WASHINGTON (Reuters) - Researchers who mixed together bird flu and ordinary flu viruses created three extremely virulent new strains, a reminder that influenza viruses can swap genes to create dangerous offspring. Their experiment, reported in the Proceedings of the National Academy of Sciences, demonstrates that as H1N1 swine flu wanes, other forms of flu continue to circulate and could make surprise ...

The World Health Organisation's emergency committee of scientists has met Tuesday to decide whether the swine flu pandemic has passed its peak, a spokesman from the health agency confirmed. The step would mark the first formal recognition that the worst is over since the UN health agency declared a global pandemic in June and emergency precautions swung into action ...

GENEVA (Reuters) - Flu experts convened Tuesday to assess whether the H1N1 pandemic has peaked, the World Health Organization (WHO) said. Such a recommendation -- which is widely expected -- would signal infections are falling in most countries but fresh waves can still occur and health authorities should remain vigilant. The WHO, a United Nations agency, declared last June that the new virus ...