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Flu emergency

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Pubblicato il 15/01/2013Read time: 1 min

New York citizens are on the hunt for a pharmacy in order to get the last provisions of flu vaccines after the Governor Andrew Cuomo declared a public health emergency throughout the New York State. With more than 19,000 influenza cases – they were 4404 last year – the Big Apple is facing the worst flu season since at least 2009. As a consequences of Cuomo’s decision, pharmacists can now give the flu shot to patients as young as six months of age, while before they were not allowed to do that to anyone under 18 years old.

The flu alarm is not limited to New York: 47 out of 50 States of America are dealing with a particularly strong flu outbreak, with 7.3% of the deaths reported in the first week of the year that have been related to influenza infection. The main viral subtype of this year’s flu seems to be the H3N2, which has been associated with more severe seasons in the past.

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0052814

Autori: 
di Michele Bellone
Sezioni: 
News
Dossier: 
Pandemic
Indice: 
Global Health
Epidemiology
Infections
New York City
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Discovered a New Carbon-Carbon Chemical Bond

di Chiara D'Errico
Pubblicato il 16/10/2024

A group of researchers from Hokkaido University has provided the first experimental evidence of the existence of a new type of chemical bond: the single-electron covalent bond, theorized by Linus Pauling in 1931 but never verified until now. Using derivatives of hexaarylethane (HPE), the scientists were able to stabilize this unusual bond between two carbon atoms and study it with spectroscopic techniques and X-ray diffraction. This discovery opens new perspectives in understanding bond chemistry and could lead to the development of new materials with innovative applications.

In the cover image: study of the sigma bond with X-ray diffraction. Credits: Yusuke Ishigaki

Chemistry

After nearly a year of review, on September 25, a study was published in Nature that has sparked a lot of discussion, especially among chemists. A group of researchers from Hokkaido University synthesized a molecule that experimentally demonstrated the existence of a new type of chemical bond, something that does not happen very often.