(CIDRAP News) An early report on the seasonal influenza strains circulating in Europe reveals that some H1N1 viruses show signs of resistance to the antiviral drug oseltamivir, the European Centre for Disease Prevention and Control (ECDC) reported this week.
(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) 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) The World Health Organization (WHO) today reported evidence of a less-than-satisfactory match between all three components of this season's influenza vaccine and the flu strains currently making people sick.
(CIDRAP News) With influenza season well under way in the southern hemisphere, one of the three kinds of seasonal influenza virus is becoming increasingly resistant to the antiviral drug oseltamivir (Tamiflu), the World Health Organization (WHO) reported last week.
(CIDRAP News) Amid concern about rising resistance to oseltamivir (Tamiflu) in influenza A/H1N1 viruses, a Dutch team this week reported the death of a leukemia patient who was infected with an H1N1 virus that was resistant to the antiviral drug.
Editor's note: The second paragraph of this story was revised on Sep 24 to correct an error. On the basis of information from ProMED-mail (published by the International Society for Infectious Diseases), the original version said it was unusual for the southern hemisphere vaccine composition to be the same as the preceding northern hemisphere vaccine. A later ProMED-mail posting made clear that this is not unusual.
(CIDRAP News) A newly published analysis of oseltamivir-resistant influenza viruses collected last winter in Norway hints that they may increase an infected person's risk of pneumonia and sinus infections, but the small number of patients in the study means the finding is no more than a hint at this point.