How flu is spread

Pubblicato il 13/02/2013Read time: 1 min

Avoiding close contacts with infected people could not be enough as a defense against flu. This is the conclusion of a recent study by scientists at the Wake Forest School of Medicine, published on the Journal of Infectious Diseases. The swab specimens of 94 subjects, admitted to the hospital with influenza-like illness, have been analyzed and their medical history recorded, revealing that 61 of them were actually positive for flu. Researchers then collected air samples from each patient, looking for infectious particles. This allowed to discover that 26 of them released virus particles into the air, with 5 being highly infectious, emitting up to 32 times more virus than others. Patients who reported severe illness and major interference with daily life also emitted more influenza virus.
These results thus seem to question the conventional wisdom that flu is mainly spread through close contact with others and by touching contaminated surfaces.

http://jid.oxfordjournals.org/content/early/2013/01/29/infdis.jis773.abstract

Autori:

Sezioni:

Dossier:

Indice:

Influenza

prossimo articolo

The Log and the Speck: The True Causes of Wildfires and Floods

di Roberto Buizza

di Paolo Vineis

Pubblicato il 13/01/2025

The Parable of the Speck and the Log. Ottmar Ellinger the Younger

The wildfires in Los Angeles and other extreme events, as well as their media coverage, highlight how immediate causes often overshadow the real issue: climate change, which increases the intensity and frequency of catastrophic phenomena. Tackling this crisis requires urgent action to reduce greenhouse gas emissions using already available technologies and investments to strengthen territorial resilience. Only a combination of mitigation and adaptation can prevent irreversible damage, ensuring a sustainable future for the next generations.

In the image: The Parable of the Speck and the Log. Ottmar Ellinger the Younger

Environment

Even in the face of the vast Los Angeles wildfires—still ongoing—as in other recent circumstances, the media's attention is primarily focused on the most immediate and “proximal” causes: the malfunctioning of the power grid, insufficient water reserves, the unpreparedness of newly hired firefighters, and so on.