Scientists say new strain could spread easily from person to person Australian experts are concerned about the threat of a new type of drug-resistant pandemic flu that is circulating in the population at large. According to the BBC, swine flu strain has learned how to dodge the antiviral Tamiflu and, though rare, is emerging outside of hospitals.
Lead investigator Dr Aeron Hurt, from the World Health Organization Collaborating Centre for Reference and Research on Influenza in Melbourne, said: "The greatest concern is that these resistant viruses could spread globally, similar to that seen in 2008 when the former seasonal H1N1 virus developed oseltamivir resistance and spread worldwide in less than 12 months."
The team who have studied it say the virus is "fitter" than other drug-resistant strains and the world should be on alert for outbreaks.
UK experts say they have seen a handful of similar cases.
The UK's Health Protection Agency said it would be closely monitoring the situation.
The Australian investigators presented their findings at a meeting on major infectious diseases.
Despite the warning, experts at the Annual Scientific Meeting of the Australasian Society for Infectious Diseases heard how the 'H1N1pdm09' swine flu virus is still sensitive to another antiviral drug Relenza (zanamivir).
But Tamiflu (oseltamivir) is now powerless against the strain that has been found in people in the community rather than sick patients with serious underlying conditions and weak immune systems.
Vaccines can prevent infection occurring in the first place.
The new strain that they have been examining is emerging among people who have never been treated with Tamiflu, suggesting it is very good at spreading from person to person.