Terzo post di David Sifry sullo “Stato della blogosfera”. Il tema è l’influenza relativa dei big media e dei blog.
Sifry usa come metrica di influenza per un sito il numero di fonti diverse che contengono link ad esso. Nel mondo delle notizie online, in cima Sifry mette il NY Times (con circa 18.000 inbound sources) ed altri come CNN e BBC. Ma Slashdot e Boing Boing seguono abbastanza da vicino, e sono bene accompagnati nell’olimpo dei blog con più di 1.000 inbound sources.
Sifry osserva anche che molti dei circa 8.000 blog che hanno dalle 100 alle mille 1.000 inbound sources sono tra i più interessanti blog di approfondimento e/o specialistici.
Mmmh, un obbiettivo a cui puntare: almeno 100 inbound sources su Technorati!
12 April 2005
The Public Health Agency of Canada (PHAC) informed WHO on 26 March that an influenza A/H2N2 virus was identified by a local laboratory in Canada. The H2N2 virus identified was found to be similar to H2N2 viruses that circulated in humans in 1957-58 at the beginning of the so-called Asian influenza pandemic. The H2N2 virus which circulated at this time was fully transmissible among humans. It continued to circulate in humans and cause annual epidemics until 1968, when it vanished after the emergence of influenza A/H3N2 viruses that caused the next pandemic. Therefore, persons born after 1968 are expected to have no or only limited immunity to H2N2. H2N2 virus is not contained in current trivalent influenza vaccines.
Appropriate biosafety measures were immediately taken at the involved laboratory in Canada and respiratory surveillance measures initiated. Subsequent investigation by the Public Health Agency of Canada traced the source of the H2N2 virus to a panel of proficiency testing samples containing influenza A and influenza B viruses which the Canadian laboratory received from the College of American Pathologists (CAP) in February 2005. CAP routinely sends various panels of proficiency testing samples to participating laboratories every year. Normally, currently circulating influenza A viruses (H3N2; H1N1) are used for proficiency testing. The H2N2 virus was distributed by CAP for the first time in October 2004.