(CIDRAP News) Flu activity is increasing in many of the Northern Hemisphere's temperate-zone countries, with influenza B cocirculating with the 2009 pandemic H1N1 virus across Europe and teaming up with influenza A (H3N2) in the United States and Canada, the World Health Organization (WHO) said in its latest update.
(CIDRAP News) A Pan American Health Organization (PAHO) official today rejected a media report that quoted her as saying that antiviral-resistant cases of novel H1N1 influenza had been found along the US-Mexican border.
(CIDRAP News) European health officials today reported signs of an increasing rate of resistance to oseltamivir (Tamiflu) in Europe's predominant subtype of influenza virus, but they cautioned that the rate seen in isolates tested so far may not reflect the real situation.
(CIDRAP News) European officials yesterday reported more evidence that one of the three types of seasonal influenza viruses is showing resistance to oseltamivir (Tamiflu) and said this represents the first clear sign that the resistant variant can spread.
(CIDRAP News) World health experts have been working under a general assumption that a feared reassortment between human and avian influenza virusesa scenario that could spark a pandemicmight only occur during a short winter interval, but researchers who recently examined virus circulation patterns warn that time frames for coinfection are wider and sometimes unpredictable.