China's state-run Xinhua news agency reported that the Guizhou Province's health bureau announced earlier this week that it had discovered two dozen Americans who had been within four rows of the suspected swine flu, or H1N1, case on the plane.

CNN: China releases U.S. school group quarantined over flu concerns

The use of the technology is spreading: a recent report funded by the UN Foundation and the Vodafone Foundation, two charities, documented more than four dozen projects across the developing world.

ECONOMIST: A doctor in your pocket

The uncertainty over regulatory and public reactions is one of the reasons why, over the past four years, at least two dozen firms working to create drugs from transgenic animals have gone bust.

ECONOMIST: REPORTS