The bird flu spreading through Asia has killed more than 40 people and has led to the slaughter of millions of animals. Now scientists say the flu virus appears able to spread from person-to-person, and they are watching anxiously for signs of a pandemic. An update on the fight against the flu, including plans to move flu medicine into the affected areas.
Klaus Stohr, project leader, WHO Global Influenza Programme, World Health Organization, Geneva, Switzerland
John Treanor, associate professor of medicine, and of microbiology and immunology, University of Rochester, School of Medicine and Dentistry
Arnold Monto, professor, epidemiology, School of Public Health, University of Michigan