(CIDRAP News) – Japanese researchers who identified antiviral-resistant strains of influenza B found that they seemed to circulate in communities and families and to make patients just as sick as their nonresistant counterparts did, contrary to a common assumption that resistant flu viruses are likely to be less transmissible and less virulent.
TORONTO (CIDRAP News) Scientists are uncovering naturally occurring resistance in influenza to the antiviral drugs that can prevent or treat it, potentially complicating plans by international authorities and many countries to build large drug stockpiles as a hedge against a pandemic.
(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) 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.
WASHINGTON, DC (CIDRAP News) Health officials worldwide are becoming increasingly concerned about influenza viruses' resistance to antiviral drugs, which can shut down a flu infection or mitigate symptoms. Flu antivirals are vital for reducing severe illness and death in average flu seasons and could be essential bulwarks against an influenza pandemic if one began.
(CIDRAP News) Increased resistance to oseltamivir (Tamiflu), the leading influenza drug, has prompted federal health officials to change their advice about flu treatment, saying clinicians for now should consider using zanamivir (Relenza) or a combination of two drugs for patients suspected of having influenza A.