Louise Pelletier

TL;DR: This study analyzes data from 19 countries, comprising some 70,000 hospitalized patients with severe H1N1 infection, to reveal risk factors for severe pandemic influenza, which include chronic illness, cardiac disease, chronic respiratory disease, and diabetes.

TL;DR: This report presents prevalence and incidence national rates from the fiscal year 2008/2009 and national trends from 1998/1999 onwards and outlines sub-populations at higher risk, ways of reducing the risks of developing the disease and its complications, and estimates of related economic costs.

TL;DR: The population-based incidence of admission to hospital with laboratory-confirmed pandemic (H1N1) influenza was low in the first five months of the pandemic in Canada and the risk of a severe outcome was associated with the presence of one or more underlying medical conditions, age of 20 years or more and a delay in hospital admission.

TL;DR: This analysis casts doubt on the hypothesis that younger school-age children actually lead influenza epidemic waves, as slight age-specific differences in the timing of infection became apparent.

TL;DR: The epidemiologic features of the first and second waves of the 2009 pandemic differed; the second wave was substantially larger and, although the patients admitted to hospital were older and more of them had underlying conditions, a smaller proportion had a severe outcome.