A large team of researchers from the World Health Organization (WHO) and many other institutions performed a new analysis of serologic studies from 19 countries in order to estimate the infection rate of the 2009 H1N1 influenza during the first year of the pandemic. The study, published in Influenza and Other Respiratory Viruses, showed that about 24% of the population were infected with the H1N1 virus during the first wave of the pandemic. Of these infected, approximately 0.02% died.These results are slightly higher than the official estimates made by the US Centers for Disease Control and Prevention (CDC) in the period immediately following the outbreak of the virus, and confirm the age-related distribution of H1N1 incidence, with the children being the most affected when compared to the over 65. One of the possible limitations of the study, as highlighted by the authors themselves, is that the vaccine might had little impact on their results, due to conflicting results and low vaccine coverage in most countries.
An evaluation of 2009 pandemic infection rate
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The embarrassing Covid
There's a certain discomfort in having to talk about Covid-19 again, as demanded by the increase in cases that is also recorded in Italy. The reason, writes epidemiologist Stefania Salmaso, might perhaps be identified in the lack of a transparent process that allows understanding on what basis the health authority formulates recommendations, leading to reliance on pundits.
“An embarrassing Covid-19”: It could be the title of a short story by Calvino or a rhyme by Rodari, but it's what we're witnessing these days. The increasing frequency of SARS-CoV-2 infections in various areas of the world, including Italy, has forced mainstream media to address it again. However, it's often discussed with a sort of embarrassment and only for the sake of reporting. When discussing possible countermeasures, the discomfort becomes even more apparent.