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Influenza in Alberta 2013-2104 Season. Kim Simmonds, Manager Infectious Disease Epidemiology Alberta Health . 2012-2013 Year in Review.
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Influenza in Alberta2013-2104 Season Kim Simmonds, Manager Infectious Disease Epidemiology Alberta Health
2012-2013 Year in Review • The 2012/2013 influenza season in North America began earlier, peaked earlier, and was longer than other seasons since 2003, with the exception of the 2009 season. • The predominant strain was H3N2, with a late wave of Influenza B • Highest rate of cases elderly (80+), infants <1, and children 1 to 4. • Influenza Cases: • 28,933Albertanswere diagnosed with ILI • 2,871 laboratory confirmed • 964 hospitalized • 150 ICU • 37 deaths
H1N1 2013-2014 SeasonA timeline December 20: • Alberta Health is notified of the cases of severe influenza on ECMO (extracorporeal membrane oxygenation). • Cases of H1N1 are rapidly increasing December 23: • Mini-EOC opened at Alberta Health December 24: • Media reports the increase in number of H1N1 cases December 27: • Mass immunizations clinics opened January 10: • Mini-EOC closed at Alberta Health January 11: • Alberta Health Services announces vaccine is no longer available
Canada December 29 to January 4, 2014 (Week 1) No Activity Sporadic Activity Localized Activity Widespread Activity
Influenza by Zone • Rates are highest in North and Central Zones. • Rates of hospitalization are highest in the North, Edmonton & Central Zones
Outbreaks • There were fewer institutional outbreaks this year compared to last year. • 31 outbreaks in 2013/14 • 83 outbreaks in 2012/13 • More school and daycare outbreaks were seen this year compared to previous years.
2013-2014 Summary (so far) • The 2013/2043 influenza season had a sudden rise and fall in the rate of disease. • The predominant strain was H1N1 • Highest rate of cases infants <1, and children 1 to 4. • Adults had a higher rate of disease than previous years • Influenza Cases: • 23,173 Albertanswere diagnosed with ILI • 3,208 laboratory confirmed • 933 hospitalized • 158 ICU • 33 deaths
Questions?Kimberley.simmonds@gov.ab.ca780.422.1940 Thank you to Larry Svenson & Allison Scott