups during weeks 14 and 15 2016.

                     GP Out of Hours: The proportion of influenza?related calls to GP Out-of-Hours services during weeks 14
                    and 15 2016, continued to decrease and was at low levels.

                     National Virus Reference Laboratory (NVRL): Influenza positivity reported from the NVRL for all respiratory
                    specimens (sentinel and non-sentinel) decreased to 15% during week 14 2016 and 8% during week 15
                    2016. Sporadic detections of influenza A(H1)pdm09 and influenza B continue to be detected at low levels.

                     Sporadic detections of RSV, parainfluenza viruses, adenovirus and human metapneumovirus were
                    reported during weeks 14 and 15 2016.

                     All influenza A(H1)pdm09 and A(H3) viruses characterised in Ireland this season belong to genetic groups
                    that are antigenically similar to the strains recommended for inclusion in the 2015/2016 trivalent
                    influenza vaccines. Influenza B viruses characterised this season in Ireland belong to the B/Victoria
                    lineage; these viruses are not present in the 2015/2016 trivalent vaccine used in Ireland. Trivalent
                    vaccines are the most widely used influenza vaccines in Europe.

                     Hospitalisations: For the 2015/2016 season to date, 1760 confirmed influenza hospitalised cases were
                    notified to HPSC: 922 were associated with influenza A(H1)pdm09, 7 with A(H3), 258 with A (not
                    subtyped) and 573 with influenza B.

                     Critical care admissions: The last reported confirmed influenza case admitted to a critical care unit was on
                    April 9th 2016. For the 2015/2016 season to date, 152 confirmed influenza cases (106 associated with
                    influenza A(H1)pdm09, one with A(H3), 19 with influenza A-not subtyped and 26 with influenza B) were
                    admitted to critical care units and reported to HPSC.

                     Mortality: 67 notified influenza cases died and were reported to HPSC for the 2015/2016 season to date.

                     Outbreaks: Four influenza A(H1)pdm09 outbreaks were reported during weeks 14 and 15 2016 (two in
                    HSE-MW, one in HSE-S and one in HSE-W). One outbreak was in an acute hospital setting and three were
                    in community hospitals/residential care facilities.

                     International: Influenza activity continued to decrease in the European Region, with most countries
                    reporting decreasing trends. Influenza A(H1N1)pdm09 viruses have predominated this season in most
                    countries, although in recent weeks there has been a shift towards influenza B circulation.
                    ...
                    Twitter: @RonanKelly13
                    The views expressed are mine alone and do not represent the views of my employer or any other person or organization.

                    Comment

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