More than two dozen cases of H1N1 swine flu resistant to Roche Holding AG (ROG)’s Tamiflu pill were reported in Australia in the largest outbreak of the drug- evading influenza strain.
Viruses from 25 of 184 patients in the Newcastle area of eastern Australia infected with the pandemic germ had a genetic mutation that reduces the potency of Tamiflu, scientists said in a report distributed today by the International Society for Infectious Diseases’ ProMED-mail program.
The cases, first reported in May, raise concern that the resistant strain may spread, leaving doctors without their preferred treatment for influenza. GlaxoSmithKline Plc (GSK)’s Relenza drug is effective against the mutant strain, which is still found in the Newcastle area, according to the World Health Organization’s Collaborating Centre for Influenza in Melbourne.
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