Influenza activity in Ireland decreased during week 10 2013

March 21, 2013

Influenza activity in Ireland decreased during week 10 2013; however influenza associated hospitalisations and outbreaks continue to be reported.

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The sentinel GP influenza‐like illness (ILI) consultation rate was 34.7 per 100,000 population in week 10 2013, a slight decrease compared to the updated rate of 41.3 per 100,000 during week 9 2013.  ILI rates have now remained above the Irish baseline threshold (21.0 per 100,000 population) for 13 weeks this season. ILI age specific rates were highest in the 15‐64 year age group during week 10 2013. The proportion of influenza–related calls to GP Out‐of‐Hours services remained stable during week 10 2013.

Influenza positivity decreased during week 10 2013 to 21.5%, compared to 25.7% during the previous week. Twenty‐six influenza A(H3), 16 influenza A(H1)pdm09, 6 A (unsubtyped) and 24 influenza B positive specimens were reported from the NVRL for week 10 2013. The percentage positivity for influenza A (66.7%) was higher than for influenza B (33.3%). Seven acute respiratory outbreaks in residential care facilities/community hospitals were reported to HPSC during week 10 2013. Influenza activity remained substantial in week 9 2013 across Europe; however an increasing number of countries reported declining transmission.

 

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Influenza activity in Ireland stabilised during week 8 2013

March 2, 2013

Influenza activity in Ireland stabilised during week 8 2013, compared to the previous week, however influenza-associated hospitalisations and outbreaks continue to be reported. The sentinel GP influenza-like illness (ILI) consultation rate was 39.7 per 100,000 population in week 8 2013, remaining stable compared to the updated rate of 39.8 per 100,000 during week 7 2013. ILI rates are above the Irish baseline threshold (21.0 per 100,000 population). ILI age specific rates were highest in the 15-64 year age group during week 8 2013. The proportion of influenza–related calls to GP Out-of-Hours services decreased during week 8 2013, for the second consecutive week.  Influenza positivity was 27.4% during week 8 2013, compared to 26.8% during the previous week. Twenty-four influenza A(H3), 16 influenza A(H1)pdm09, 6 A (unsubtyped) and 31 influenza B, positive specimens were reported from the NVRL for week 8 2013. The percentage positivity for influenza A (59.7%) was higher than for influenza B (40.3%). Six acute respiratory outbreaks were reported to HPSC during week 8 2013.

Influenza activity remained significant in week 7 2013 across Europe; however an increasing number of countries reported declining influenza transmission.


Influenza activity in Ireland decreased during week 7 2013

February 25, 2013

Several indicators of influenza activity in Ireland decreased during week 7 2013, compared to the previous week, however influenza-associated hospitalisations and outbreaks continue to be reported.  The sentinel GP influenza-like illness (ILI) consultation rate was 40.9 per 100,000 population in week 7 2013, a decrease compared to the updated rate of 58.1 per 100,000 during week 6 2013. ILI rates are above the Irish baseline threshold (21.0 per 100,000 population). ILI age specific rates decreased in all age groups. The proportion of influenza–related calls to GP Out-of-Hours services decreased during week 7 2013, compared to the previous week.  Influenza positivity decreased to 18.8% during week 7 2013, compared to 33.8% during the previous week. Twenty-four influenza B, 12 influenza A(H3) and nine influenza A(H1)pdm09 positive specimens were reported from the NVRL for week 7 2013. During week 7 2013, both influenza A and B were co-circulating. To date this season, one confirmed influenza B-associated death was reported to HPSC (during week 5 2013). Four acute respiratory outbreaks were reported to HPSC during week 7 2013. Significant influenza activity continued across Europe in week 6 2013, despite having peaked in a few countries in earlier weeks.


Influenza activity in Ireland during week 48

December 8, 2012

All indicators of influenza activity in Ireland were at low levels during week 48 2012. The sentinel GP influenza-like illness (ILI) consultation rate was 6.6 per 100,000 population in week 48 2012, a slight decrease compared to the updated rate of 7.8 per 100,000 reported during week 47 2012. ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population). ILI rates remain at low levels in all age groups. Respiratory syncytial virus (RSV) positivity levels remained at high levels during week 48 2012, as expected for this time of year. During week 48 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza-associated deaths occurring during this period. No influenza/ILI outbreaks were reported to HPSC during week 48 2012.
There remains little evidence of sustained influenza virus transmission in Europe. Much of the clinical influenza activity reported in EU/EEA countries is probably due to other respiratory pathogens including RSV.


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